According to this web page:
There's a newer driver that specifically supports Vista (double-check
everything since this is just my best shot). I had a similar problem with
my eSATA drive in an Icy Dock external enclosure. Even though I didn't show
any problems in Device Manager, I wasn't getting a Safely Remove Hardware
prompt from Vista Ultimate. I had to Update the driver from Device Manager
using a new, Vista specific driver to get that capability. Also, make sure
the drive is set up as non-RAID in the BIOS and that you don't install the
RAID driver (again, I'm assuming this is a non-RAID setup -- I don't know
what VIA calls there's, but it should be something besides RAID (I think)).
"Peter Meinl" <email@example.com> wrote in message
>I have a eSATA disk connected to a VIA VT6421 Controller (Driver Date
> Vista does not show the disk when I click on "Safely remove hardware".
> Using Device Manager I tried to set the disk policy to "Optimize for
> removal" but this option is disabled.