How do you remove windows xp professional on the OS choice in startup?

To remove Windows XP Professional from the OS choice menu at startup, you need to edit the Boot Configuration Data (BCD). Boot your computer and, when the menu appears, select the Windows operating system you want to keep, then press Windows + R to open the Run dialog. Type msconfig and press Enter. In the Boot tab, you can select the Windows XP entry and click "Delete" to remove it from the boot menu. Alternatively, you can use the command prompt with the command bcdedit to modify the boot entries.