USB floppy drives work as designed to install SATA drivers during XP Setup. You push the F6 key when prompted just like NT Setup where you would add SCSI drive

USB floppy drives work as designed to install SATA drivers during XP Setup. You push the F6 key when prompted just like NT Setup where you would add SCSI drivers if needed from a manufacturer's OEM floppy. The OEM (F6) floppy for your specific SATA hardware will contain a fileset with their basic drivers and a TXTSETUP.OEM text file referencing that particular Device ID as well. These floppy contents are often included in a small folder in the manufacturer's full unzipped SATA driver setup files. There are workarounds if you don't have a floppy, see my other message. Any proper BIOS serves USB devices to DOS no differently than legacy hardware, even if it is optional to be enabled when needed. You do have to plug in USB drives, kybd, mouse before turning on the PC but then DOS or W9x can boot from or access them best usually without USB drivers installed in the OS. USB-connected non-80's-legacy devices like webcams would be recognized by W9x only if the USB hub they were on had been properly installed beforehand to the somewhat uncommon USB-enabled W9x, but still would not work unless you had the device-specific W9x USB drivers for windows installation of the exact cam. Cams like this were the kind of thing that actually used windows drivers and would work after windows was booted without having to plug them in beforehand.