Cannot open sparsebundle disk image since the last update

Since the last update of El Capitan (10.11.5) I can't open a sparsebundle disk image. A message says "protocol type incompatible with socket". Does anyone have an idea to access to my data on this disk image ?


Thanks

MacBook Pro with Retina display, OS X El Capitan (10.11.5)

Posted on May 17, 2016 8:35 AM

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10 replies

May 17, 2016 11:55 AM in response to remdml

Please read this whole message before doing anything.

This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.

The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, by a font conflict, or by corruption of the file system or of certain system caches.

Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards, if applicable. Start up in safe mode and log in to the account with the problem.

Note: If FileVault is enabled in OS X 10.9 or earlier, or if a firmware password is set, or if the startup volume is a software RAID, you can’t do this. Ask for further instructions.

Safe mode is much slower to start up and run than normal, with limited graphics performance, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal startup may also be somewhat slow.

The login screen appears even if you usually login automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.

Test while in safe mode. Same problem?

After testing, restart as usual (not in safe mode) and verify that you still have the problem. Post the results of the test.

May 17, 2016 1:14 PM in response to remdml

I don't recommend downgrading. I'm running the same version as you, and I have no problem with disk images.

If you don't already have a current backup, please back up all data, then reinstall the OS.* You don't need to erase the startup volume, and you won't need the backup unless something goes wrong. If the system was upgraded from an older version of OS X, you may need the Apple ID and password you used.

There are ways to back up a computer that isn't fully functional. Ask if you need guidance.

If you installed the Java runtime distributed by Apple and still need it, you'll have to reinstall it. The same goes for Xcode. All other data will be preserved.

*The linked support article refers to OS X 10.11 ("El Capitan"), but the procedure is the same for OS X 10.7 ("Lion") and later.

May 17, 2016 2:18 PM in response to remdml

Is it possible to create a new disk image on a drive to test?


I've seen some odd issues with external disks over the El Capitan beta cycle. I've had drives that converted to Read Only then after the next beta build would magically become readable. Personally, since upgrading to the final 10.11.5 release, my drives are not ejecting every time after the clone process is complete. Every 2/5 clone backup result in a failure to eject the drive. Prior to the final release, eject had worked every time in the last beta build.


I've seen other reports today with users reporting problems with older drives. I'm going to guess that these older drives need to be reformatted to be recognized by this latest version of El Capitan.


If you can't afford to loose the data on the drive by reformatting the drive, I would wait and see if an update fixes the issue.

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Cannot open sparsebundle disk image since the last update

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