I'm on Ubuntu w/VM Workstation, not Windoze

But I think I'm missing something here, as none of these options work..

For one, I do have space to expand the disk...

/utl/vmware/Windows XP Professional$ df -h .

Filesystem Size Used Avail Use% Mounted on
/dev/sdb14 21G 14G 6.1G 70% /utl

/utl/vmware/Windows XP Professional$ vmware-vdiskmanager -x 20Gb "Windows XP Professional.vmdk"
Using log file /tmp/vmware-root/vdiskmanager.log
Failed to expand the disk 'Windows XP Professional.vmdk': There is not
enough space on the file system for the selected operation (14).

What am I doing wrong ?

My device is sda14...

size is 21g

used is 14

available is 6.x

Based on what Ron said

"So the first attempt you did, "-x 5 GB", was incorrect because it says
to increase the current 11GB disk to a 5GB disk. Not going to work.
However the second attempt, "-x 15 GB", is correct but failed because
vmware-vdiskmanager cannot find enough space on the host disk to
perform the expansion. So I still recommend that you either free up a
large chunk of disk space on the host disk or get another disk. And I
still recommed adding the additional space as a second disk rather than
trying to expand the existing vmdk file since you won't need to mess
about with changing the partition table of the guest vm's C: drive (or
does Windows 2003 have that capabiity built into it?)."

So, the size of the disk is 21G, out of which I've used 14G and I've 6G more. All I'm trying to do is increase the 14G to 20G if possible.

vmware-vdiskmanager -x 20GB "Windows XP Professional.vmdk" I was under the impression it'd "increase" the 14G to 20G "not" add 20G more.

Am I wrong ?

If so, how do I add 6G more ?

Thanks much!