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author Patrick J Volkerding <volkerdi@slackware.com>2009-08-26 10:00:38 -0500
committer Eric Hameleers <alien@slackware.com>2018-05-31 22:41:17 +0200
commit5a12e7c134274dba706667107d10d231517d3e05 (patch)
tree55718d5acb710fde798d9f38d0bbaf594ed4b296 /usb-and-pxe-installers/usbimg2disk.sh
downloadcurrent-5a12e7c134274dba706667107d10d231517d3e05.tar.gz
current-5a12e7c134274dba706667107d10d231517d3e05.tar.xz
Slackware 13.0slackware-13.0
Wed Aug 26 10:00:38 CDT 2009 Slackware 13.0 x86_64 is released as stable! Thanks to everyone who helped make this release possible -- see the RELEASE_NOTES for the credits. The ISOs are off to the replicator. This time it will be a 6 CD-ROM 32-bit set and a dual-sided 32-bit/64-bit x86/x86_64 DVD. We're taking pre-orders now at store.slackware.com. Please consider picking up a copy to help support the project. Once again, thanks to the entire Slackware community for all the help testing and fixing things and offering suggestions during this development cycle. As always, have fun and enjoy! -P.
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+#!/bin/sh
+# $Id: usbimg2disk.sh,v 1.2 2009/05/14 10:29:38 eha Exp eha $
+#
+# Copyright 2009 Eric Hameleers, Eindhoven, NL
+# All rights reserved.
+#
+# Redistribution and use of this script, with or without modification, is
+# permitted provided that the following conditions are met:
+#
+# 1. Redistributions of this script must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+# EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# Paranoid as usual:
+set -e
+
+showhelp() {
+ echo "# "
+ echo "# Purpose: to use the content of Slackware's usbboot.img and transform"
+ echo "# a standard USB thumb drive with a single vfat partition"
+ echo "# into an alternative USB boot device for the Slackware installer."
+ echo "# "
+ echo "# Reason: some computers refuse to boot from a USB thumb drive if it was"
+ echo "# made bootable by dumping 'usbboot.img' onto it."
+ echo "# "
+ echo "# Your USB thumb drive may contain data!"
+ echo "# This data will *not* be overwritten, unless you have"
+ echo "# explicitly chosen to format the drive by using the '-f' parameter."
+ echo "# "
+ echo "# $(basename $0) accepts the following parameters:"
+ echo "# -h|--help This help"
+ echo "# -f|--format Format the USB drive before use"
+ echo "# -i|--infile <filename> Full path to the usbboot.img file"
+ echo "# -l|--logfile <filename> Optional logfile to catch fdisk output"
+ echo "# -o|--outdev <filename> The device name of your USB drive"
+ echo "# -u|--unattended Do not ask any questions"
+ echo "# "
+ echo "# Example:"
+ echo "# "
+ echo "# $(basename $0) -i ~/download/usbboot.img -o /dev/sdX"
+ echo "# "
+}
+
+reformat() {
+ # Commands to re-create a functional USB stick with VFAT partition:
+ # Only parameter: the name of the USB device to be formatted:
+ TOWIPE="$1"
+
+ # Sanity checks:
+ if [ ! -b $TOWIPE ]; then
+ echo "*** Not a block device: '$TOWIPE' !"
+ exit 1
+ fi
+
+ # Wipe the MBR:
+ dd if=/dev/zero of=$TOWIPE bs=512 count=1
+
+ # create a FAT32 partition (type 'b')
+ /sbin/fdisk $TOWIPE <<EOF
+n
+p
+1
+
+
+t
+b
+w
+EOF
+
+ # Format with a vfat filesystem:
+ /sbin/mkdosfs -F32 ${TOWIPE}1
+}
+
+makebootable() {
+ # Only parameter: the name of the USB device to be set bootable:
+ USBDRV="$1"
+
+ # Sanity checks:
+ if [ ! -b $USBDRV ]; then
+ echo "Not a block device: '$USBDRV' !"
+ exit 1
+ fi
+
+ # Set the bootable flag for the first (and only...) partition:
+ /sbin/sfdisk $USBDRV -N1 <<EOF
+,,,*
+EOF
+}
+
+# Parse the commandline parameters:
+if [ -z "$1" ]; then
+ showhelp
+ exit 1
+fi
+while [ ! -z "$1" ]; do
+ case $1 in
+ -f|--format)
+ REFORMAT=1
+ shift
+ ;;
+ -h|--help)
+ showhelp
+ exit
+ ;;
+ -i|--infile)
+ USBIMG="$(cd $(dirname $2); pwd)/$(basename $2)"
+ shift 2
+ ;;
+ -l|--logfile)
+ LOGFILE="$(cd $(dirname $2); pwd)/$(basename $2)"
+ shift 2
+ ;;
+ -o|--outdev)
+ TARGET="$2"
+ TARGETPART="${TARGET}1"
+ shift 2
+ ;;
+ -u|--unattended)
+ UNATTENDED=1
+ shift
+ ;;
+ *)
+ echo "Unknown parameter '$1'!"
+ exit 1
+ ;;
+ esac
+done
+
+# Before we start:
+[ -x /bin/id ] && CMD_ID="/bin/id" || CMD_ID="/usr/bin/id"
+if [ "$($CMD_ID -u)" != "0" ]; then
+ echo "You need to be root to run $(basename $0)."
