# dd if=/dev/zero of=myVnHDD.iso count=10240

# mdconfig -a -t vnode -u 4 -f myVnHDD.iso

# mkdir /etc/gbde


### just exit the editor
verdandi# gbde init /dev/md4 -i -L /etc/gbde/md4
Enter new passphrase:
Reenter new passphrase: 

verdandi# gbde attach /dev/md4 -l /etc/gbde/md4 
Enter passphrase: 
verdandi# newfs /dev/md4.bde 
/dev/md4.bde: 48.5MB (99264 sectors) block size 16384, fragment size 2048
        using 4 cylinder groups of 12.12MB, 776 blks, 1600 inodes.
super-block backups (for fsck -b #) at:
 160, 24992, 49824, 74656

verdandi# mount /dev/md4.bde /mnt

verdandi# echo 'very secret stuff' > /mnt/secret.txt

verdandi# ll /mnt
total 4
drwxrwxr-x  2 root  operator  512 Feb  9 13:13 .snap
-rw-r--r--  1 root  wheel      18 Feb  9 13:13 secret.txt

verdandi# umount -f /mnt

verdandi# gbde detach /dev/md4

verdandi# mdconfig -d -u 4
verdandi# strings myVnHDD.iso | grep -i secret
verdandi# mdconfig -a -t vnode -u 4 -f myVnHDD.iso
verdandi# gbde attach /dev/md4 -l /etc/gbde/md4
Enter passphrase: 

verdandi# fsck -p -t ffs /dev/md4.bde 
/dev/md4.bde: FILE SYSTEM CLEAN; SKIPPING CHECKS
/dev/md4.bde: clean, 2276 free (20 frags, 282 blocks, 0.9% fragmentation)

verdandi# mount /dev/md4.bde /mnt
verdandi# cat /mnt/secret.txt 
very secret stuff