The MacBook Pro (Mid 2012) won't boot because it can't find the system software (flashing questionmark folder when trying to boot).
I tried to reinstall the system by installing macOS on an external HDD, booting the MacBook Pro from the HDD and trying to erase the internal HDD (APFS) which won't work because of the following error:
POSIX reports: The operation couldn't be completed. Input/output error.
I also tried to erase the internal HDD with diskutil apfs deleteContainer /dev/disk2s2
, same problem,
Error: 5: Input/output error
Trying to run First Aid gives the following error on the APFS Physical Storage:
The volume /dev/disk0s2 could not be verified completely.
Storage
system check exit code is 8.
Storage system verify or repair failed.
Operation failed…
Anything else I could try?
Best Answer
To reinitialize the drive, you can enter the following. If this does not work, then you should consider that the drive, cable and/or controller may have failed.
Enter the following command.
If
disk0
does not currently have any partitions, then you will receive the following message, which can be ignored.Next, enter the following commands.