Error dmg image is corrupted

Trying to recover the contents of a DMG which fails to mount with “Corrupt Image”

So about a week ago I used the disk Utility to make a few images of some folders in my MacBook pro as a backup (1 small with docs, one about 3GB with miscellaneous stuff and 1 about 96 GB full of photos, jpg and raw). After they were successful and mounted. I put them in an external SSD and formatted my Mac.

Today I try to get some of those into my newly formatted Mac and surprise, the two big images cannot be mounted because they are corrupted.

I attempted to use the Disk Utility to either analyse, convert or resize and it also complains about the image being corrupted.

• extracting DMG using 7Zip — not working
• converting it to another format like ISO — not converting
• opening DMG using Disk Drill — not opening
• opening DMG using Data Rescue — not opening

Is there any way to extract the data from the corrupted DMG file?

I believe there will be a way to breaking this dmg file because it still have 96 GB data, just not able to open it. Without using any recovery software will I be able to open this file. Help will be greatly appreciated.

Attaching screen shots.

MacBook Pro 13″, macOS 10.15

Posted on Jun 6, 2020 5:01 AM

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Are you using the same or newer version of macOS which created the .dmg files?

Make another copy of your corrupted .dmg file. You always want to work on a copy instead of the original in case you make a mistake and the problem gets worse. This way the original file remains untouched.

Then see if you can use TestDisk to access the copy of the .dmg file.

You may want to try using the Terminal command line utility «hdiutil» to manually attach the .dmg file. I haven’t used this utility enough to know the best way to utilize it for this situation. If «hditutil» works, then it may be possible to use Disk Utility or «diskutil» to try and repair the .dmg as long as it isn’t read-only.

Another option would be to try and open a copy of the .dmg file using Linux. You will need to convert the .dmg file to a standard .img file using the Linux utility «dmg2img» before attempting to access the resulting .img file using «losetup» and using «mount» to mount the volume.

The most expensive option would be to contact a professional data recovery service such as Drive Savers or Ontrack to see if they can access the corrupted .dmg files. Both vendors provide free estimates and both are recommended by Apple.

While I commend you for making sure to test the image files you need to do the testing after you move them to the final destination (I know this is easy to overlook). Also you should have regular & frequent and verified working system backups (at least two different backups are recommended).

Thanks for your response. my response below.

I’m using the same version of macOS. I’m not able to install TestDisk you’ve mentioned. Can you help me with that also with terminal command hditutil/hdiutil/diskutil I didn’t get these, can you explain me elaborately; as I’m a amateur.

Thank you in inadvance

I haven’t used the «hdiutil» or «diskutil» or other macOS specific commands very often and only in the most basic ways. This is not easy to describe because so much depends on the actual error messages you may receive. Plus I’m not real familiar with the macOS utilities so I would need to do a lot of research and experimentation to do more than provide the basics to get you started and point you in the right direction:

You use «hdiutil» to «attach» an image file so that macOS utilities can manipulate the image contents. Using the Terminal app type the following making sure to leave at least one space at the end of the line:

Now drag & drop your .dmg file from the Finder onto the Terminal window to auto-fill the correct path to your .dmg file. Then within the Terminal app press the «Return» key to execute the command. If successful you may try to mount it read only.

To try and mount the attached .dmg using the command line I think it is easiest to use «diskutil» since the «mount» command needs to be provided a lot more information.

or if you know the disk identifier for the attached .dmg file (replace the «diskXsY» with the correct drive identifier for your attached volume):

If the file system within the .dmg is damaged you may be able to run «fsck» on it to repair the file system contained in the .dmg file assuming it is a writable image. If it is not a writable image, then you need to convert it to a read+write image.

If the image is writable you can try repairing its file system using «fsck». If you can find the path or identifier for the attached .dmg file add it to the following command in place of «

Or use the disk identifier if known (again replacing «diskXsY» in the example):

Also «hdiutil attach» has a lot of options which may help you. You can review the command options of any command by typing «man » followed by the name of the command you want help with. For example to find out which options are available for «hdiutil» you would do this:

Use the arrow keys or the mouse/trackpad to scroll up & down. To exit the «man page» just press «q».

I don’t know if the paid app Disk Warrior would be able to work on a .dmg file or not. The image would need to be in a read+write format though.