+ exit 1
+fi
+
+# Prepare the environment:
+UNATTENDED=${UNATTENDED:-0} # unattended means: never ask questions.
+REFORMAT=${REFORMAT:-0} # do not try to reformat by default
+LOGFILE=${LOGFILE:-/dev/null} # silence by default
+
+# Sanity checks:
+if [ -z "$TARGET" -o -z "$USBIMG" ]; then
+ echo "*** You must specify both the names of usbboot.img and the USB device!"
+ exit 1
+fi
+
+if [ ! -f $USBIMG ]; then
+ echo "*** This is not a useable file: '$USBIMG' !"
+ exit 1
+fi
+
+if [ $REFORMAT -eq 0 ]; then
+ if ! /sbin/blkid -t TYPE=vfat $TARGETPART 1>/dev/null 2>/dev/null ; then
+ echo "*** I fail to find a 'vfat' partition: '$TARGETPART' !"
+ echo "*** If you want to format the USB thumb drive, add the '-f' parameter."
+ exit 1
+ fi
+else
+ if [ ! -b $TARGET ]; then
+ echo "*** Not a block device: '$TARGET' !"
+ exit 1
+ fi
+fi
+
+if mount | grep -q $TARGETPART ; then
+ echo "***"
+ echo "*** Please un-mount $TARGETPART first, then re-run this script!"
+ echo "***"
+ exit 1
+fi
+
+# Check for prerequisites:
+if [ ! -r /usr/lib/syslinux/mbr.bin -o ! -x /usr/bin/syslinux ]; then
+ echo "This script requires that the syslinux package is installed!"
+ exit 1
+fi
+
+# Show the USB device's information to the user:
+if [ $UNATTENDED -eq 0 ]; then
+ [ $REFORMAT -eq 1 ] && DOFRMT="format and " || DOFRMT=""
+
+ echo ""
+ echo "# We are going to ${DOFRMT}use this device - '$TARGET'."
+ /sbin/fdisk -l $TARGET | while read LINE ; do echo "# $LINE" ; done
+ echo ""
+
+ echo "*** ***"
+ echo "*** If this is the wrong drive, then press CONTROL-C now! ***"
+ echo "*** ***"
+
+ read -p "Or press ENTER to continue: " JUNK
+ # OK... the user was sure about the drive...
+fi
+
+# Initialize the logfile:
+cat /dev/null > $LOGFILE
+
+# If we need to format the USB drive, do it now:
+if [ $REFORMAT -eq 1 ]; then
+ echo "--- Formatting $TARGET and creating VFAT partition..."
+ if [ $UNATTENDED -eq 0 ]; then
+ echo "--- Last chance! Press CTRL-C to abort!"
+ read -p "Or press ENTER to continue: " JUNK
+ fi
+ ( reformat $TARGET ) 1>>$LOGFILE 2>&1
+fi
+
+# Create a temporary mount point for the image file:
+mkdir -p /mnt
+MNTDIR1=$(mktemp -d -p /mnt -t img.XXXXXX)
+if [ ! -d $MNTDIR1 ]; then
+ echo "*** Failed to create a temporary mount point for the image!"
+ exit 1
+else
+ chmod 700 $MNTDIR1
+fi
+
+# Create a temporary mount point for the USB thumb drive partition:
+MNTDIR2=$(mktemp -d -p /mnt -t usb.XXXXXX)
+if [ ! -d $MNTDIR2 ]; then
+ echo "*** Failed to create a temporary mount point for the usb thumb drive!"
+ exit 1
+else
+ chmod 700 $MNTDIR2
+fi
+
+# Mount the image file:
+mount -o loop $USBIMG $MNTDIR1
+
+# Mount the vfat partition
+mount $TARGETPART $MNTDIR2
+
+# Check available space:
+USBFREE=$(df -k $TARGETPART | grep "^$TARGETPART" |tr -s ' ' | cut -d' ' -f4)
+IMGSIZE=$(du -k $USBIMG | cut -f1)
+echo "--- Available free space on the the USB drive is $USBFREE KB"
+echo "--- Required free space: $IMGSIZE KB"
+
+# Exit when the image size appears larger than available space:
+if [ $IMGSIZE -gt $USBFREE ]; then
+ echo "*** The USB thumb drive does not have enough free space!"
+ # Cleanup and exit:
+ umount -f $MNTDIR1
+ umount -f $MNTDIR2
+ rmdir $MNTDIR1 $MNTDIR2
+ exit 1
+fi
+
+# Copy files to the USB disk in it's own subdirectory '/syslinux'
+echo "--- Copying files to the USB drive..."
+mkdir -p $MNTDIR2/syslinux
+cp -a $MNTDIR1/* $MNTDIR2/syslinux/
+rm -f $MNTDIR2/syslinux/ldlinux.sys
+
+# Unmount everything:
+umount -f $MNTDIR1
+umount -f $MNTDIR2
+
+# Remove the temporary directories:
+rmdir $MNTDIR1 $MNTDIR2
+
+# Run syslinux and write a good MBR:
+echo "--- Making the USB drive '$TARGET' bootable..."
+( makebootable $TARGET ) 1>>$LOGFILE 2>&1
+/usr/bin/syslinux -s -d /syslinux $TARGETPART 1>>$LOGFILE 2>&1
+dd if=/usr/lib/syslinux/mbr.bin of=$TARGET 1>>$LOGFILE 2>&1
+
+# THE END