| Code Sample |
#!/bin/bash # Created by Ben Okopnik on Thu Mar 17 23:56:31 EST 2005 # # Many thanks to Fabian Franz, whose original script gave me the idea of # how it's all supposed to work. # # This script creates a boot floppy that passes control to a USB PenDrive # containing a Knoppix CD image. No CDROM, no problem! # # SYSLINUX & PERL must be installed. # (I used Ubuntu 8.04.3 to execute this script, then copied the boot.img # file to a Flash Drive, then used DSL to create the Floppy.) # ############## User configuration section ############################### # Set this to the directory where the Knoppix image lives, or specify the # directory as a command-line argument. KNOPPIX_DIR=${1:-/home/larry/tmp2} ############## End of user config section ############################### abort() { printf "$@\n" exit 1 } clean_exit() { [ -d "$TMPDIR" ] && rm -rf $TMPDIR } # Validation tests [ $UID -ne 0 ] && abort "Root privileges are required to run this script." [ -d "$KNOPPIX_DIR" ] || abort "$KNOPPIX_DIR is not a directory." [ -z "`ls $KNOPPIX_DIR|grep -i 'knoppix.*iso'`" ] && abort "Knoppix image not found in $KNOPPIX_DIR." # Create temp dir, get rid of it on exit TMPDIR=`mktemp -dp /tmp/ make_floppy.XXXXXX` trap "clean_exit" EXIT # Jump into TMPDIR and prepare it for the coming ops ORIG_DIR=$(pwd) cd $TMPDIR mkdir knoppix floppy miniroot old_miniroot # Choose and mount the Knoppix image printf "Please choose one of the following images:\n" select choice in $KNOPPIX_DIR/K*.iso; do break; done mount $choice knoppix -o loop # Decompress the miniroot from the mounted image's boot dir gunzip -c knoppix/boot/isolinux/minirt24.gz > minirt24 # "Back up" and mount the miniroot mv minirt24 minirt24.old mount -o loop minirt24.old old_miniroot # Create the file which will contain the new miniroot; format it as a DOS # FS and mount it dd if=/dev/zero of=minirt24 bs=4M count=1 mke2fs -L "KNOPPIX Miniroot" -b 1024 -N 8192 -O none -F -q -m 0 minirt24 mount -o loop minirt24 miniroot # Copy the USB-related modules from the old miniroot to the new one mkdir -p miniroot/modules/scsi for n in `ls old_miniroot/modules/scsi|egrep 'usb|hci'` do cp old_miniroot/modules/scsi/"$n" miniroot/modules/scsi done # Copy everything except the "scsi" dir from the old miniroot to the new # one rm -rf old_miniroot/modules/scsi cp -af old_miniroot/* miniroot/ # Unmount both umount old_miniroot umount miniroot # Compress the miniroot again gzip -9 minirt24 # Create a 1.44MB file which will contain the boot image, format it as a # DOS FS, and mount it. dd if=/dev/zero of=$TMPDIR/boot.img bs=1k count=1440 mkdosfs $TMPDIR/boot.img mount -t msdos boot.img floppy -o loop # Grrr... "mount" weirdness requires waiting, then remounting in order to # have it read-writeable. Perhaps the 'mount' maintainer should get a bug # report? sleep 3 mount floppy -o remount,rw # Copy the required files from Knoppix's boot dir to the image we're building FILES="boot.msg f2 f3 german.kbd isolinux.cfg linux24 logo.16" (cd knoppix/boot/isolinux/; cp -f $FILES $TMPDIR/floppy/) # Copy the new miniroot into it - we're almost done! cp minirt24.gz floppy/ # Rename and tweak the config file to conform to the SYSLINUX usage mv floppy/isolinux.cfg floppy/syslinux.cfg [ -n "$LANGUAGE" ] && perl -pi -e "s/lang=de/lang=$LANGUAGE/g" floppy/syslinux.cfg [ -n "$LANGUAGE" ] && perl -pi -e "s/lang=us/lang=$LANGUAGE/g" floppy/syslinux.cfg # A little cleanup... umount knoppix umount floppy # Make the image bootable! Since it's not an actual device, 'syslinux' is # going to complain - but we're tough and can handle it. syslinux boot.img 2>/dev/null # Put the boot image back where we started cp -i boot.img $ORIG_DIR printf "The boot diskette can now be created with 'dd if=boot.img of=/dev/fd0'.\n" |