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I made the computer disk read only by mistake and after that I logged off from the Ubuntu and switched off my system. When I started my system then it is unable to restart or reboot. Clicked Ctrl+F2 but it is only showing

dev/sda6: recovering journal

dev/sda6: clean, 242560/1187840 files, 3331370/4742144 blocks

I'm unable to do login or anything after this. System is also not going to bios mode and also unable to re-install the Linux via flash driver as not getting reboot options. Can't do anything after this:

Screen photo

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  • When you start your computer , press F2, Shift , Escape several times. This may allow you to enter to BIOS/UEFI and boot from thumb drive. Nov 23, 2021 at 20:59
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    What specifically did you do to make the disk read-only? Nov 23, 2021 at 22:45
  • I used the following command in my main computer directory sudo chown -R username /
    – Yanki141
    Nov 24, 2021 at 6:30
  • I'm unable to interact with my system after the error. So unable to purge nvidia or do anything. Also, tried with SysRq reboot (Alt+SysRq+b) but that also did not work.
    – Yanki141
    Nov 24, 2021 at 14:34

1 Answer 1

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The only thing I can think of in your case would be to use a different computer to install a live-boot operating system on an external hard drive. Then, plug that drive into the machine you're having issues with. Since the main disk is read-only, the PC should automatically default to the next available option for re-boot, which would be external drives.

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  • I have a live usb drive but still not getting any reboot option.
    – Yanki141
    Nov 24, 2021 at 6:34
  • If what I wrote works, you would have to use an external disk drive (one of the large ones that hold somewhere around 220 GB) that is readable and re-writeable, not just bootable drive like a USB) Please note that I have never tried to do this before, so unless you have an external hard disk in your possession, don't spend the money purchasing one. Nov 26, 2021 at 19:32

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