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I have a kernel bug that makes my SSD go into read-only mode. To fix this I have to reboot the system, do fsck /dev/nvme0n1p2, and then reboot again to make everything work.

Instead of doing the reboot, I tried to just do 

sudo fsck /dev/nvme0n1p2

but how can I mount the nvme0n1p2 disk without rebooting? I want to work on my machine without needing to reboot.

I tried:

lz@blade:~$ sudo mount /dev/nvme0n1p2
mount: /: /dev/nvme0n1p2 already mounted on /.

So I tried:

lz@blade:~$ sudo umount /dev/nvme0n1p2
lz@blade:~$ sudo mount /dev/nvme0n1p2
mount: /: /dev/nvme0n1p2 already mounted on /.

Can somebody help me?

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  • 2
    Also, disks go read-only for a reason. You should definitely look into why that's happening. syslog is your friend.
    – tudor -Reinstate Monica-
    Jun 27, 2019 at 3:55
  • 1
    Did you tried blockdev --setrw?
    – Pablo Bianchi
    Jun 27, 2019 at 3:59
  • Are you sure it is not the SSD going into the "I am dying" mode, making it read only so you can rescue stuff?
    – Dr_Bunsen
    Jun 27, 2019 at 14:53
  • @Dr_Bunsen I tried another brand new SSD and the same problem happens, and also other people have this problem
    – Guerlando OCs
    Jun 27, 2019 at 21:21

2 Answers 2

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+50

Can you please try this: 

mount -o remount,rw /dev/nvme0n1p2

It works fine for me.

If you find anything please let me know.

-Karmdip Joshi

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    sudo mount -o remount,rw /dev/nvme0n1p2 mount: /: cannot remount /dev/nvme0n1p2 read-write, is write-protected.
    – Guerlando OCs
    Jul 2, 2019 at 3:53
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From Linux, how to change HDD state from ReadOnly after temporarly crash? the accepted answer (with 12 upvotes, at the time of this writing) states:

try with blockdev --setrw or hdparm -r 0

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