How to restore grub?

Ubuntu LVM
When starting the machine the error appears
5df0f486682d7041323236.png
Tried to repair the boot loader using a live cd with Boot repair, but there is nothing coming in, as far as I know live cd can not mount a lvm. Expanded possibilities unavailable "option Mestoraspolozhenie GRUB"
April 3rd 20 at 17:30
2 answers
April 3rd 20 at 17:32
Thanks for the reply, I stalled
5df106cb16049781059699.png - Camille commented on April 3rd 20 at 17:35
@Camille, you Have a section like the file system is corrupt.
Try
fsck.ext4 /dev/mapper/video--router--vg-root - susanna commented on April 3rd 20 at 17:38
@susanna, I certainly did as you advised, but it's lvm, is it supposed it work? I think if only for the worse
5df1f5a282f38538533284.png - Camille commented on April 3rd 20 at 17:41
@Camille, lvm is only an abstraction, FS on the partition you have.
You have on video--router--vg-root or not ext file system, or you just broke.
The output of lsblk show - susanna commented on April 3rd 20 at 17:44
@susanna, thanks for the response, eventually fixed the disk layout thanks to testdisk, and then restored grub using boot-repair - Camille commented on April 3rd 20 at 17:47
April 3rd 20 at 17:34
You got how many physical disks? If more than one, it seems that one of the disks fell off.
physically a disk one, and it consists of two logical volumes - Camille commented on April 3rd 20 at 17:37

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