I have a portal HDD 250GB which unfortenately was firstly partioned in FAT32 format, so a file must not exceed the limit of 4GB, if I format the disc is there any possibility of converting the partition to NTFS, I know that can be done on a usual HDD wich is connected with ATAPI etc. It is a Western Digital (My book essential) 250GB. I need your help, cause I want to know whether a format should be done or not, and if it would be worth backing up the drive.