Since I'm still waiting for hard disk prices to go down ??? I decided to temporarily increase my hard disk space by installing an old 2.5" hdd. The first trick would be opening the case of this Fujitsu Siemens Esprimo. Although I did notice the tabs on both sides of the case, it took me a while to figure out I had to slide the cover forward instead of back (i.e. away from the motherboard connectors).
After that I was not suprised to find there was no mounting point for 2.5" hdd, but I just drilled 4 holes in the bottom of the mounting plate for the optical drive and used motherboard spacers to secure the hdd.
The server booted properly and "df -h" shows 71G size, 8.6G available. Using "fdisk -l" (with sudo) I can indeed now see two disks:
/dev/sda: 80.0 GB
and
/dev/sdb: 120.0 GB
the latter has 3 "windowie" partitions (i.e. NTFS and W95 Extended), so I'm pretty sure I can safely format that one.
sudo fdisk /dev/sdb
p prints the "windowie" partitions again
I dynamically remove these and add a new primary partition
Now I use webmin > hardware > partitions on local disks > edit partition to
create an ext3 filesystem
mount it to /mnt/disk120g (I also choose "save and mount on boot")
Now "df -h" also shows /dev/sdb1 111G size, 105G available!
Finally, I create a symlink:
ln -s /mnt/disk120g/ temp120g