Gracias por la respuesta: yo he visto esto en la web de soporte de Seagate:
Reg48bitLBA for Windows XP SP1 and Windows 2000 SP3
Windows XP Service Pack 1 and Windows 2000 Service Pack 3 operating systems, or higher, are required to support ATA disc drives larger than 137GB. The registry setting EnableBigLBA needs to be set after the proper level service pack is installed.
If you use the traditional Microsoft Disk Administrator or Disk Management tools to prepare your drive or you need to check the status of the EnableBigLBA registry setting, you can use the Ontrack Reg48bitLBA utility to set or confirm if the setting is enabled.
Yo quiero intentar NO instalar el SP2 si no es necesario. Pensáis que esto funcionará o solo es para los PATA (ATA IDE normales)?