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Thread: PC Stuck in Grub Rescue, can't fix Grub

  1. #1
    Join Date
    May 2024
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    3

    PC Stuck in Grub Rescue, can't fix Grub

    Hi,

    I recently had my power supply fail taking with it the motherboard and cpu. I have reinstalled all of these retired components but when I go to load up my PC, I am stuck in grub rescue. Previously, I had both linux and windows on the PC.

    I loaded a live copy of Linux mint using a USB and followed the instructions here: https://help.ubuntu.com/community/Boot-Repair

    The pastebin associated with the attempt to fix grub is here: https://paste.ubuntu.com/p/Hf2SfVxBNf/
    Attempting to fix grub did not change anything and I am still just stuck in grub rescue.

    Any ideas of how to fix this would be greatly appreciated.

  2. #2
    Join Date
    May 2008
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    4,144
    Distro
    Ubuntu 24.04 Noble Numbat

    Re: PC Stuck in Grub Rescue, can't fix Grub

    Lines 14 > 18 - No OS to fix, repair file systems and backup data recommended.
    This does not bode well.
    Boot-repair cannot see Windows nor your Linux OS.
    It appears that your disks/filesystems were also damaged following the failure of your power supply.

    Line 163 > 167 - No sign of ESP
    Both systems in old-fashioned Legacy mode although your system is EFI compatible.
    Which version of Windows and what is the other OS?

    Do you have backups of your personal data?

  3. #3
    Join Date
    May 2024
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    3

    Re: PC Stuck in Grub Rescue, can't fix Grub

    Thanks for the response.
    What do you think is the best way to try repair the file systems and get at the personal data there?
    I previously had Windows 10 and Linux mint installed.

    Most has been backed up although I have some work on previous unfinished projects still on the old drives.

  4. #4
    Join Date
    May 2008
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    4,144
    Distro
    Ubuntu 24.04 Noble Numbat

    Re: PC Stuck in Grub Rescue, can't fix Grub

    It is recommended to use Windows tools (chkdsk) for Microsoft file systems.
    For ext4, you can boot into a live "Try Ubuntu" session and use fsck.

    Whether the repair is successful depends on the extent of any damage?

    How did you end up with Windows 10 in Legacy mode?
    Microsoft has been stipulating Windows installations in UEFI mode for more than 10 years?

  5. #5
    Join Date
    May 2024
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    3

    Re: PC Stuck in Grub Rescue, can't fix Grub

    I will give that a shot thanks.

    I'll be honest I am not sure, I installed windows 10 for free when it came out.

    Thanks for all your help.

  6. #6
    Join Date
    Jul 2005
    Location
    I think I'm here! Maybe?
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    Hidden!
    Distro
    Xubuntu 24.04 Noble Numbat

    Re: PC Stuck in Grub Rescue, can't fix Grub

    Thread moved to MINT. which is more appropriate and a better fit.

  7. #7
    Join Date
    Mar 2010
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    /home
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    9,566
    Distro
    Xubuntu

    Re: PC Stuck in Grub Rescue, can't fix Grub

    Note that the repair summary has already attempted an fsck on the partitions, although unsuccessfully.

    I would boot with a live USB, choose to Try Ubuntu and then open a terminal and try the boot repair suggestions from lines 47 or 49:
    Code:
    e2fsck -b 8193 <device>
    or
    e2fsck -b 32768 <device>
    The superblock could not be read or does not describe a valid ext2/ext3/ext4
    filesystem. If the device is valid and it really contains an ext2/ext3/ext4
    filesystem (and not swap or ufs or something else), then the superblock
    is corrupt, and you might try running e2fsck with an alternate superblock
    It's kind of a long shot but worth trying.

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