I was wanting to upgrade the hard drives in my desktop computer, and noticing all the big hard drives advertised by BestBuy, CompUSA, etc. I decided I would do some research to see what the limit was under 98SE. Without extensive research it seems that you can go to about 127Gb partitions if you fix a couple of 98SE problems. It may be the same under XP. I don't think I'm ready to go to NTFS. So if you buy a 300Gb hard drive I guess you have to either partition it into multiple smaller drives or do some other tricks to access all of it.