Hello.

I’m trying to make a copy of a disk I have before I newfs it to start from
a clean slate.

The machine in question boots (but has an issue w /lost+found that fsck
cannot fix). The 1tb ssd is setup w 3 wedges: 1st for efi, 2nd for
NetBSD/ffs, 3rd for swap.

I boot w a NetBSD 9 install iso (USB key), and I can mount the internal
disk /dev/dk1 and see the familiar contents. I have an external USB disk
that I’m using to store an image to.

With the dk1 unmounted, I ran:

# </dev/rdk1 progress -l 939413388k vndcompress -c -k 256 -l 939413388k
 /dev/stdin /mnt/home/bch/myimg.imz

...which ran (for a long time) apparently without error.

I associate the img w and vnd device:
# vndconfig -z vnd0 /mnt/home/bch/myimg.imz

Then try mounting (vnd0a or vnd0d) and get “incorrect superblock” errors.
What am I doing incorrectly? disklabel reports ‘a’ as fstype 4.2BSD and ‘d’
as unused, which is similar to what I read here:
http://netbsd.2816.n7.nabble.com/Using-cloop2-images-td66421.html#a66423

Help?

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