Update late 2011 iMac to MacOS High Sierra stuck

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makitapen Author

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8 points

Update late 2011 iMac to MacOS High Sierra stuck

I have a late 2011 iMac which was working perfectly on OS 10.9 last night I decided to update it to High Sierra.

It is now stuck at the “ cannot install macOS on this computer” “Mac OS cannot load the files...”

Cannot log in safe mode

Disk utility cannot repair / mount the disk (Machintosh HD)

Cannot go into Targeted disk mode to recover some important files on the drive.

Cannot create a new image from the Machintosh HD

Cannot run Kextstat in terminal (command not found)

Still can’t figure this out. can someone help pls?

Thank you.

Posted on Apr 21, 2018 1:07 PM

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Answer 1

Best reply

makitapen Author

Level 1

8 points

Apr 22, 2018 6:59 AM in response to makitapen

IT WORKED!!!!

(Must be mentioned that the disk could be seen (grayed out) from disk utility.

1- I installed os high Sierra on an external HD

2- started the iMac that couldn’t work from it

3- launched terminal typed:

diskutil list

This listed the drives. I could see my internal (original) Macintosh HD

And my external HD with the OS Sierra installed

4-still on terminal I typed (replace src and dst with device to be mount and the mount point respectively)

sudo mount/dev/src/mnt/dst -o force

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Answer 2

macjack

Level 10

111,168 points

Apr 21, 2018 1:13 PM in response to makitapen

Have you tried repairing the disk by booting into Recovery Mode?

About macOS Recovery - Apple Support

Go to Disk Utility > First Aid and run it until it either reports no errors or it reports the disk could not be fixed.

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Answer 3

makitapen Author

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8 points

Apr 21, 2018 2:50 PM in response to macjack

That’s what I am going to do. But i had hopes that someone here would suggest another fix.

What if I install High Sierra on anonther hard drive? From a working computer.

Then try again recovery mode from the iMac which HD seems to be dead.??

Would that allow me then to access the hard drive?

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Answer 4

macjack

Level 10

111,168 points

Apr 21, 2018 3:04 PM in response to makitapen

You could install Mac OS on an external drive and run your Mac from it. It may allow you to read your internal drive and recover your files.

You can also try Prosoft Data Recovery.

https://www.prosofteng.com/datarescue-mac-data-recovery/

There is a free trial to see if it can recover what you need. But don't do another process on that drive until you've downloaded and run it.

Ideally you should use another bootable drive to download and run Data Rescue.

Depending on how valuable those files are to you, you can also use a professional recovery service, like DriveSavers but it is much more pricey.

http://www.drivesaversdatarecovery.com/

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Answer 5

makitapen Author

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8 points

Apr 21, 2018 3:21 PM in response to macjack

Yeah I am giving it a try now. But still I want to know what happen. Why is it so unsafe.

The files are of a great value. But The loss won’t sting until they’re requested by the clients.

WHY APPLE WHY???

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Answer 6

makitapen Author

Level 1

8 points

Apr 22, 2018 7:10 AM in response to makitapen

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Answer 7

makitapen Author

Level 1

8 points

Apr 21, 2018 1:17 PM in response to macjack

I did so. And it says the disk cannot be repaired

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Answer 8

macjack

Level 10

111,168 points

Apr 21, 2018 2:32 PM in response to makitapen

Then you'll need to replace the disk. If you don't have a backup you can try putting that disk into an enclosure after it's been replaced to see if you can recover your files.

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Answer 9

macjack

Level 10

111,168 points

Apr 21, 2018 5:01 PM in response to makitapen

A hard disk can fail at any time new or old. It may be coincidental that it failed during an upgrade. If that disk has been working since 2011, it had a long life as hard disks go.

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Answer 10

macjack

Level 10

111,168 points

Apr 22, 2018 7:10 AM in response to makitapen

I'm glad to hear that but keep a good eye on that disk and keep a daily backup.

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Update late 2011 iMac to MacOS High Sierra stuck

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