I tried so far, completly wipe drives, create own LVM in live image, which worked, tryed to force new UUID. Nothing worked.
If your system uses UEFI, then access the EFI System Partition (ESP) using a live boot media or whatever. It is normally a small FAT32 partition. Once you have it mounted somewhere, you'll find a tiny GRUB configuration file at
<mountpoint>/EFI/debian/grub.cfg. It is actually just a reference to the location of the actual GRUB configuration file. On my system, where
/boot is a normal GPT partition (not within LVM), the file looks like this:
search.fs_uuid 1406433d-b809-4e38-adea-94f1b95ae313 root set prefix=($root)'/grub' configfile $prefix/grub.cfg
On your system, the first line is probably different and mentions the (now obsolete) LVM ID. Make sure that it correctly references the filesystem that contains your
/boot/grub directory; even though it mentions
root, it does not necessarily mean the root filesystem of the Linux OS, but just the root of the GRUB's directory structure, which may be a part of the root filesystem or a separate