Migration problem: GRUB install fails (diskboot.img size must be 512 bytes.)

[ToeiRei]

I run a TrueNAS Core system on a HP Microserver Gen10 plus and uploaded the migration package ("update to scale" doesn't fit here and hurts my common sense). I run the system disk via USB due to the earlier HP models not being able to boot from a SSD that was built in.

Sadly this error pops up:

[EFAULT] Command ['grub-install', '--target=i386-pc', '/dev/da0'] failed with exit code 1: Installing for i386-pc platform. grub-install: error: diskboot.img size must be 512 bytes.

Any way to work around this issue as I would love to migrate to scale as I could save myself a couple of extra VMs...

Cheers
Rei

 

[azsose]

I am getting this too. Cannot seem to find a way around. I have plenty of storage space on the OS drive and the NAS drives.. And it is wiping out my MBR and killing my Core install

 

[ToeiRei]

The MBR has nothing to do with overall storage space. The error reads that diskboot.img has the wrong size - which is what we're trying to write into the MBR

 

[azsose]

The MBR has nothing to do with overall storage space. The error reads that diskboot.img has the wrong size - which is what we're trying to write into the MBR

Understood. Their process doesn't work in all cases is all I am getting at. There is a bug or steps missing.

 

[ToeiRei]

To elaborate your answer here from my experience with Gentoo Linux and "building things from scratch" I came across that same error message when dealing with CLANG and MUSL - which made me add -sanitizer to the USE flags for the clang runtime as compiler-rt-sanitizer was broken at that time;

As a matter of fact, GRUB was building fine with the GRUB_PLATFORMS variables set up correctly, no errors and so on - but on installing GRUB to the MBR the error reads as we know it: `grub-install: error: diskboot.img size must be 512 bytes`

I ended up with the very same error as we're facing it. Which leads me to my best guess here being: grub creates "diskboot.img" in an extremely hairbrained way and that maybe the linker used may had its dirty little fingers on it, shrink diskboot.img

For a better understanding of grub and the images referred to, I suggest a look at https://www.gnu.org/software/grub/manual/grub/html_node/Images.html

 

[LordRion]

I am getting the same Error as well... I see they have a bug report open about it.. but it doesn't seem to be getting much traction,