GRUB often replaces the original MBR code when someone 'tries out' Linux for the first time.
The MBR contains GRUB stage 1 - load the next stage of GRUB (which may reside physically elsewhere on the disk) Stage 1 can either load Stage 2 directly, or it can load stage 1.5: GRUB Stage 1.5 is located in the first 30 kilobytes of hard disk immediately following the MBR. Stage 1.5 loads Stage 2. When GRUB Stage 2 receives control, it presents an interface to the user in order to select which operating system to boot. "Where do you want to install the boot loader?" 1) "Master Boot Record (MBR)" - means about 8 KiB (16 sectors) of 'stage2' code will also be written into the first track 2) "First sector of boot partition - may or may not write any of GRUB's code into the MBR sector! GRUB can function as either a Master Boot Record (when installed in the first sector of a PC's /dev/hda device; that is, its Primary, Master hard disk) or as a Linux install's Volume boot record (VBR) GRUB makes sure not to use any of the bytes between offsets 1B8h and 1BBh because they're used by Microsoft® Windows™ NT/2000/XP/2003 as the NT Drive Serial Number; which in our example above is the four-byte WORD E1A8E1A8h. Read more----------- http://www.geocities.com/thestarman3/asm/mbr/GRUB.htm -- -- Regards, Prasad.S.R "Many will call me an adventurer - and that I am, only one of a different sort: one of those who risks his skin to prove his platitudes." -- CHE --~--~---------~--~----~------------~-------~--~----~ "Freedom is the only law". "Freedom Unplugged" http://www.ilug-tvm.org You received this message because you are subscribed to the Google Groups "ilug-tvm" group. To post to this group, send email to ilug-tvm@googlegroups.com To unsubscribe from this group, send email to ilug-tvm-unsubscr...@googlegroups.com For details visit the website: www.ilug-tvm.org or the google group page: http://groups.google.com/group/ilug-tvm?hl=en -~----------~----~----~----~------~----~------~--~---
