I would like to thank everyone to helping. Looks like it is working. Here is the action:
With Live GParted, reduce sda5 to minimum ~ 60GB. Create new partition, sda6 ~420GB. Booted back to Debian. pvcreate /dev/sda6 vgcreate xenvg /dev/sda6 lvcreate -l +100%FREE xenvg -n xenlv mkfs.ext4 -m 0 /dev/xenvg/xenlv Updated /etc/fstab last line: /dev/mapper/xenvg-xenlv /xenfs ext4 defaults 0 # mount -a # ls -a /xenfs . .. lost+found # df -h Filesystem Size Used Avail Use% Mounted on <snip> /dev/sda1 236M 49M 176M 22% /boot /dev/mapper/mycomp--vg-tmp 360M 2.1M 335M 1% /tmp /dev/mapper/mycomp--vg-var 2.7G 366M 2.2G 15% /var /dev/mapper/mycomp--vg-home 4.8G 143M 4.4G 4% /home <snip> /dev/mapper/xenvg-xenlv 413G 71M 412G 1% /xenfs