Another option would be trying to using Linux and the Linux command line tools to access these .dmg files. It is possible they may be able to work around some minor issues. Linux typically is more forgiving when trying to open damaged items. I do know that the .dmg files will first need to be converted to a standard raw image format using the Linux utility «dmg2img». Then you would use «losetup» which is the Linux equivalent of «hdiutil» to access any partitions within the image before mounting it. Linux also has access to TestDisk.

I’ve only presented the very basics here. Basically a .dmg file is just a raw image file usually containing a file system whose contents are compressed. Except for being contained in a file you can almost think of it like an external drive if that helps. While I’ve done similar things on Linux a few times over the years it is not second nature to me yet and I will sometimes need to Google how to perform some of these steps myself. Just make sure to work from a copy of the .dmg file so you always have the original file in its original state. Also macOS can get stuck when attaching, detaching, mounting, and unmounting volumes and virtual volumes. Many times I will see the Finder showing volumes which I unmounted. If you see these phantom/ghost volumes, then you may find that you need to reboot the computer to get Finder and Disk Utility to act normal again.

If this is overwhelming and you don’t have the time which is perfectly understandable, then I suggest contacting a professional data recovery service and get an estimate. Unfortunately most technical computer users are not familiar with these procedures and trying to find good & accurate information on it for macOS is extremely difficult. There isn’t even a whole lot of information for doing this on Linux either.

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dmg image is corrupted #285

ERROR: dmg image is corrupted
Doesn’t matter what OS I try. I get dmg image corrupted. I’ve tried deleting and trying several times. no go.

The text was updated successfully, but these errors were encountered:

Same issue here.

i am seeing the same issue as well.

Apple appears to be aborting the downloads early. What you can do is modify one of the python scripts and to print the download URL before it actually downloads, then use a resume-capable tool like aria2 with relevant headers to download the BaseSystem.dmg

After getting the ERROR: dmg image is corrupted issue, I get the following now:

Seems like Apple aborts image downloads?

BTW, as a follow-up to @jf352’s comment If you want to see the URL being downloaded, add:

Right above # Set to stream mode for large files in tools/FetchMacOS/fetch-macos.py

The error shows up because the downloaded dmg file is incomplete. I was getting the same error, looks like apple is blocking the download or they must be having some issues. I tried with VPN and was able to download the dmg file in the third try.

1. VPN Australia -> fail
2. VPN USA -> fail
3. VPN Singapore -> pass

@jkopec Just restart your terminal and it will go away.

Also, I used https://github.com/kholia/OSX-KVM/blob/master/fetch-macOS.py to download the image, it shows the URL by default.

But, later I got stuck on installing OSX, getting the PKDownloadError error 8 . Which is another error related to network connection. (https://apple.stackexchange.com/questions/372785/pkdownloaderror-error-8-upon-catalina-update)

It now worked for me. I think maybe Cloudflare outage messed it up?

I tried it a few hours later yesterday and it worked even without a VPN. Could also successfully install macOS Catalina. Seems like a time related Apple network / Cloudflare issue to me. 🙂

Yeah, there were some Apple CDN issues (including application signing) earlier in the week. If it’s still ongoing please note it here, otherwise feel free to close the issue. Thanks!

Some issue with the CDN happened the same with me. I just let it redownload and it worked fine.

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Image data corrupted with 10.6.2 install.

When updating today, I got an error before the reboot during the installation. It downloaded the image, but that’s as far as it got. When I went to download the file directly from Apple, it finished, but when I mounted it, I got a window with the following:

The Following disk images couldn’t be opened
MacOSXUpd10.6.2.dmg image data corrupted

Curiously, the same thing is happening today with the updates to the Microsoft Office 2008 for Mac (12.2.3). The image is corrupted as well and it won’t install from the automatic installer.

This is frustrating. I’ve never had this sort of problem. I see that there are all sorts of issues with 10.6.2, but I cannot find anyone else that has the same problem I am having.

iMac 24″, Mac OS X (10.6.2)

Posted on Nov 19, 2009 7:14 PM

The most likely two cause of the corruption are:

1. Your OS has one or more damaged files used in the downloading or mounting of disk image files. Solution: reinstall the OS from the original DVD.

2. Your hard drive’s file system has corruption problems. Solution: use Disk Utility’s «repair disk» function to correct this.

Note that in either case, you will have to download any corrupted disk image files again, once the problem has been eliminated.

Try what R C-R says. If no joy, and you haven’t already tried it, then Do a repair install of Sno by installing Sno over Sno as in an upgrade install. Such an install, while usually very safe, still is an install so be appropriated backed up if you proceed. You will need to reinstall the 10.6.2 combo updater.

