There is no default directory "/var/mapper." It is supposed to be /dev/mapper. Can you do all of that steps again, but before you reboot, can you please give me the output of the following files: >cat /dev/mapper >cat /etc/fstab >cat /etc/crypttab On Sun, Jul 29, 2012 at 10:59 PM, Todd And Margo Chester < [log in to unmask]> wrote: > On Sun, Jul 29, 2012 at 7:37 PM, Todd And Margo Chester >> <[log in to unmask] <mailto:[log in to unmask]**>> wrote: >> >> Hi All, >> >> I can set up "/dev/mapper/lin-bak" with >> >> # cryptsetup luksOpen /dev/sdb1 lin-bak >> >> but it disappears after I reboot. This messes up my >> crypttab/fstab. Any idea what I am doing wrong? >> >> Many thanks, >> -T >> > > > On 07/29/2012 06:15 PM, Tam Nguyen wrote:> Hi Todd, > > > Did you create a file journal (mkfs...) after you executed the command?: > > > > # cryptsetup luksOpen /dev/sdb1 lin-bak > > > > > > Basic steps are: > > 1) cryptsetup luksFormat /dev/xyz > > 2) cryptsetup luksOpen /dev/xyz abc <---then verify it in /dev/mapper > > 3) mkfs.ext4 /dev/mapper/abc <--- i like to use ext4. Do research > > on this journal if you're not clear. > > Now that we got it settled. Come the fun part- automounting: > > 4) configure your /etc/fstab > > 5) then configure your /etc/crypttab > > Before you reboot your machine, do a tested mount: > > >mount -a > > > > -Tam > > > > > Yes, did all that. I can mount too. But, when I reboot, > lin-bak disappears from /var/mapper. AAAHHHH! > > -T >