> [washu]:/etc> disklabel -w /dev/sd0c Quantum\ FB\ 540S
> disklabel: ioctl DIOCWDINFO: Label magic number or checksum is wrong!
> (disklabel or kernel is out of date?)
> 
> *sigh*  Ok, it seems there is a disklabel checksum problem :)
> Heres the disktab I'm using now...
> Quantum FB 540S:\
>         :ty=winchester:ns#138:nt#2:nc#3835:rm#5400:\
>         :pa#131072:oa#0:ta=4.2BSD:fa#1024:ba#8192:\
>         :pb#131072:ob#131072:tb=swap:\

For a disklabel to be compatible with SunOS, you must align your partition
offsets and sizes on cylinder boundaries. With the parameters above
(276 sectors per cylinder) you could have an `a' partition size of e.g.
`pa#130824'.

-pk