If you’re ever installing XP (like say if you needed to upgrading a PC running Vista) and you get to a screen that says no hard drives were found, you’re probably on a fairly new computer. The issue is that it has SATA drives instead of the older IDE type which XP is used to. All you have to do is go into the BIOS (some machines call it setup (usually by hitting the Del key or F2 at startup)) and set the SATA Operation to ATA from AHCI and you’ll be able to install with no issues
WARNING: Do not change this setting unless you are reinstalling your operating system. It will break a working system!!






