you have win xp, any size of laptop eide drive will work. Assuming that is the correct connectivity of your hard drive. Check man. specs.
I have a Toshiba laptop model A20-SP259:
Pentium 4 2.66 MHz. 256 MB RAM
I want to change the hard drive (original went bad) and I need to know what it's the maximum capacity I could buy and wich one do you recommend, the original was 40 GB of capacity (MK4021GAS).
Any help would be really appreciated.