How To: Enable 48-Bit LBA Support For Large Hard Drives In Windows XP
By default Windows XP and earlier versions of Microsoft’s Windows operating systems do not support 48-bit Logical Block Addressing (LBA) for drives larger than 137GB as defined in the ATA/ATAPI 6.0 specification.
Your system must meet the following requirements to use 48-bit LBA ATAPI support:
- A 48-bit LBA compatible BIOS(48-bit LBA capable motherboard OR 48-bit LBA capable add-on IDE controller)
- A hard disk that has a capacity that is greater than 137 GB.
- A computer with Windows XP SP1 installed.
Enable 48-bit LBA support for large hard drives in Windows XP:
- Launch the Windows XP Registry Editor (Regedit.exe).
- Navigate to the registry subkey:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Atapi\Parameters\
- Create a new DWORD value, or modify the existing value called “EnableBigLba“.
- Set the “EnableBigLba” registry value to 1 in that registry key.
- Close the Registry Editor and restart Windows.
Warning: Modifying the Windows registry can cause serious damage to your Windows Operating System.It is better to backup your Windows registry data before making any changes. Tomstricks.com is not responsible for any changes you may make to your system.
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Written by Tony on January 8th, 2009 with
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