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#!/bin/sh
#BLURB="Create a USB Linux boot stick"
if [ -r /usr/lib/setup/setup ]; then
RDIR=/dev/tty4
else
RDIR=/dev/null
fi
TMP=/var/lib/pkgtools/setup/tmp
if [ ! -d $TMP ]; then
mkdir -p $TMP
fi
if [ -z "$1" ]; then
T_PX=/
else
T_PX="$1"
fi
if [ -z "$2" ]; then
ROOT_DEVICE=$(mount | head -n 1 | cut -f 1 -d ' ')
else
ROOT_DEVICE="$2"
fi
if [ -r $T_PX/usr/share/syslinux/mbr.bin ]; then
MBR_BIN=$T_PX/usr/share/syslinux/mbr.bin
elif [ -r /usr/share/syslinux/mbr.bin ]; then
MBR_BIN=/usr/share/syslinux/mbr.bin
else
dialog --title "ERROR: USB BOOT STICK NOT CREATED" --msgbox \
"Master Boot Record file mbr.bin not found. This script requires that the syslinux package is installed." 6 60
exit
fi
while [ 0 ]; do # the bootdisk menu loop
# Run "rescan-scsi-bus -l" to get an up to date overview of devices:
/sbin/rescan-scsi-bus -l 1>$RDIR 2>$RDIR
# Get a list of removable block devices before the USB stick is inserted:
echo "" > $TMP/remov_prior
for BDEV in $(ls --indicator-style none /sys/block | egrep -v "loop|ram"); do
[ -r /sys/block/$BDEV/removable -a "$(cat /sys/block/$BDEV/removable)" == "1" ] \
&& echo $BDEV >> $TMP/remov_prior
done
if [ "$T_PX" = "/" ]; then
DEFAULTITEM="Create"
else
DEFAULTITEM="Skip"
fi
dialog --title "MAKE USB FLASH BOOT" --default-item "$DEFAULTITEM" --menu \
"If your computer supports booting from a USB device, it is recommended that you make \
a USB boot stick for your system at this time. It will boot your computer straight \
into the root filesystem on $ROOT_DEVICE. \n\
\n\
Please insert a USB flash memory stick and then press ENTER to create a boot stick. \n\
\n\
WARNING! The existing contents of the USB stick will be erased. \n\
" 18 70 2 \
"Create" "Make a USB Linux boot stick" \
"Skip" "Skip making a USB boot stick" \
2> $TMP/return
REPLY=`cat $TMP/return`
rm -f $TMP/return
if [ "$REPLY" = "Create" ]; then
# Run "rescan-scsi-bus -l" to discover our USB stick if needed:
/sbin/rescan-scsi-bus -l 1>$RDIR 2>$RDIR
# Get a list of removable block devices after the USB stick is inserted:
echo "" > $TMP/remov_after
for BDEV in $(ls --indicator-style none /sys/block | egrep -v "loop|ram"); do
[ -r /sys/block/$BDEV/removable -a "$(cat /sys/block/$BDEV/removable)" == "1" ] \
&& echo $BDEV >> $TMP/remov_after
done
ADDED=$(diff -u $TMP/remov_prior $TMP/remov_after | sed -n 's/^\+//p' | grep -v '^+')
REMVD=$(diff -u $TMP/remov_prior $TMP/remov_after | sed -n 's/^\+//p' | grep -v '^+')
if [ -n "$ADDED" ] ; then STICK=$ADDED ; else STICK="" ; fi
rm $TMP/remov_prior $TMP/remov_after
if [ ! -n "$STICK" ]; then
dialog --title "NO NEW DEVICE DETECTED" --ok-label Restart --msgbox \
"No new USB device was detected.
If you had already inserted your USB stick, please remove it now. \
Then select 'Restart'." 7 70
continue
else
VENDOR="Vendor : $(cat /sys/block/$STICK/device/vendor)"
MODEL="Model : $(cat /sys/block/$STICK/device/model)"
SIZE="Size : $(( $(cat /sys/block/$STICK/size) / 2048)) MB"
dialog --title "NEW DEVICE DETECTED" --yesno \
"A new USB device '/dev/$STICK' was detected with specifications:
-- $VENDOR
-- $MODEL
-- $SIZE
If this is the USB stick to use, select 'Yes',
otherwise select 'No'." 12 70
if [ $? -eq 1 ]; then
continue
fi
fi
dialog --title "CREATING USB BOOT STICK" --infobox "Creating SYSLINUX bootdisk for \
$ROOT_DEVICE on /dev/$STICK." 3 64
# Create a 16M partition with FAT16. This should be large enough for any kernel (for now).
PARTSIZE="+16384K"