I would not do any sort of install unless I had an external drive with a bootable clone of my internal-drive boot volume on it. I think that there is enough risk in installing that such conservatism is warranted. I would not use time machine for an installation backup; I don’t trust it enough.

If you do not get a good install, then you can restore your internal back to where you started using the clone, and nothing will be lost. In doing a repair install, the clone is your data backup and fail-safe device. You can clone with Disk Utility, SuperDuper, or Carbon Copy Cloner. If you like the idea of cloning for a backup, etc., then I would acquire one of the last two mentioned programs.

To clone using Disk Utility (DU)

1. Start DU;
2. Make sure you external drive is partitioned GUID;
3. Choose Restore;
4. Drag your internal volume to the source box;
5. Drag your external partition to the destination box;
6. Choose Erase Destination; and
7. Click restore.

It will take an hour more or less. Once the clone is made, start up from it to make sure it is functional.

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Mac Data Recovery

One Stop Solution for Mac Data Recovery

Mac Image Data Corrupted Error : Get Corrupted Deleted Mac Data Recovered

Are you encountering Mac “image data corrupted” error while mounting the dmg file ? Dmg is disk image file of any software or application that needs to be mounted before installing in the Mac OS X. You can mount the drive in any Mac volume but on some occasions you can get the error message when the disk image is being mounted. You must be worried about the money you have spent on the software, you can try to get a fresh copy of the dmg file. If the Mac image data corrupted error is still showing then may be disk volume on which you are mounting the drive is corrupted. You can check for the issue with the help of disk utility and if it is not able to fix it then you have to format the drive which will certainly fix Mac image data corrupted error. But the data will also be deleted from the drive which you can get back from the time machine or any other backup. If the data is not recovered by this way use the Mac data recovery software to restore all the files after fixing Mac image data corrupted error. The recovery is very simple and effective, so you should download the software and use it.

An Introduction to Mac Image Data Corrupted Error

Although Mac OS X is quite reliable, but still it is not free from glitches. Sometimes, users also have to face Mac Image Data Corrupted Error issues unexpectedly. It is one issue that continues to bother irrespective of the Mac versions you might use. Eventually, as a result of it, Mac system fails to process all your request and may crash severely. What more, due to Mac Image Data Corrupted Error issue, users also have to face some difficulties while accessing their hard drive files and other installed apps, which really presses a panic button at times. Wait that’s not the end, it has also been reported that system’s processing speed might get slow and even terminate abruptly, which may result in total loss of saved data on Mac. If you are also in the same situation and looking for Mac Image Data Corrupted Error solution then you need not worry because you will find complete guide to fix Mac Image Data Corrupted Error issue.

Mac Image Data Corrupted Error: What are the Causes for Data Inaccessibility

There are various reasons behind the emergence of Mac Image Data Corrupted Error creating panic situation. Any inconsistencies pertaining to Mac OS X files system might result in corruption of data thus making it completely inaccessible. Let’s take a look at some of the probable reasons for the same.

Human mistakes: It might be due to unintentional mistakes such as accidental deletion, formatting mac files and volumes during normal course of operation

Emptying Trash: Many a time users might empty their trash files without cross checking them, which might result in complete wipe of even important Mac data.

Sudden termination of system files: Some time due to power surge, Mac system gets terminated abruptly, due to which some of the files fail to mount and become unresponsive.

Interrupted read/write operation: The chances of Mac file corruption or deletion also takes place when we interrupt the ongoing read/write process in midway resulting in Mac Image Data Corrupted Error situation.

Unintentional Formatting: Pressing wrong button will sometime lead to emergence of very critical Mac Image Data Corrupted Error problem.

Sharing of data/file on unsupported platforms: Due to presence of unsupported platform, sometimes shared files becomes unresponsive and get corrupted.

Virus attack: Although Mac is considered lot more safe as compared to Windows but still few nasty viruses are being written for it. Downloading apps & other related files will lead to security issue, which further influence the entire file system.

Modification in BIOS setting: Sometime when we go for some changes into the BIOS sector it will lead to emergence of several erroneous situation related to Mac Image Data Corrupted Error problem which you would never like to have.

Corruption in header file: Header file are one of the crucial file that contain entire information about the file that you are going to access. Hence, if there is a problem the requested file fails to respond and even generates Mac Image Data Corrupted Error corruption messages.

