Had a problem with 160 gig drive Windows has a wall at 137 gig so to fix it this is what I did.
edit the registry at
HKEY_LOCAL_MACHINE\SYSTEM\CURRENTCONTROLSET\SERVICES\\ATAPI\PARAMETERS
then make a new DWORD and call it enablebiglba then modify it and give it a value of 1 reboot. then use partition magic or if Windows XP go to administrative tools in control panel and then go to computer management then disk management there you will see unallocated space format it and resize it all
edit the registry at
HKEY_LOCAL_MACHINE\SYSTEM\CURRENTCONTROLSET\SERVICES\\ATAPI\PARAMETERS
then make a new DWORD and call it enablebiglba then modify it and give it a value of 1 reboot. then use partition magic or if Windows XP go to administrative tools in control panel and then go to computer management then disk management there you will see unallocated space format it and resize it all