um, brain fart.
come to think of it - the root Directory is the main "holder" directory for ANY volume letter. that then contains all the dir/sub dir.
sorry, my bad
and the answer is still the same - it doesnt matter for data only hdd - but why?
FWIW - I always make O/S only partitions 4.5 (phoney) 4.3(real) GB so that it can be backed up to a single DVD with Acronis true image
Then a 1.5GB partition for swap file (that can be quickly defragged)
So, on a triple boot install on Seagate 200GB IDE, I would have
C:Win 98SE 4.3GB
D:WinXP SP1 4.3GB
E: WinXP SP2 4.3GB
F: Swap 1.5
G: Swap 1.5
H: Swap 1.5
I Apps 90GB
J: Data 90GB
With this I am stuck with FAT32 to see everything.
All apps must be installed on all three O/S for correct registry entries to be useable on all 3