On Sat, Oct 18, 2014 at 12:51:21AM -0700, scar wrote: > i am trying to setup an encrypted partition on my disk by following the > guide[1] but i am a bit lost and not quite understanding the way NetBSD > partitions disks > > /dev/wd1 is the disk i want to use (entirely) and it has been zeroed out > with dd but i guess needs to be labeled and partitioned first before i > can proceed to section " 14.3.2. Scrubbing the disk "? i was able to > enter this command: > # cgdconfig -s cgd0 /dev/wd1e aes-cbc 128 < /dev/urandom > > but when i try the next command this happens: > # dd if=/dev/zero of=/dev/rcgd0c bs=32k > dd: /dev/rcgd0c: Read-only file system > > (note that i'm not using NetBSD/i386 (but sparc64) so that's why i > changed it to rcgd0c) > is wd1e even the right partition i want to use? wouldn't i want wd1c so > i can use the whole disk? but when i try that with the cgdconfig i get > "Operation not supported by device" > > if i try to use 'disklabel -i /dev/wd1' i get a "could not read existing > label" error, and here[2] is the output of fdisk. > > so anyway i guess if could get a little more help preparing the disk so > i can get the encrypted partition setup, would appreciate it!
I suspect that it's because we are trying to zap the initial blocks of the disk where the disklabel lives. Options seem to be: 1) disklabel the disk with a partition not starting at 0 and zap that, or 2) allow overwriting of the disklabel with "disklabel -W" Cheers, Patrick
