On Wed, 27 Feb 2002 16:55:00 +0100 "Berge, Harry ten" <berge@hitt.nl> wrote:
It is not a problem to create a new bigger initrd with the wanted modules (SCSI, aic7xxx), but now I have to make a new, bigger bootflop. I tried 2.88m, but I can't get the image to be bootable. It sounds all 'fuzzy' so here it is:
Here is something I pulled off of a newsgroup. Look down towards the end. ... It is simple then to make a bootable CD. First create a file, say "boot.img" which is an exact image of the boot floppu currently in use. There is at least one HOWTO on making bootable floppies. If you have a bootable floppy handy, you can make a boot image with the command dd if=/dev/fd0 of=boot.img bs=10k count=144 assuming the floppy is in the A: drive. Place this image somewhere in the hierarchy which will be the source for the iso9660 filesystem. It is a good idea to put all boot related files in their own directory ("boot/" under the root of the iso9660 fs, for example), but this is not necessary. One caveat - Your boot floppy MUST load any initial ramdisk via LILO, not the kernel ramdisk driver! This is because once the linux kernel starts up, the BIOS emulation of the CD as a floppy disk is circumvented and will fail miserably. LILO will load the initial ramdisk using BIOS disk calls, so the emulation works as designed. The "El Torito" specification requires a "boot catalog" to be created as ll. This is a 2048 byte file which is of no interest except it is required. My patches to mkisofs will cause it to automatically create the boot catalog. You must specify where the boot catalog will go in the iso9660 filesystem. Usually it is a good idea to put it the same place as the boot image, and a name like "boot.catalog" seems appropriate. So we have our boot image in the file "boot.image", and we are going to put it in the directory "boot/" under the root of the iso9660 filesystem. We will have the boot catalog go in the same directory with the name "boot.catalog". The command to create the iso9660 fs in the file bootcd.iso is then mkisofs -b boot/boot.img -c boot/boot.catalog -o bootcd.iso . The -b option specifies the boot image to be used (note the path is relative to the root of the iso9660 disc), and the -c option is for the boot catalog file. Now burn the CD and its ready to boot! -- $|=1;while(1){print pack("h*",'75861647f302d4560275f6272797f3');sleep(1); for(1..16){for(8,32,8,7){print chr($_);}select(undef,undef,undef,.05);}}