Reboot, now I'm stuck at grub prompt.

[tommyruff]

Hi, I'm am pretty illiterate when it comes to Linux. I don't have dual boot or windows installed. After an update I have rebooted the system and now it has rebooted to a grub command prompt.. I have searched Google and tried to work my way through but I am lost. I have tried resetting boot order to default through bios hoping that may help but it makes no difference. I have taken a screenshot of where I am presently in regards to grub . I'm hoping someone can suggest what I should try next. I don't know how to add screenshot here so I will type what I have on my screen at present.
grub> ls
(proc) (hd0) (hd0,gpt2) (hd0,gpt1) (cd0)
grub> LS (hd0,1)/
efi/ EFI-old/
grub>_

Edit
Ok, so It shows the boot files are on hd0,gpt2

It appears I need to know the kernel version but I can't seem to get it from this grub prompt. I need to know it to load it before booting

I need to set root
Grub> set root=(hd0,gpt2) {is that right?}

I need help

[acerimusdux]

This should do it (be sure you have the proper /dev/ though, it maybe could be /dev/hda2):

Code: Select all

grub rescue> set prefix=(hd0,2)/boot/grub
grub rescue> set root=(hd0,2)
grub rescue> insmod normal
grub rescue> normal
grub rescue> insmod linux
grub rescue> linux /boot/vmlinuz root=/dev/sda2
grub rescue> initrd /boot/initrd.img
grub rescue> boot

If it boots successfully, you should be able to reinstall grub from there with:

Code: Select all

sudo update-grub
sudo grub-install

[tommyruff]

Hi,
Thanks for the reply

I don't know how to get into grub rescue>

It boots to a grub>

[tommyruff]

Hi,
Thanks for the reply

I don't know how to get into grub rescue>

It boots to a grub>

Edit
I ran those commands from grub>
And it has booted into mint 20 .
I'll update grub and see if it reboots into Mint again

[acerimusdux]

Good! It's actually not much different from grub> vs grub_rescue>, you don't need the insmod commands from the regular grub prompt. So could have done:

Code: Select all

grub> set prefix=(hd0,2)/boot/grub
grub> set root=(hd0,2)
grub> linux /boot/vmlinuz root=/dev/sda2
grub> initrd /boot/initrd.img
grub> boot

But the extra commands shouldn't hurt, either.

[tommyruff]

Thank you acerimusdux
you are a life saver
I have tried restart 2 times and it has rebooted into mint correctly.
I think my laptop is showing its age as it does reboot slower than I like.
maybe time for an upgrade.

Once again thank you very much