I am attempting to convert an old Dell with preactivated Windows Home-XP PM (physical machine) into a VirtualBox VM. My VM boots correctly, but then stops with the message that says I must activate XP before logging on. After searching various forums, I first tried to modify the VM using information I obtained from the PM using dmidecode. I used VBoxManage to setextradata as follows: "VBoxInternal/Devices/pcbios/0/Config/DmiBIOSVendor" "Dell Computer Corporation" "VBoxInternal/Devices/pcbios/0/Config/DmiBIOSVersion" "A03" "VBoxInternal/Devices/pcbios/0/Config/DmiBIOSReleaseDate" "12/07/2001" "VBoxInternal/Devices/pcbios/0/Config/DmiSystemVendor" "Dell Computer Corporation" "VBoxInternal/Devices/pcbios/0/Config/DmiSystemProduct" "Dimension 8**0" "VBoxInternal/Devices/pcbios/0/Config/DmiSystemSerial" "88***11" "VBoxInternal/Devices/pcbios/0/Config/DmiSystemUuid" "44***4C-3800-1**4-8**6-*****63131" This attempt did not resolve the license issue, so it appears that the Dell is looking further into the machine bios for additional SLP information. I then ran a OEMBIOS test, which resulted in: F: DELL Inc OEMBIOS.CAT CRC32=B6F0EEFD F: DELL Inc OEMBIOS.CAT CRC32=63875D1F At this point, I am not sure what to try next: 1) I can extract the DELL bios using Uniflash. Is there someway to use SLP data from the DELL Bios to modify the VirtualBox Bios with: "VBoxInternal/Devices/pcbios/0/Config/BiosRom" 2) Will XP reactivate if I provide the Key obtained from the Dell XP Registry. (I wouldn't think so since this was a preactivated XP.) 3) I can't be the first guy to virtualize an existing Dell XP machine ... is this just a Virtualbox issue? Maybe use a different VM Host that can use the existing Dell Bios image?