On Fri, 1 Mar 2002, Ketan Mukadam wrote: > Actually what you have written, that stuff i already know, but what i wanted to > know is that where the real-mode is used except bootstrapping. Once ur OS gets > booted the processor is switched in protected mode.[ This is true of Linux ] Now > in which situations it returns to real-mode or is it that it never goes into > real-mode after booting?? mmm it would be possible, but you'd have a hell of a time getting things back to a sane state if you really go down to real mode and switch back to pmode, essentially you'd have to reload your OS. AFAIK no OS does this. If you wanna see a real mode transition in Linux, check out: linux/arch/i386/kernel/process.c:machine_real_restart() Regards, Zwane -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ IRC Channel: irc.openprojects.net / #kernelnewbies Web Page: http://www.kernelnewbies.org/
