how do I disable write cache when it is greyed out

how do I disable write cache when it is greyed out  using a thinkpad with Xp Pro
Geno55Asked:
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Dr. KlahnPrincipal Software EngineerCommented:
If the system in question has a SATA drive, then this discussion may illuminate the situation.

The option "Enable write caching on the disk" means the drive's internal cache but not the Windows write cache.  If it's grayed out then the SATA driver does not support 'SCSI pass thru', so Windows cannot send the right commands to the disk.
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MikeIT ProfessionalCommented:
This question has been classified as abandoned and is closed as part of the Cleanup Program. See the recommendation for more details.
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