Press del during boot= (AMI, Award).
Press Esc during boot= Toshiba.
Press F1 during boot= (Toshiba; Phoenix; Late model PS/1 Value Point and 330s).
Press F2 during boot = (NEC).
Press F10 when square in top RH corner of screen= (Compaq).
Press Ins during boot=IBM PS/2 with reference partition.
Shift Ctrl Alt + Num Pad del= - Olivetti PC Pro.
Ctrl Alt ? =some PS/2s, such as 75 and 90.
Ctrl-Esc = Misc Puters
Ctrl Ins= some PS/2s when pointer at top right of screen.
Press reset twice= some Dells.
Ctrl Alt Enter= Dell.
Ctrl Alt Esc=AST Advantage, Award, Tandon.
Ctrl Alt + =Misc Puters
Ctrl Alt S= Phoenix.
Ctrl Alt Ins= (Zenith, Phoenix)
Ctrl S =(Phoenix).
Ctrl Shift Esc= Tandon 386.