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Question: Mac desktop crashed; now disk utility first aid returns error

Greetings,

My Mac desktop is a 27" 5K Retina, system 18,3.

I also run Parallels Desktop 13.

I was compressing the PD13 VM disk when the Mac host machine completely locked up.

I had to power it down to reboot.

Upon reboot it sent a PANIC report back to Apple.

I ran Disk Utility First Aid and this is the result:


Verifying file system.

Volume could not be unmounted.

Using live mode.

Performing fsck_apfs -n -l -x /dev/rdisk1s1

Checking volume.

Checking the container superblock.

Checking the EFI jumpstart record.

Checking the space manager.

Checking the object map.

Checking the APFS volume superblock.

Checking the object map.

Checking the fsroot tree.

error: invalid dstream.size (494593892352), is greater than dstream.alloced_size (391420366848)

error: xf : INO_EXT_TYPE_DSTREAM : invalid dstream

error: inode_val: object (oid 0x18471a): invalid xfields

fsroot tree is invalid.

The volume /dev/rdisk1s1 could not be verified completely.

File system check exit code is 0.

Restoring the original state found as mounted.

Operation successful.

_________________________________________________________

Any ideas on how to fix this would be MUCH appreciated.

iMac, macOS High Sierra (10.13.4)

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Answer:
Answer:

Internet/Network Recovery of El Capitan or Later on a Clean Disk


If possible backup your files before proceeding.


  1. Restart the computer. Immediately after the chime hold down the (Command-Option-R) keys until a globe appears.
  2. The Utility Menu will appear in from 5-20 minutes. Be patient.
  3. Select Disk Utility and click on the Continue button.
  4. When Disk Utility loads select the drive (usually, the out-dented entry) from the side list.
  5. Click on the Erase tab in Disk Utility's main window. A panel will drop down.
  6. Set the partition scheme to GUID.
  7. Set the Format type to APFS (SSDs only) or Mac OS Extended (Journaled.)
  8. Click on the Apply button, then click on the Done button when it activates.
  9. Quit Disk Utility and return to the Utility Menu.
  10. Select Reinstall OS X and click on the Continue button.


Note:

1. To install the version of OS X that was currently installed use Command-Option-R.

2. To install the original factory version when the computer was new use Command-Option-Shift-R.


If this cannot be done because of problems with the SSD then make an appointment at the Apple Genius Bar for service. If you need to find an Apple Store - Find a Store - Apple.

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Apr 20, 2018 12:47 PM in response to rhsATL In response to rhsATL

Disk Utility cannot make repairs to a mounted volume. Boot into Recovery Mode and run Disk Utility > First Aid. Run it until it reports no errors found or it reports the disk could not be fixed.

About macOS Recovery - Apple Support

Apr 20, 2018 12:47 PM

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Question marked as Apple Recommended

Apr 20, 2018 12:49 PM in response to rhsATL In response to rhsATL

Internet/Network Recovery of El Capitan or Later on a Clean Disk


If possible backup your files before proceeding.


  1. Restart the computer. Immediately after the chime hold down the (Command-Option-R) keys until a globe appears.
  2. The Utility Menu will appear in from 5-20 minutes. Be patient.
  3. Select Disk Utility and click on the Continue button.
  4. When Disk Utility loads select the drive (usually, the out-dented entry) from the side list.
  5. Click on the Erase tab in Disk Utility's main window. A panel will drop down.
  6. Set the partition scheme to GUID.
  7. Set the Format type to APFS (SSDs only) or Mac OS Extended (Journaled.)
  8. Click on the Apply button, then click on the Done button when it activates.
  9. Quit Disk Utility and return to the Utility Menu.
  10. Select Reinstall OS X and click on the Continue button.


Note:

1. To install the version of OS X that was currently installed use Command-Option-R.

2. To install the original factory version when the computer was new use Command-Option-Shift-R.


If this cannot be done because of problems with the SSD then make an appointment at the Apple Genius Bar for service. If you need to find an Apple Store - Find a Store - Apple.

Apr 20, 2018 12:49 PM

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Apr 20, 2018 1:05 PM in response to rhsATL In response to rhsATL

Ok.

I tried the first suggestion and that did not work.

I will try the suggestion from Kappy.

I use Time Machine.

I'm pretty sure I know the answer, but I'll ask anyway to be sure.

Reinstalling the OS will NOT delete everything else, or will I have to restore from Time Machine?

Thank you VERY much for your assistance!

Apr 20, 2018 1:05 PM

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Apr 20, 2018 3:32 PM in response to Kappy In response to Kappy

Once I followed your instructions TO THE LETTER I finally saw the spinning globe and was able to start the OS X reinstall.

I am now restoring everything (keep your fingers crossed!) from time machine.

2 almost simultaneous incidents precipitated all this:


1) Time Machine sudddenly sent a message about the “identity” of my backup disk had changed; do I want to continue using it. I said keep using it.

2) I was shrinking the size of my Parallels Desktop VM HDD when I got the rainbow frisbee. The Mac conpletely locked up so I powered it down.


Then I saw the file structure was corrupted and disk utility could not repair it. The Parallels VM was also corrupted.

Wow. Do Macs and SSD’s not get along?

I’ve owned this Mac for about 3 weeks.


I’m still restoring. I hope I haven’t lost everything!!

Apr 20, 2018 3:32 PM

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Question: Mac desktop crashed; now disk utility first aid returns error