Could you do me a favor and post the output of fdisk(8) and disklabel(8) for your boot drive? If
, for example, that drive is
sd0, I'd like to see the output of
# fdisk sd0 and
# disklabel sd0, because as I've noted previously,
ERR M is a very specific configuration error produced by biosboot(8):
Code:
ERR M Bad magic. The ELF ``magic number'' \7fELF in boot(8)'s header
was not found. This indicates that the first block of boot(8)
was not read correctly. This could be due to disk corruption,
failing to run installboot(8), giving an invalid boot(8) program
as the boot argument to installboot(8), or incorrect geometry
translation.