How to restore grub 1.99?

Question

GRUB

I don't know how, but the GRUB v.1.99 bootloader was killed on the laptop. Gives the following error:

GRUB loading.<br/>
error: no such device: ca24e38d-4441-4a89-b31d-01b14bbc8ef3.<br/>
Entering rescue mode...

... and accordingly falls out in Rescue. The ls command shows the system partition (hd0). The ls (hd0) command gives an error: unknown filesystem.
As I understand it, most likely when updating (or incorrectly installing) GRUB got up somewhere “in the wrong place”. How would you put it in place? There is no disk drive, it was not possible to boot from a USB flash drive.
UPD: It turned out to boot from a USB flash drive. Restored.
UPD2: But I didn’t restore it. For some reason, the disk is not mounted, although GRUB was installed on it without errors.

Answer 1

Agree with mark_ablov, it's likely that the drive is disabled or corrupted.
However:
It may help, if the OS still manages to boot:
1. We climb into the file system, look for /etc/fstab, look at which disk this UUID belongs to. Let's say it's /dev/sda1.
2. $ blkid /dev/sda1[this will give us the UUID of the disk]
3. Change the UUID in /etc/fstab to the correct one.
4. # mount -a
If it is not possible to boot into the OS, then:
From the bootable flash drive, we climb into the console:
$ sudo update-grub

Answer 2

Maybe it'll come in handy .

Answer 3

grub identifies physical disks by a UUID that is generated based on the disk's internal info.
It tells you that a disk with that UUID was not found.
Are you physically okay?

Answer 4

Check the file system on the disk.