Catalog files node corruption: Catalog is the system generated file which keep record of file type and its recent accessing type.

Problem with boot sector: When there is a problem with boot sector, Mac system fails to load and as a result you are unable to access the stored data files and there arises Mac Image Data Corrupted Error issues.

Kernel Panic issues: Like BSOD in Windows, Mac users might come across kernel Panic issues.

Improper installation of program: installing of unwanted apps & programs without checking its source and agreement.

Hardware or software issue: It is also a common factor that is quite responsible for Mac file corruption and in a lieu emergence of erroneous situation.

All the above mentioned reasons are the probable causes for inaccessibility of Mac data. Now a question arises that, how a novice user know about Mac Image Data Corrupted Error ? Well, for your feasibility here are given some of the common symptoms.

• The system will get terminated automatically after few minutes of working.
• Slow & sluggish behavior of Mac system
• The stored Mac file gets corrupted or damaged without any warning
• Installed programs gets crashed or freezes frequently
• The emergence of annoying error messages like “unable to find .dmg file”
• “file not found”
• “access denied”

Precautions & Tips For Avoiding Mac Image Data Corrupted Error

There is a well known proverb that precaution is better than cure, this too is applicable in case of Mac data. In order to avoid Mac Image Data Corrupted Error situation and keep all Mac files safe and secure, following tips might prove to be helpful. So, let’s have a look.

Stop using Mac at once if you do not want to aggravate Mac Image Data Corrupted Error issue and go for inbuilt disk recovery option.

Never overwrite the free space created after deletion of Mac files.

Don’t restart the Mac as the deleted or corrupted data might get overwritten with some other file.

Do not switch off system by ejecting the power plug.

Avoid upgrading system files.

Do not share any new data after the deletion or corruption issue.

Search the Mac Trash files.

Avoid downloading software from untrustworthy or suspicious websites.

Always shutdown your PC properly.

Always keep your Mac system update with patches & security fixes to protect against software loopholes

Always have a proper & updated backup of your saved Mac files to overcome data loss and Mac Image Data Corrupted Error issue.

At this juncture it has been commonly seen that the majority of users may lose their hope and get indulged in some expensive procedure for Mac Image Data Corrupted Error issue. But, why to do so! If here available an effective solution for it.

Mac Image Data Corrupted Error: Manual Method to Get Rid of It

In case of Mac file corruption resulting in Mac Image Data Corrupted Error complications, follow this:

Search and launch “Disk Utility”

Click on “check file system”option

Wait till the scanning process gets over

Select the file that you want to mount it

2.If there is a problem with Mac file system due to Mac Image Data Corrupted Error then you may try this

Insert the Mac Bootable CD/Flash drive and restart the PC.

Click on “Install Mac OS X” option.

Continuously press “C” button from your keyboard.

Accept the license agreement & select the desired language.

Choose the destination drive which has the problem. In general, click on “Macintosh HD”.

After that click on “Options” icon to select the installation method. Further, if you want to save your personal file folders, networking accounts & user accounts click on “Archive to Install” & select “Preserve Users and Network Settings.

Restart your Mac system and reply to configuration prompt.

Note: Attempting to fix Mac Image Data Corrupted Error manually requires technical skills which newbie lacks. Even slight mistake might bring risk to data. So, it is recommended to take the help of Mac Data Recovery tool to rescue data in case of Mac Image Data Corrupted Error issue.

Mac Data Recovery Software: Automatic Way to Resolve Mac Image Data Corrupted Error Issue

No doubt, Mac data recovery software is an extremely simple and reliable tool that rescues data in case of its loss. It has also been noted that, the tool is quite effective in any case of data loss situation no irrespective of the reasons behind the corruption or deletion issues. Apart from that, its robust recovery algorithm performs thorough scanning of entire Mac hard drives either its internal or external and provide the users with optimum result.

Furthermore, Mac data recovery software has been well developed with layman prospective to provide simple working environment for the beginner users too. Another property of this very software is that, it can easily be installed and operate with minimal system resource utilization. In addition, due to all these effectiveness and meritorious work in the field of data recovery, the tool has gained 8 out of 10 rewards globally. Do not delay anymore, there is nothing as good as Mac data recovery software. Just download and install it to avoid Mac Image Data Corrupted Error scenario.

