High Sierra bricked my iMac .. com.apple.DiskManagement error 0

I've got the same issue as well. DiskManagement error 0 after some time of attempting to install. When I tried Internet recovery, it took me back to Yosemite which, unfortunately, got stuck in a loop on the log in screen. I was able to download the Sierra installer from a Mac at work and re-install that and everything is working fine now but I'd really like to upgrade to High Sierra. Guess I'll have to be patient and wait for a fix.

Hi my mac is bricked by the High Sierra update. So I’m now (according to Apple support) reliant on my pc to restore my Mac to its full health.

Now I’ve created a bootable usb drive, using transmac. But how to I get the Mac OS dmg on this? Where is it, on my Mac I just updated using the App Store.

Also I do not have my original Mac OS (snow leopard) install disk.

Any ideas?

Dave

Hi,

maybe you can find a USB stick preloaded with Sierra Installer on internet shops. Am*z@n?😉

Here is how I managed to restore full operation:

1. Take MacBook with El Capitan and create clone to USB disk

2. Boot bricked iMac from USB disk.

3. Login, goto AppStore and load from purchased items the Sierra Installer.

4. Start installer and select internal disk of iMac.

-> After installation back as before the loop of death. All data preserved.

PM: I have the Sierra Installer (5 GB) on my USB drive. 😉

Hi thanks for that, yes I might have to take a look online see what’s available and by how much. I don’t think I should have outlay anything mind as this is Apples doing. They should allow you to either easily “restore from ladtcknown good”, yes take a leaf from the Windows world. Or let you download an installer from there own site, whether that be Mavericks, Elcapitan or Sierra ... frustrating.

Regards

Dave

A new twist... I borrowed a 16gb usb stick and started up my mac in Internet recovery mode (shift, option command) .. got to the MacOS utilities screen, formatted the usb as journelled as discussed on the phone with Apple support. Was really hopeful, went through same routine, finally got to the grey screen with the progress Bar ... and boom, I install failed as not enough space on the drive..... it’s got 16gb!!!!!!

Regards Dave.

Yes this may be the case but why should you want to put a faulty version of MacOS High Sierra on a USB. It's MacOS Sierra that you need first so that you can revert when you get into the com.apple.DiskManagement error 0 loop.

I have these versions too in my 'Purchase History' I did post some hints on where 'Sierra' might be found but it appears that I have been a bad boy and my post has been deleted. All I can say to you is 'Seek and ye shall find' - The truth is out there.

This was exactly my problem. Fortunately I completed a Time Machine backup just before the attempt to install High Sierra. After 8 hours (including several on the phone with Apple), I gave up and restored from the Time Machine. Amazingly that went flawlessly and the system is whole again.

One Odd note, when the restore was done, I ended up with about 80 GB more Free Space on 'Macintosh HD' than I had before I attempted the High Sierra Installation.

However, I too have a Late 2012 iMac27 so I think this installation failure might not be a coincidence and will hold off on another attempt until a DOT revision ... the new security fix is supposed to be included on the next revision anyway.

Sierra: 10.12.6 (16G29)

iMac (27-inch, Late 2012)

2.9 GHz Intel Core i5

32 GB 1600 MHz DDR3

Situation Update: It worked!

OK! They released a new build of 10.13 earlier this week so I waited a few days and gave it a try today.

The installation went flawlessly and so far everything looks great.

Oddly, after the installation, I ended up with about 15 GB more free space on my HD and the systems seems quicker ... Even on the first and second boots, and that's unusual based on past experience.

Previous comment from October 3:

This was exactly my problem. Fortunately I completed a Time Machine backup just before the attempt to install High Sierra. After 8 hours (including several on the phone with Apple, I gave up and restored from the Time Machine. Amazingly that went flawlessly and the system is whole again.

One Odd note, when the restore was done, I ended up with about 80 GB more than I had when I attempted the High Sierra Installation.

However, I too have a Late 2012 iMac27 so I think this might be a coincidence and will hold off on another attempt for a while.

Sierra: 10.12.6 (16G29)

iMac (27-inch, Late 2012)

2.9 GHz Intel Core i5

32 GB 1600 MHz DDR3

One thing I forgot to mention. The first time I tried, I had 'Bit Defender' running on Startup and forgot to disable it. I disabled it for the second attempt just to be sure. I don't think it was a problem but I figured I would mention it.

Good luck and be sure to refresh your time machine backup before you start. If the installation does crash, it's a a simple recovery with Time Machine and you can sit and wait to see if they release another 'Build' of the O/S.

The updated version of High Sierra installed just fine on my 2012 Mac Mini. It paused for some time at 43 minutes, as it did with the first version, but this time no com.apple.DiskManagement error 0.

I see it didn't work for everybody… in my case I had restored the computer to a working copy of Sierra and deleted the original installer. Are the new failures starting from recovery? I wonder if the installer just tries to reuse the bad version that had already been downloaded? My suggestion is to try again with a freshly downloaded copy on a bootable USB stick.

I agree with your suggestion. Part of the problem I had the first time was that the entire recovery process was corrupted by the installer. It kept retrying with the same failed results. So I'm pretty sure the old installer was still there and a subsequent attempt would just have used the first downloaded installer not the "Robust" (Apple's words) version.😁).

I made my successful attempt from a Time Machine recovery that was updated 15 minutes before I even started downloading the first installer. Another good thing about the Time Machine recovery was that it started by erasing my system drive, so that got rid of a lot of 'dead wood' and created an additional 80 to 90 GB of free space.

Of course, someone who doesn't use Time Machine wouldn't have that option but at this point, removable drives are so cheap, I can't see why everyone isn't using TM just to protect their files, much less recover their system from a catastrophe.