# Zero out master boot record and then initialize it with one bootable dos partition
dd if=/dev/zero of=/dev/$STICK bs=512 count=1 1> $RDIR 2> $RDIR
echo "PARTSIZE=$PARTSIZE" 1> $RDIR
fdisk /dev/$STICK << EOF 1> $RDIR 2> $RDIR
n
p
1
2048
$PARTSIZE
t 1
6
a
w
EOF
if [ -x /sbin/mkdosfs ]; then
/sbin/mkdosfs -I -n USBSLACK -F 16 /dev/${STICK}1 1> $RDIR 2> $RDIR
else
chroot $T_PX /sbin/mkdosfs -I -n USBSLACK -F 16 /dev/${STICK}1 1> $RDIR 2> $RDIR
fi
sync
# install syslinux
if which syslinux-nomtools 1> $RDIR 2> $RDIR ; then
syslinux-nomtools -i -s /dev/${STICK}1 1> $RDIR 2> $RDIR
elif which strace 1> $RDIR 2> $RDIR ; then
# There is a race condition between udev >= 214 and mtools which causes
# the regular version of syslinux to fail when installing to USB, but
# strace changes the timing just enough that it usually works:
strace syslinux -i -s /dev/${STICK}1 1> $RDIR 2> $RDIR
else
# This might work when the issues with mtools and udev are addressed,
# or if syslinux is eventually able to work around them.
syslinux -i -s /dev/${STICK}1 1> $RDIR 2> $RDIR
fi
# make the device bootable:
echo "dd if=$MBR_BIN of=/dev/$STICK" 1> $RDIR 2> $RDIR
dd if=$MBR_BIN of=/dev/$STICK 1> $RDIR 2> $RDIR
sync
# mount the device and write some configuration files
if [ ! -d $TMP/bootdisk ]; then
mkdir $TMP/bootdisk 2> $RDIR
fi
mount -t vfat /dev/${STICK}1 $TMP/bootdisk 1> $RDIR 2> $RDIR
if [ -r $T_PX/boot/vmlinuz ]; then
cp $T_PX/boot/vmlinuz $TMP/bootdisk/vmlinuz 1> $RDIR 2> $RDIR
elif [ -r $T_PX/vmlinuz ]; then
cp $T_PX/vmlinuz $TMP/bootdisk/vmlinuz 1> $RDIR 2> $RDIR
fi
cat << EOF > $TMP/bootdisk/message.txt 2> $RDIR
Welcome to the 09Slackware07 Linux custom USB boot stick!
By default, this stick boots a root Linux partition on $ROOT_DEVICE when you
hit ENTER. If you'd like to boot some other partition, use a command like
this on the prompt below:
mount root=/dev/sda1 ro
Where "/dev/sda1" is the partition you want to boot, and "ro" specifies that
the partition should be initially mounted as read-only. If you wish to mount
the partition read-write, use "rw" instead. To set the video console mode,
use the vga= parameter (press F1 to see a table). You may also add any other
kernel parameters you might need depending on your hardware, and which
drivers are included in your kernel.
EOF
cat << EOF > $TMP/bootdisk/syslinux.cfg 2> $RDIR
default vmlinuz root=$ROOT_DEVICE vga=normal ro
prompt 1
timeout 6000
display message.txt
F1 f1.txt
F2 message.txt
#F3 f3.txt
#F4 f4.txt
#F5 f5.txt
#F6 f6.txt
#F7 f7.txt
label mount
kernel vmlinuz
append root=$ROOT_DEVICE vga=normal ro
EOF
cat << EOF > $TMP/bootdisk/f1.txt 2> $RDIR
STANDARD MODES:
To make the kernel prompt for standard video modes use: vga=ask
FRAMEBUFFER MODES:
To get the kernel to start in VESA framebuffer mode, you need to pass it
a vga= init string on the "boot:" prompt. Here's a table:
Colors 640x480 800x600 1024x768 1280x1024 1600x1200
--------+---------------------------------------------
256 | 769 771 773 775 796
32,768 | 784 787 790 793 797
65,536 | 785 788 791 794 798
16.8M | 786 789 792 795 799
...such as this for 1024x768x64k:
vga=791
F2 returns to the previous page.
EOF
if [ "$(uname -m)" == "x86_64" ]; then # also install an EFI bootloader
mkdir -p $TMP/bootdisk/EFI/BOOT 1> $RDIR 2> $RDIR
cp $T_PX/boot/elilo-x86_64.efi $TMP/bootdisk/EFI/BOOT/BOOTX64.EFI 1> $RDIR 2> $RDIR
cat << EOF > $TMP/bootdisk/EFI/BOOT/message.txt 2> $RDIR
Welcome to the Slackware Linux custom USB boot stick!
By default, this stick boots a root Linux partition on $ROOT_DEVICE when you
hit ENTER. If you'd like to boot some other partition, use a command like
this on the prompt below:
huge.s root=/dev/sda1 ro
Where "/dev/sda1" is the partition you want to boot, and "ro" specifies that
the partition should be initially mounted as read-only. If you wish to mount
the partition read-write, use "rw" instead. You may also add any other
kernel parameters you might need depending on your hardware, and which
drivers are included in your kernel.
Hit ENTER to boot:
EOF
cat << EOF > $TMP/bootdisk/EFI/BOOT/elilo.conf 2> $RDIR
chooser=simple
message=message.txt
delay=300
timeout=300
#
image=/vmlinuz
label=huge.s
read-only
append="root=$ROOT_DEVICE vga=normal ro"
EOF
fi # end EFI installation
sync
umount /dev/${STICK}1
rm -r $TMP/bootdisk
# Sometimes the nomtools version of syslinux will leave the volume mounted,
# so umount again:
umount /dev/${STICK}1 2> $RDIR
if [ "$T_PX" = "/" ]; then
dialog --title "USB BOOT STICK CREATED" --msgbox \
"The USB boot stick has been successfully created on device /dev/$STICK." 6 60
exit
fi
dialog --title "USB BOOT STICK CREATED" --ok-label Continue --cancel-label Create --menu \
"The USB boot stick has been successfully created on device /dev/$STICK. If you would like to \
create an additional boot stick, please select 'Create' and we'll go back and make another \
one, otherwise select 'Continue' to continue configuring your system." 12 71 2 \
"Continue" "Continue the configuration (done making boot sticks)" \
"Create" "Make a spare Linux boot stick in /dev/$STICK" \
2> $TMP/return
REPLY=`cat $TMP/return`
rm -f $TMP/return
if [ "$REPLY" = "Create" ]; then
continue
else
break
fi
else # ! Create
break
fi
done
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