When I was setting up the drive, I encountered the problem that Windows 2000 was not able to format the 180 GB drive with FAT32. In this test situation, it was easier to create a 100% NTFS partition in Windows 2000 without any problems and that's what we used for our benchmark setup. You can use the commands Fdisk and Format in Windows 98 to create a FAT32 partition that can be read by Windows 2000, but Fdisk will report it as being a maximum of 40 GB (total capacity modulo 64). You'll have to enter '100%' to create a full sized partition. Tom addressed the Fdisk issue in Special Problem - FDISK on Arrays Larger than 64 GB .

Hard disk manufacturers specify disk size in 1 GB = 1 Billion Bytes (10^9). The binary logic of operating systems instead defines 1 GB = 2^30 = ~1.073 * 10^9. This difference always results in a lower reported size. In the case of the Barracuda the 181.6 GB calculate into 168 GB formatted size.