Striking Features of Mac Data Recovery Software

Undelete Mac data: Reliable and advance tool to perform smooth recovery of Mac data/files in any Mac Image Data Corrupted Error situation.

• Developed with robust scanning & recovery algorithm to provide complete Mac Image Data Corrupted Error solution.
• Highly applicable in case of Mac data corruption/ deletion issue

Deleted volume recovery: Also works effectively in case of Mac system file corruption or erroneous situation

Enabled with advance inbuilt file searching and recovery features in a single click

RAW file recovery: Supports recovery of more than 300 popular files including spreadsheets, ZIP archives, RAR files, PPT files ,PSD files, RAW files,music files, videos, etc.

Lost partition recovery: Safe data recovery from NTFS, FAT, ExFAT, HFS, HFSX based Boot Camp Partitions

Works as a system start up in case of boot failure issue

Maintains and preserves the integrity of data

Also, provide the preview of scanned & recovered files along with the option to see the ongoing scanning process during Mac Image Data Corrupted Error

Enable with resume recovery to later recovery of data from .dmg file format

saves recovered files at the user’s desired location

it is Cost effective

System Requirements for Mac data Recovery Software

• Processor: Intel
• Memory: 1GB
• Free Space on Hard Disk: 50 MB
• OS: OS X Mavericks 10.9, Mountain lion 10.8, Lion 10.7, Snow Leopard 10.6, Leopard 10.5, Tiger 10.4

Pros and Cons of the Software

• Very easy to use
• Highly reliable
• Scan and recover entire Mac hard drive data irrespective of circumstances
• best to overcome and fix Mac Image Data Corrupted Error

• Demo version can only be used to see the preview of recovered files.
• licensed version is required for saving the recovered data on desired location.

Conclusion: Now there is no need to worry at all! You can easily be able to rescue Mac data irrespective of the circumstances behind Mac Image Data Corrupted Error issue using an reliable and sophisticated Mac data recovery software.

Mac Image Data Corrupted Error: Users Guide to Operate Mac Data Recovery Software

Step 1: Download and install Mac data recovery software to resolve Mac Image Data Corrupted Error issue.

Step:2 click on ‘Quick Recovery’ which is located below of the tab ‘Drive Recovery’.

Step 3: Select the Mac volume to be recovered by clicking on either “Volume recovery” or “formatted recovery” option for best Mac Image Data Corrupted Error solution.

Step 4: Now, click on start scan button.

Step 5: Wait till the scanning process gets over, after that a list of scanned files are displayed.

Step 6: Choose the file/folder or volume to be repaired and then select the desired location to save all recovered data and thus fix Mac Image Data Corrupted Error problem.

Step:7 Progress bar will confirm the saving of selected files to the desired destination.

Источник

After getting the ERROR: dmg image is corrupted issue, I get the following now:

2020-07-21 10:24:21,173 Network Request: Fetching https://swscan.apple.com/content/catalogs/others/index-10.15-10.14-10.13-10.12-10.11-10.10-10.9-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog
2020-07-21 10:24:22,149 Network Request: Fetching http://swcdn.apple.com/content/downloads/41/23/061-26578-A_FF0C6M87LS/ylvl0phx6uy3i444qt9p57n8wz0xnylmd9/InstallAssistantAuto.smd
2020-07-21 10:24:22,197 Network Request: Fetching http://swcdn.apple.com/content/downloads/17/32/061-26589-A_8GJTCGY9PC/25fhcu905eta7wau7aoafu8rvdm7k1j4el/InstallAssistantAuto.smd
2020-07-21 10:24:22,209 Network Request: Fetching http://swcdn.apple.com/content/downloads/06/50/041-91758-A_M8T44LH2AW/b5r4og05fhbgatve4agwy4kgkzv07mdid9/InstallAssistantAuto.smd
2020-07-21 10:24:22,219 Network Request: Fetching http://swcdn.apple.com/content/downloads/34/54/041-88800-A_HLMBDM42FL/anrmoj880qkj0lbybqm0c3830p70nawjrv/InstallAssistantAuto.smd
2020-07-21 10:24:22,230 Network Request: Fetching http://swcdn.apple.com/content/downloads/08/44/041-90855-A_452WLVQACP/mzfvoi59bljh3w4w4lvwenfk0r1a2f7212/InstallAssistantAuto.smd
2020-07-21 10:24:22,239 Network Request: Fetching http://swcdn.apple.com/content/downloads/01/28/061-86291-A_JPEIWIOZES/enpozvvbmj3mj2dhulhevlt8b429qd5kw0/InstallAssistantAuto.smd
2020-07-21 10:24:22,254 Network Request: Fetching http://swcdn.apple.com/content/downloads/37/41/001-04366/a6boefh8b6bee4k2x6v5lwyfjr7od2ica3/InstallAssistantAuto.smd
2020-07-21 10:24:22,266 Network Request: Fetching http://swcdn.apple.com/content/downloads/59/18/001-15219-A_EE9FN7UHJA/efuz3h0zlmx4qlinf4bxlguigo9jvhcr55/InstallAssistantAuto.smd
2020-07-21 10:24:22,280 Network Request: Fetching http://swcdn.apple.com/content/downloads/41/56/061-94403-A_5AM6QB8TGK/ijdhki76d4rw19t579eblaqc26ngzlhu1p/InstallAssistantAuto.smd
2020-07-21 10:24:22,569 Selected macOS Product: 061-86291
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 665, in urlopen
    httplib_response = self._make_request(
  File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 421, in _make_request
    six.raise_from(e, None)
  File "<string>", line 3, in raise_from
  File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 416, in _make_request
    httplib_response = conn.getresponse()
  File "/usr/lib/python3.8/http/client.py", line 1332, in getresponse
    response.begin()
  File "/usr/lib/python3.8/http/client.py", line 303, in begin
    version, status, reason = self._read_status()
  File "/usr/lib/python3.8/http/client.py", line 272, in _read_status
    raise RemoteDisconnected("Remote end closed connection without"
http.client.RemoteDisconnected: Remote end closed connection without response

