why my drive is in visible in window7?

[toqeer]

1-i installed window vista and window7 too. but when i open the window7 the drive in which vista is installed is not visible but when i open vista then i see the drive in which w7. i dont know why?
will it is due to formate of disk?
2-tell me difference between fat, fat32, ntfs type?

[sakumar79]

1. Open Disk Management from Control Panel, select the partition with Vista drive, right click and choose to assign drive letter
2. FAT (or FAT16), FAT32 and NTFS are successive drive formats... NTFS is the latest from MS and is supported by Win NT, 2k, XP, Vista and 7. FAT and FAT32 are older versions (FAT is from DOS ages and FAT32 is from Win 9x ages)... NTFS is the most efficient and has more security features compared to FAT...

Arun