Problems with Proxmox bootloader, what to do?

Question

GRUB

Problems with Raid 10
Now at startup, boot device not detekted
How can I restore the boot ..
When booting from live
It shows the sda ​​partition
but not a single command works to see that there is
no vgscan on this partition or anything else.

Answer 1

Well, if you want us to guess for coffee, then maybe it’s easier for you to immediately fix the reason that led to the impossibility of loading? There at least it is clear why it is not loaded and what to fix