Replacing Failed 1TB drive with a smaller disk

Hi,
I had nwsp2 (stock firmware) who's drive has failed.
I don't have any spare large disks atm, and I was wondering if anyone has successfully fitted a smaller disk.
The one I have spare atm is 160GB.
Is there any reason I would have problems installing FVDW-SL?
Thanks
Rafe
I had nwsp2 (stock firmware) who's drive has failed.
I don't have any spare large disks atm, and I was wondering if anyone has successfully fitted a smaller disk.
The one I have spare atm is 160GB.
Is there any reason I would have problems installing FVDW-SL?
Thanks
Rafe