The article [Q303013] describes the Windows XP Service Pack 1 (SP1) 48-bit Logical Block Addressing (LBA) support for ATA Packet Interface (ATAPI) disk drives that can enable the capacity of your hard disk to exceed the current 137 gigabyte (GB) limit.
Note: "Q331958" explains that if your computer has an ATA Packet Interface (ATAPI) hard disk that is larger than 137 gigabytes (GB), 1) your computer may restart instead of resuming from hibernation, 2) you may experience hard disk corruption when your computer enters either standby or hibernation, and 3) you may experience hard disk corruption when Windows XP writes a memory dump file as a result of an unrecoverable Windows error (or Stop error), unless the system is subsequently patched.
recently installed a 160GB western digital hard drive to my pc. BIOS recognised the correct type and size, so i proceeded to install Windows XP pro as normal... format, copy, install etc. everything appeared to be normal until i checked the hard drive space under windows only to find it recognized as a 127GB total size drive. what is the problem and how can i fix this?? i tried updating to the windows xp service pack 1 but this did nothing

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