Hello,

could it be that your hard drives are built in a RAID? This would mean that
your data is mirrored onto the second drive for data security and therefore
there are only 250 GB available.

Greetings,
P. Di Stolfo

<adrian7886******.co.uk> schrieb im Newsbeitrag
news:1182449231.151789.3840@m36g2000hse.googlegroups.com...[color=blue]
>I have two identical Western Digital SATA hard drives both 250GB. The
> PC knows both devices are there in the bios and device manager but
> when viewed from my computer it only shows a single SATA drive with
> 250gb storage ??
>
>
> Vista was installed as a new install not upgrade.
>[/color]