I'm trying to create a cold mirror drive on a v240, Solaris 9, and
when I do:

prtvtoc /dev/rdsk/c1t0dos2 | fmthard -s - /dev/rdsk/c1t1dos2

it doesn't copy the partition map from one disk to the other. I also
found that:

prtvtoc /dev/rdsk/c1t0d0s2 (or any other drive) gives no output.

If I use format to select the partition map and label the disk, it
shows the correct partitions on the new disk, but when I do a newfs on
a supposedly valid slice, /dev/rdsk/c1t1d0s0, it returns a prompt with
no errors, but w/o any of the usual feedback you'd get from newfs. If
I fsck the slice after the newfs, I get BAD SUPER BLOCK: BAD VALUES IN
SUPER BLOCK. I spose the drive itself could be bad, but I can't
understand why prtvtoc doesn't return any output from any drive. Does
all this point to one global problem or a couple separate issues?