gopan kumar schrieb: > hello all, > > I am relatively new to linux and currently i am trying to understand > bootsect.S code. I have reached midway but am feeling difficulty in > understanding some part of the code (like creating a new disk > parameter table and the portions from loading of setup routines ). It > would be very helpful if i can get any explanation on the bootsect > file, i have searched the net for it but couldn't find any documents > which explain bootsect.S in detail. Can someone give me any helpful > links or advice regarding this ? > > Thanks & regards > > gopkumar > > > ------------------------------------------------------------------------ > Protect your PC - Click here <http://g.msn.com/8HMJEN/2024> for > McAfee.com VirusScan Online -- Kernelnewbies: Help each other learn > about the Linux kernel. Archive: > http://mail.nl.linux.org/kernelnewbies/ FAQ: > http://kernelnewbies.org/faq/ Hello, yes I think I can explain you some of detailes you wanne know. First of all you should read Documentation/i386/boot.txt which you can tread as an introduction to the booting routine on 80x86. Next see http://www.moses.uklinux.net/patches/lki.html (as suggested by kr@cybsft.com) which is generally a very good place for gathering information. If you still have some questions regarding the boot procedure read http://www.phoenix.com/resources/specs-bbs101.pdf (generally BIOS docs can be found at http://www.phoenix.com/en/support/white+papers-specs/default.htm) or just ask me. A description of the fixed disk parameter table (which is stored somewhere in the BIOS area - the pointer at address 0x78 directs you to this place) can be found http://members.tripod.com/~oldboard/assembly/bios_data_area.html (search for INT 1E) and if you follow the link there http://members.tripod.com/~oldboard/assembly/int_1e.html. (the same can be also found at http://www.piclist.com/techref/int/sum.htm) Next I wanne suggest you to read something about Intels architecture http://developer.intel.com/design/pentium4/manuals/index2.htm and something regarding the gnu assembler http://www.gnu.org/manual/gas-2.9.1/html_chapter/as_toc.html. Have fun! // Gerrit -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
