However, in my experience, this has never been the case with external
drives, which a lot of his seem to be (I don't remember if this one
was). This was a BIOS limitation only evident on EIDE internal drives.

On Jan 26, 2008 10:03 PM, Tom Piwowar <[EMAIL PROTECTED]> wrote:
> >drive Z:  thought it was 400 GB, but My Computer reports it as 200 GB.
>
> Writing data beyond 256GB could cause this. I have read about situations
> where high-capacity drives are installed on computers with disk
> controllers that do not have an address space wide enough to span the the
> disk's capacity. Everything is fine as long as you don't need to write to
> a part of the drive that needs the missing high address bits. When you
> finally get around to needing the last bits you have a problem when the
> drive starts to overwrite lower addresses because that high bit is not
> being communicated to the drive. This results in sudden data loss.


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