I have a compaq evo w8000 desktop and want to install a sata drive instead of the built in scsi drive. I can install windows xp (i've got the sata card drivers and pressed F6 etc, that all works fine) onto it right until the installation reboots, from then on the desktop can't find the sata drive to continue the boot process. I've checked the bios settings for the boot order, but there is no mention of the sata drive. Is there an option somewhere I need to turn on so that it recognises the sata drive. Thanks for any help.

Ok a very very old DT , desk top, ive done this vast times, back long long ago... 17 years old, you use this old of hardware why?

we dont use XP in uSA its VIRUS magnet. horred
and no updates, now, means will get worse each day forward in time. endless...

has built in, SCSI chip. l Ultra160 SCSI and Ultra ATA/100

that ATA means PATA port, not SATA back then.

my wild guess now is that someone put an a new SATA card in the PCI slot, (ive done so vast times)
The BIOS in your machine will never support that.
that means you can not boot to PCI SATA. for sure.b
but wait, the better SATA card works just like a new Adaptec
ultra160 card that if love.
the new SATA card has what is called a BIOS extension ROM on said card, and a new HOT key to access it.
some are CONTROL +A but each maker of said card ,does as he pleases, so READ THERE MANUAL.
you set it to boot o STAT port and it does if port 0 is bootable drive. SATA.
here ill take you now to newegg.com and show you hardware that works.
if you showed a photo of your CARD and # id have answered, 10x better. !!!!!
i cant shop for you, nor pick SATA 1 ,2 or 3 for you.
but here


https://www.newegg.com/Product/Product.aspx?Item=9SIAC0F5KW5808&cm_re=sata_card-_-9SIAC0F5KW5808-_-Product


the big trick here is making sure you relic MOBO
supports the current levels of PCI>
like above
32-bit / 66MHz PCI interface compliant to PCI Rev 2.3
(Backward-compatible with PCI 33

https://www.promise.com/media_bank/Download%20Bank/Datasheet/FT_TX2300_DS091406.pdf


Control +F (see page 11)

https://www.promise.com/media_bank/Download%20Bank/Manual/FastTrak_TX_Series_User_v3.2.pdf


warning, ive run in to big problems using very old relic
motor-boards that use the very old PCI signals and levels.
and will fail on some newers card
I warned you,
the above reads good. for that. (hope )

now my question why use such old hardware.
when goodwill has truck loads of 10year old pCs for $20
why, love of XEON?
id trash it.
find a use desktop with SATA ports, ALL DO now, or scrapped.