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Question: 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.

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Answer:
Answer:

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

Apr 21, 2018 2:50 PM

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

Apr 21, 2018 3:04 PM

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Question marked as Solved

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

Apr 22, 2018 6:59 AM

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User profile for user: makitapen

Question: Update late 2011 iMac to MacOS High Sierra stuck