Has anyone met an error on mac os when the main drive is not mounted?

Question

Hard disks

Hello. Recently, I had a memory overflow on my macbook due to the fact that the docker place ate everything on the disk while rolling the dump from the prod. Then there was a joke with the discs. The primary Macintosh HD drive now appears in diskutility as unmounted. It doesn’t want to mount, it gives an error



. At the same time, the system works fine, except that I can’t see the distribution of information on the disk in storage, what it takes, plus some programs during installation ask you to specify a partition for installation and write that there are no partitions available. There really isn't one in /Volumes.

If you try to enter debug mode, then these partitions are mounted there. The check passes, diskutility does not show errors. I tried to go into safe mode, the disk is displayed there and its partitions are mounted. I tried to unmount and mount, but in normal mode again the partitions are shown as unmounted.

I even tried to reinstall mac os without formatting the disk, the os was reinstalled, the problem has not been solved yet.

Has anyone else experienced this, does anyone know how to fix it?

Answer 1

Solved the problem like this. I made a backup copy from safe mode, then launched the system update to Big Sur (the update did not start in safe mode), after the update everything worked. Apparently some system files were destroyed. The truth is strange that the reinstallation of the system did not help.

Answer 2

However, the system is working normally.

First, copy all important data from the disk and make sure the copies are working. Don't do anything without it.
Also, as I understand it, you have already kept the computer on for a while and nothing has changed? For some, the error goes away after waiting - for someone after 30-40 minutes, for someone - after 2-3 hours.
Someone suggests running First Aid in such cases, but I don’t really trust such advice in terms of data safety, and even this button is disabled for you.
Launch the terminal (Finder -> Applications -> Utilities -> Terminal), write there diskutil list. See what the command produces. Based on the result, you can try to mount either the disk from the screenshot, or the one you need if it has a different identifier (specify it instead of disk1s1 ): diskutil mount /dev/disk1s1.
Open Activity Monitor and look for the process there fsck_файловаясистема, i.e. start searching for fsck , and look for fsck_hfs or similar in the results.
Click on the cross and give it a Force Quit.
Further, you can still independently launch a forced one fsckin different modes, but this can also crumble the data, so it’s better to limit yourself to the above for now.

Answer 3

In Big Sur, the system partition is not mounted.