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/requests/adapters.py", line 439, in send
    resp = conn.urlopen(
  File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 719, in urlopen
    retries = retries.increment(
  File "/usr/lib/python3/dist-packages/urllib3/util/retry.py", line 400, in increment
    raise six.reraise(type(error), error, _stacktrace)
  File "/usr/lib/python3/dist-packages/six.py", line 702, in reraise
    raise value.with_traceback(tb)
  File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 665, in urlopen
    httplib_response = self._make_request(
  File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 421, in _make_request
    six.raise_from(e, None)
  File "<string>", line 3, in raise_from
  File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 416, in _make_request
    httplib_response = conn.getresponse()
  File "/usr/lib/python3.8/http/client.py", line 1332, in getresponse
    response.begin()
  File "/usr/lib/python3.8/http/client.py", line 303, in begin
    version, status, reason = self._read_status()
  File "/usr/lib/python3.8/http/client.py", line 272, in _read_status
    raise RemoteDisconnected("Remote end closed connection without"
urllib3.exceptions.ProtocolError: ('Connection aborted.', RemoteDisconnected('Remote end closed connection without response'))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "fetch-macos.py", line 165, in <module>
    fetchmacos()
  File "/root/.local/lib/python3.8/site-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/root/.local/lib/python3.8/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/root/.local/lib/python3.8/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/root/.local/lib/python3.8/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "fetch-macos.py", line 162, in fetchmacos
    product.fetchpackages(output_dir, keyword=keyword)
  File "fetch-macos.py", line 132, in fetchpackages
    Filesystem.download_file(item.get("URL"), item.get("Size"), path)
  File "fetch-macos.py", line 35, in download_file
    remote = requests.get(url, stream=True, headers=ClientMeta.osinstall)
  File "/usr/lib/python3/dist-packages/requests/api.py", line 75, in get
    return request('get', url, params=params, **kwargs)
  File "/usr/lib/python3/dist-packages/requests/api.py", line 60, in request
    return session.request(method=method, url=url, **kwargs)
  File "/usr/lib/python3/dist-packages/requests/sessions.py", line 533, in request
    resp = self.send(prep, **send_kwargs)
  File "/usr/lib/python3/dist-packages/requests/sessions.py", line 646, in send
    r = adapter.send(request, **kwargs)
  File "/usr/lib/python3/dist-packages/requests/adapters.py", line 498, in send
    raise ConnectionError(err, request=request)
requests.exceptions.ConnectionError: ('Connection aborted.', RemoteDisconnected('Remote end closed connection without response'))

Seems like Apple aborts image downloads?

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Try stair stepping up to the macOS you want to end up with.

