Hello,
After upgrading grub from 2.02+dfsg1-20+deb10u3 to 2.02+dfsg1-20+deb10u4
I've met the same bug on all boxes with MD raid1 partition starting from
sector 63.
/boot/grub/i386-pc/core.img is 31120 bytes and should fit, but i get:
Installing for i386-pc platform.
grub-install: warning: your core.img is unusually large. It won't fit
in the embedding area.
grub-install: error: embedding is not possible, but this is required for
RAID and LVM install.
Rolling back to 2.02+dfsg1-20+deb10u3 solves the problem and everything
works with the same core.img (MD5 is the same).
