Re: Embedding area too small... (GRUB2 on software RAID1)

[Joey Korkames]

Lapohos Tibor writes:

> > ... and I got a warning and an error message: 
> > "Embedding area is too small for
> > core.img." and ...
> It rather reads: "Your embedding area is unusually small.  core.img won't fit in 
> it."
I found the error message accurate, but ultimately unhelpful when I got it.
I had to read the grub-setup source code to understand what the heck this 
really means.
The "embedding area" is the space between your MBR and your first 
partition. Loading up grub-mkimage with raid support or other goodies will 
make core.img too big to fit in this space (on a typical disk 
partitioned with just about any tool). So I rebuilt my disks with the first 
partition offset a few MiBs from the beginning of the disk.
example:
parted -s /dev/sda mkpart primary 5m 50%
parted -s /dev/sda mkpart primary 50% 100%

Another solution is to label your disks with GPT (with a hybrid MBR). Your 
embedding space should then be a real GPT partition with a GRUB type.
http://grub.enbug.org/BIOS_Boot_Partition