Disk utility can't format ssd

I searched a lot for this but could not find the answer anywhere.


When I start my mac book pro (mid 2012, non-retina) it takes a long time to appear anything (1min) and it shows a prohibitory symbol instead of the apple logo.


In the recovery mode I try to install High Sierra from a usb with the ISO or even from the internet recovery and receive an error that says permission denied or when I try to format using disk utility it says the erase/format failed, can't unmount disk.


The back story is that the mac book was not coming back on from the sleep, so I had to force shutdown a couple of times, I believe the update failed and messed something, and eventually I was unable to turn it on, so I used disk utility to try to repair the drive. The repair lasted 5 seconds but it failed and it would not let me repair anymore.


I can format and use the ssd normally anywhere else (in windows or another mac as an external ssd).

I tried to install again after formatting the ssd in different computers and formats (NTFS, mac os extended, exFAT, FAT) and writing over the ssd with zeros but got the same problem.


The ssd works fine in the original mac book if I try to install it from a usb adapter, so I tried to install the fresh OS using the usb adapter, and everything worked fine, but when i try start the system with the ssd internally, I receive the prohibitory symbol.

If I try to boot internally with the original HD, it works fine.


I also tried to rebuild the partition table using 'fdisk' and 'gpt' or unmounting using 'diskutil unmountDisk' with no success.


The mac book model is A1278, and I'm using a samsung ssd.


I really have no clue what could be the problem.

Thanks for helping

MacBook Pro, OS X El Capitan (10.11.6), High Sierra tried to update the OS

Posted on Dec 5, 2017 6:58 PM

Reply
3 replies

This thread has been closed by the system or the community team. You may vote for any posts you find helpful, or search the Community for additional answers.

Disk utility can't format ssd

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.