I'm trying to install Windows Vista on an HP dc7800 USFF with a recently 5-pass wiped 250 GB Hitachi SATA HDD.
I've created bootable usb installation media with a vista .iso using Novicorp Win2Flash (real easy and recommended software!)
However, when I try to install Vista, I can only get to the dialog box that allows you to select the partition. Only one partition is visible, and it's approximately the right size (233 GB), but it gives the error message:
"This computer's hardware may not support booting to this disk."
- using diskpart to re-create the partition
- using both bootsect and /fixboot
- Re-formatting the HDD NTFS using another workstation.
- Mounting the HDD as a secondary on another system, and using the same .iso to install Vista on it; This worked (The drive is not DOA), but the resulting installation wasn't bootable on the dc7800.
- Removing the USB when selecting the drive
The drive is SATA and doesn't have any jumpers.
My BIOS doesn't have the option to change AHCI settings; I think it <i>may</i> be automatic
I'm going to take another stab in a day or two. Any suggestions would be helpful.
I should add that I was not being very systematic about the order in which I tried these and various other fixes. If anyone wants to just define the usual order of steps I may need to follow to prepare this HDD for OS installation (and common mis-steps), that would be great too.