I have added a 160G hbd to my system. [root@pacman mnt]# fdisk /dev/hdb Command (m for help): p Disk /dev/hdb: 160.0 GB, 160041885696 bytes 255 heads, 63 sectors/track, 19457 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/hdb1 * 1 13 104391 83 Linux /dev/hdb2 14 19457 156183930 83 Linux --------------------- As /dev/hdb2 it has 777 privileges. [root@pacman dev]# ls -la /dev/hdb2 brwxrwxrwx 1 root disk 3, 66 Sep 15 18:26 /dev/hdb2 <=== ------------------ Mounted as /mnt/HDB2 it also shows 777 privileges. [root@pacman mnt]# ls -l total 146 drwxr-xr-x 2 root root 4096 Aug 30 22:04 150G drwxr-xr-x 2 root root 4096 Jul 21 2006 cdrom drwxrwxr-x 2 kjones kjones 4096 May 23 2006 fitch01 drwxr-xr-x 2 root root 4096 Sep 4 22:46 HDB drwxr-xr-x 4 root root 1024 Aug 26 23:25 HDB1 drwxrwxrwx 3 root root 4096 Sep 15 21:25 HDB2 <=== ------------------ But I can not make a ordinary directory on it. What am I not doing? [root@pacman mnt]# ls -la /mnt/HDB2 total 60 drwxrwxrwx 3 root root 4096 Sep 15 21:25 . drwxrwxrwx 22 root root 4096 Sep 7 22:37 .. drwxr-xr-x 2 root root 49152 Sep 15 21:25 lost+found [root@pacman mnt]# mkdir -m 777 /mnt/HDB2/PICTURES mkdir: cannot create directory `/mnt/HDB2/PICTURES': Read-only file system [root@pacman mnt]#