add HFS partition to NTFS ext hdd?

i have a 500 gb external hdd formatted as NTFS, and it unfortunately holds 300+ gb of data.

i need to add a HFS partition as some apps i use need to write to HFS.

is there a way to add a HFS partition to the external hdd?

if it matters, the hdd enclosure does firewire 400 and 800, usb 2 and e-sata.

 

i'm moving as much data as possible out of the ext hdd now.

think i will probably try to add a FAT32 partition using windows, and see if leopard would convert the FAT32 to HFS+.

thoughts?

 

good news

i used Gparted and tested it on an usb thumb drive. formatted it to NTFS, and shrunk it down. created a FAT32 partition out of the remaining space, booted into leopard and had disk utility turn the FAT32 partition into HFS+.

when mounted, they appear as two volumes in leopard.

i've tried the FAT32 partition with the apps that couldn't write to NTFS and they still don't work. converted it to HFS+ and all's good.

applied the steps above to my hdd (not before backing up almost everything except for the less important stuff) and shrunk the NTFS partition to 400 GB. created a FAT32 partition out of the remaining space. the resize and partition creation took about an hour and was all in one job, though i didn't time it. back to leopard, and disk utility did its thing.

after the HFS+ partition is created, the NTFS volume name turned into "disk2s1", and i panicked a little thinking that it wiped off the NTFS partition as well. however, the original volume name still shows on the desktop.

although i backed up the important stuff, losing the 60 GB worth of stuff would not be fun. if unlike me, you have the space available, you should back up everything.

anyway, when i opened up the NTFS volume in leopard, the files appear intact. tried running the files and they worked fine.

hope this helps others.

edit: the above post got to it earlier than me! but yes, do create a FAT32 partition for leopard to erase and convert.

 

GParted maintains your data during a resize, so you can shrink your FAT32 partition and create another FAT32 partition for disk utility to convert to HFS+ to.

the only caveat about GParted is that it doesn't seem to detect my firewire 800 connected ext hdd. but it was simple to just switch to using my ext hdd's usb connection instead.