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Level 1

13 points

High Sierra install fail loop

I tried to upgrade my MacBook Pro mid-2012 (500Gb HDD) from Sierra to High Sierra. Downloaded the update painlessly, however the installation process hangs at around 43min remaining and fails with a « Installation failed (DiskManagement error 0) »

If I click on the Restart button, the whole process starts over and the installation fails at the exact same point.

I already ran disk repair on my main macOS partition but to no avail (Repair said the partition was fine)

I have a 2 weeks old backup but not currently with me so I can’t restore anything at the moment.

Disk utility recognises the main partition and even allows me to mount it. I did have a second Linux partition but I cleared it thinking this was the issue but Nope, same problem occurs with or without the Linux partition.

What am I supposed to do to get out of this loop? At this point, I would be happy if I could at worst get back to the previous OS.

Thanks in advance.

Posted on Oct 11, 2017 3:25 AM

Best reply

rafaelfromnew york

Level 1

13 points

Posted on Feb 3, 2018 4:20 PM

Hi All,

I was able to solve my installation loop problem by doing the following:

Start from the USB installer drive.

Launch Disk Utilities and select the drive where you want to install the OS.

Select to PARTITION the drive.

Select the one existing partition and choose to format as 'Mac OS Extended (Journaled)'

Restart the computer and run the OS installer (the installer will re-format the partition as APFS).

For some reason the installation fails if you try to install on a volume that is already APFS, but will proceed to completion if you start with a non-APFS volume and let the installer format it as APFS as part of the installation routine.

Cheers, y'all!

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21 replies

DSPascal

Level 1

4 points

Mar 30, 2018 8:48 AM in response to rafaelfromnew york

This is working for me. I received my macbook pro 2017 yesterday. I was asked to upgrade to high sierra if i need to use time machine to recover with time machine. It upgraded just fine. when I launched the recovery, that is where my problems started. I just spent two days on this loop. before I find this post, I did the SMC reset. Was it of some help? I cannot say. I just booted on Sierra. Thanks again

joandon

Level 1

8 points

May 2, 2018 4:31 PM in response to b54v55

I don't get any of that. My desktop was stored for a few weeks and now is stuck in this loop - doesn't recognize keyboard and I can't bypass the installation without pressing D or whatever

I don't know anything about a usb start up and I don't have any discs

OscarH42

Level 1

4 points

May 5, 2018 10:08 PM in response to b54v55

The problem is old and apple is not giving any solution. It's really frustrating.... We didn't pay for a conventional lap top and it's supposed We were paying for quality and good technical support...

Waiting for the solution APPLE.....

Feb 16, 2018 4:29 PM in response to b54v55

I have the same problem. Did the apple hardware test do any good? It prompted me to do so so im currently doing it. I don’t know if it will actually work but this is really frustrating

ACarmany

Level 1

4 points

Feb 24, 2018 10:57 AM in response to gabriele1973

Thank you! This worked for me!!

Mar 5, 2018 7:51 PM in response to Cyriszone

Same boat. So disapointed with Apple. I use to have so much pride and found so much joy in my Mac. Now it's dead. Lost my wedding photos...

Tried everything on this thread. Nothing is working

High Sierra install fail loop