Many of the PC's here at CCRMA boot more than one operating system. Here are the details on how to exit graciously from one of them and arrive safely to the other...
Rebooting: the short recipe
from NEXTSTEP?
press simultaneously <RIGHT ALT> and <NUMLOCK> key and then type "r".
from Linux?
press simultaneously <LEFT CONTROL>, <LEFT ALT> and <BACKSPACE>, when the screen clears press simultaneously <LEFT CONTROL>, <LEFT ALT> and <DEL>
wait for the LILO (Linux Bootstrap Loader) prompt which will appear after the BIOS screen
type "next" (to boot NextStep) or "linux" (to boot Linux) followed by <ENTER>
if you do nothing the computer will boot the default OS in 5 seconds
if you type "?" you will get a listing of boot options
Read on for more details...
Want to be a model CCRMA denizen?
The nicest thing you can do is to login into the currently running operating system and make sure no one is using the machine remotely before rebooting (by typing finger in a terminal, for example). Of course you can just go ahead and reboot without checking, but sooner or latter it will happen to you that you are logged in remotely and the connection dissapears without warning...
Booting a PC from NextStep into Linux
After you made sure nobody is using the computer remotely simultaneously press the <RIGHT ALT> key and the <NUMLOCK> key. That will bring up the small NMI interrupt panel. Type <r> to restart the machine. After the BIOS finishes its startup sequence the display will clear and you will see the name "LILO" appearing in the empty screen (LILO is the Linux bootstrap loader). You have 5 seconds to type "linux" followed by <ENTER>.
Booting a PC from Linux into NextStep
There is at present no elegant way that I know off of rebooting Linux while you are logged in... So the first step is to logout. Then restart the X windows server by pressing simultaneously <LEFT CONTROL>, <LEFT ALT> and <BACKSPACE>. The xdm login window will dissapear, and as soon as that happens press simultaneously <LEFT CONTROL>, <LEFT ALT> and <DEL> (in the numeric keypad). After the BIOS finishes its startup sequence the display will clear and you will see the name "LILO" appearing in the empty screen (LILO is the Linux bootstrap loader). You have 5 seconds to type "next" followed by <ENTER>.