Personally I have my portable harddisk formatted in FAT32 and that runs great on as well Windows Vista, Windows XP and MacOS X. (Tiger)
NTFS is as far as I know a protected partition type of which only MicroSoft appears to have the rights. Reading is allowed, writing not. Linux also ain't able to write to NTFS partitions as far as my info goes.
But FAT32, all my memory sticks, portable harddrives and stuff are formatted in that and as well Mac as Windows do read it and write it.
NTFS is as far as I know a protected partition type of which only MicroSoft appears to have the rights. Reading is allowed, writing not. Linux also ain't able to write to NTFS partitions as far as my info goes.
But FAT32, all my memory sticks, portable harddrives and stuff are formatted in that and as well Mac as Windows do read it and write it.