[PVE-User] PVE 3.4 upgrade problem - grub can't be installed your core.img is unusually large

[Dietmar Maurer]

> Strange, it is much smaller here:
> 
> # ls -l /boot/grub/i386-pc/*.img
> -rw-r--r-- 1 root root   512 Jan 29 11:18 /boot/grub/i386-pc/boot.img
> -rw-r--r-- 1 root root 25485 Jan 29 11:18 /boot/grub/i386-pc/core.img
> 
> Do you have/use some special grub setup?

Or do you use software RAID (md raid)?