Start with El Capitan first, then Mojave

How to upgrade to OS X El Capitan — Apple Support

https://support.apple.com/en-us/HT206886

MacBook (Early 2015)

MacBook (Late 2008 Aluminum, or Early 2009 or newer)

MacBook Pro (Mid/Late 2007 or newer)

MacBook Air (Late 2008 or newer)

Mac mini (Early 2009 or newer)

iMac (Mid 2007 or newer)

Mac Pro (Early 2008 or newer)

Xserve (Early 2009)

Upgrade to macOS Mojave — Official Apple Support

https://itunes.apple.com/us/app/macos-mojave/id1398502828?mt=12

MacBook (Early 2015 or newer)

MacBook Air (Mid 2012 or newer)

MacBook Pro (Mid 2012 or newer)

Mac mini (Late 2012 or newer)

iMac (Late 2012 or newer)

iMac Pro (2017)

Mac Pro (Late 2013; Mid 2010 and Mid 2012 models with recommended Metal-capable graphics cards)

How to create a bootable installer for macOS — Apple Support

If you want to make a bootable USB installer—quit the installer if it launches automatically. It will be sitting in your applications folder. ex Install OS X El Capitan.app

Once your run the installer it will disappear form your Applications folder.

Что делать с поврежденным DMG?

Встроенная в

ноутбуки на

Mac OS X поддержка широкого спектра форматов дисковых образов — один из наиболее удобных плюсов операционной системы, дающий вам возможность легко зашифровать или разбить ваши данные для их организации и управления. В то время как дисковые образы обычно достаточно надежны, иногда они все же могут быть повреждены.

К сожалению, если это происходит, то вы мало что можете сделать. Тем не менее вот несколько вещей, сделать которые попытаться стоит.

Первый шаг: архивирование

Перед тем, как пытаться вылечить поврежденный дисковый образ, убедитесь что у вас есть его копия. В то время как есть шансы что диск удастся исправить, не меньше шансов на то, что при попытках он будет поврежден еще сильней. В этом случае без копии не обойтись.

Попробуйте «Дисковую Утилиту

»

«Дисковая Утилита» включает в себя несколько функций, которые вы можете попробовать использовать для решения проблемы. Откройте программу и перетащите дисковый образ в список устройств. Затем выберите его и в разделе «Первая помощь» запустите проверку диска. Если проблемы найдутся, попробуйте «Восстановить диск».

Если проблема осталась, вы можете попробовать конвертировать дисковый образ в другой формат или поменять его размер. В то время как эта процедура обычно требует неповрежденный дисковый образ, есть возможность, что прочитается и немонтируемый системой образ. Опции конвертации доступны в меню «Образы». Для изменения размера стоит попробовать опции изменения только раздела, всего дискового образа, а также опцию изменения обоих параметров, т.к. они затрагивают разные части конструкции образа.

Другие утилиты

Также, как и при восстановлении жесткого диска, может быть более результативным использование стороннего ПО, такого, как Data Rescue, VirtualLab, or Macintosh Data Recovery. Эти продукты могут дать лучший результат, чем другие, которые требуют, чтобы дисковый образ уже был смонтирован перед попыткой исправления — это, например, DiskWarrior или Drive Genius.

Также можно попробовать конвертировать дисковый образ в другой формат

, используя утилиту dmg2iso. Кроме нее много и других разнообразных утилит для конвертации DMG, которые вы можете найти, VersionTracker.

Смонтируйте Toast’ом.

Иногда проблема лежит в системном инструменте «diskimagemounter», который оказывается не в состоянии правильно обработать структуру дискового образа. В этом случае сторонний инструмент, не использующий эту системную функциональность, может дать лучший результат. Популярный инструмент для записи CD/DVD — Toast и некоторые другие программы монтировщики могут быть успешнее там, где системные инструменты не помогают. Кроме того, можно попробовать смонтировать проблемный образ, загрузившись в Safe Mode — когда программы и расширения, которые могут влиять на процесс монтирования, будут однозначно отключены.

Дополнительно можно попробовать смонтировать образ в другой операционной системе

. Часто утилиты, обеспевающие мак-совместимость в Linux’е или Windows используют более успешные (хотя и зачастую «сырые») методы для монтирования или конвертирования файловой системы, чем методы Apple.

Вот некоторые из способов смонтировать DMG в другой операционной системе: Windows:
     IsoBuster
     TransMac

Сервисы восстановления данных

В качестве последнего средства есть различные сервисы восстановления данных, декларирующих, что они могут восстанавливать данные из поврежденных DMG-файлов.