Having problems installing a new(old?) HDD

[VeganFreak]

ok...here i have a preety weird problem
i have two computers. recently, i decided that i would just stick the HDD from my old computer into the new one. so i pop it it.....yes i set it to slave before i installed it. well the good news is that it recognizes it. it sees it, but here is where the problem comes along. it says its has zero storage. zero total zero free. when i try to explore/open it asks if i want to format. i really don't want to since i have a ton of stuff on there. anyone know what the hell is going on? why is it recognizing its there yet not letting me see the files.

both computers are less than two years old i basically want to have more storage on one pc, and have all my files on there at the same time.

both systems are windows XP HOME edition

anyone could offer any help would appreciate it so much

EDIT: DOES ANYONE CHECK THE PC FORUM ANYMORE?? come on guys...3 days and counting

[The_Only]

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Source: http://www.ps3fanboy.com/2008/03/09/rum ... -singstar/