If you are looking for an external hard disk drive solution that can be used interchangeably between Windows XP, Windows 98, Mac OS and Linux, there is only one way to prepare the hard disk and SwissKnife does it for you. You can create, delete partitions and format your IDE hard disk drives in one smooth, simple process. While the product has been tested up to 400GB, it should support hard disks of up to 2048GB.