Since I am in a mood of typing a lot.

For finishing the A-level exams, I was given a 160GB Hard drive to replace my 'old', 40GB one. I installed Windows 98 on this new HD and started transfering the important files from the old winchester to the new one. I installed all drives, DirectX, WinZIP and anything else that is needed.
When I tried playing games, I started experiencing crashes. Namely, with Jedi Academy, KotOR, Turok, Jedi Outcast Single player and with FreeSpace 2.
The only games which don't crash are StarCraft, Quake III Arena and Jedi Outcase Multiplayer.
As far as I tried to fix the crashes, I noticed a possible reason why FS2 crashes, but I still haven't tried to fix it (Go to the SCP forum). As for the crashes of the other games, I am completely out of ideas, although I have not tried to fix on any of them. I tried changing the graphics settings but the crashes were still present.
In addition, there are other odd things about this Hard drive, too: Scandisk simply can't scan this HD, implying on having too little memory, Windows says I have 20GB of free space and 140 is taken up

. This is strange, because if I manually measure the size of the files (Select All -> Properties), I can see that only 30GBs are taken up.
One of my class-mates has given me the advice to simply reinstall the whole Windows once again and the problem should disappear, but I would like to know if you know an easier solution. I guess you are not new to problems with huge Hard drives, I was amazed when people posted the size of their winchesters.