I've just ordered a Seagate 500gb portable hard drive. I want it for backing up my 250gb Macbook, storing films and also for exchanging files between computers (Mac and Windows). After reading various posts on the forums I'm planning on making 3 partitions: 1) 300gb for time machine backup. Mac OS X Extended (Is this the same format as HFS+ just a different name?) 2) 15gb for exchanging files. FAT32 3) The remainder for storing films. Mac OS X Extended. Have i got these formats correct and are they suitable? Also, i read that FAT32 is fragile and data can get wiped off it. If this did happen to the FAT32 partition, would it jsut affect that partition or could it damage data in all the partitions? I'm new to this so thanks for any help.