mirror of
git://slackware.nl/current.git
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176 lines
6.2 KiB
Text
176 lines
6.2 KiB
Text
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#!/bin/sh
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#BLURB="Create a USB Linux boot stick"
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RDIR=/dev/tty4
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NDIR=/dev/null
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TMP=/var/log/setup/tmp
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if [ ! -d $TMP ]; then
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mkdir -p $TMP
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fi
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T_PX="$1"
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ROOT_DEVICE="$2"
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while [ 0 ]; do # the bootdisk menu loop
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# Run "rescan-scsi-bus -l" to get an up to date overview of devices:
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/sbin/rescan-scsi-bus -l 1>$RDIR 2>$RDIR
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# Get a list of removable block devices before the USB stick is inserted:
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echo "" > $TMP/remov_prior
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for BDEV in $(ls --indicator-style none /sys/block | egrep -v "loop|ram"); do
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[ -r /sys/block/$BDEV/removable -a "$(cat /sys/block/$BDEV/removable)" == "1" ] \
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&& echo $BDEV >> $TMP/remov_prior
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done
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dialog --title "MAKE USB FLASH BOOT" --default-item "Skip" --menu \
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"If your computer supports booting from a USB device, it is recommended that you make \
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a USB boot stick for your system at this time. It will boot your computer straight \
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into the root filesystem on $ROOT_DEVICE. \n\
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\n\
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Please insert a USB flash memory stick and then press ENTER to create a boot stick. \n\
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\n\
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WARNING! The existing contents of the USB stick will be erased. \n\
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" 18 70 2 \
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"Create" "Make a USB Linux boot stick" \
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"Skip" "Skip making a USB boot stick" \
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2> $TMP/return
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REPLY=`cat $TMP/return`
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rm -f $TMP/return
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if [ "$REPLY" = "Create" ]; then
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# Run "rescan-scsi-bus -l" to discover our USB stick if needed:
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/sbin/rescan-scsi-bus -l 1>$RDIR 2>$RDIR
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# Get a list of removable block devices after the USB stick is inserted:
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echo "" > $TMP/remov_after
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for BDEV in $(ls --indicator-style none /sys/block | egrep -v "loop|ram"); do
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[ -r /sys/block/$BDEV/removable -a "$(cat /sys/block/$BDEV/removable)" == "1" ] \
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&& echo $BDEV >> $TMP/remov_after
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done
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ADDED=$(diff -u $TMP/remov_prior $TMP/remov_after | sed -n 's/^\+//p' | grep -v '^+')
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REMVD=$(diff -u $TMP/remov_prior $TMP/remov_after | sed -n 's/^\+//p' | grep -v '^+')
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if [ -n "$ADDED" ] ; then STICK=$ADDED ; else STICK="" ; fi
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rm $TMP/remov_prior $TMP/remov_after
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if [ ! -n "$STICK" ]; then
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dialog --title "NO NEW DEVICE DETECTED" --ok-label Restart --msgbox \
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"No new USB device was detected.
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If you had already inserted your USB stick, please remove it now. \
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Then select 'Restart'." 7 70
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continue
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else
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VENDOR="Vendor : $(cat /sys/block/$STICK/device/vendor)"
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MODEL="Model : $(cat /sys/block/$STICK/device/model)"
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SIZE="Size : $(( $(cat /sys/block/$STICK/size) / 2048)) MB"
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dialog --title "NEW DEVICE DETECTED" --yesno \
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"A new USB device '/dev/$STICK' was detected with specifications:
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-- $VENDOR
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-- $MODEL
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-- $SIZE
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If this is the USB stick to use, select 'Yes',
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otherwise select 'No'." 12 70
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if [ $? -eq 1 ]; then
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continue
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fi
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fi
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dialog --title "CREATING USB BOOT STICK" --infobox "Creating SYSLINUX bootdisk for \
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$ROOT_DEVICE on /dev/$STICK." 3 64
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# Determine max size of the filesystem (in KB) we want to create:
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USBSIZE=$(( $(cat /sys/block/$STICK/size) / 2048))
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if [ $USBSIZE -lt 512 ]; then DOSSIZE=$(($USBSIZE*1024))
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else DOSSIZE=$((512*1024))
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fi
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# Hack from Pat. If we're wasting a whole stick, who cares if the partition is
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# extra-small, as long as the kernel fits? Also, FAT12 is the least problematic.
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DOSSIZE=15861
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if [ -x /sbin/mkdosfs ]; then
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/sbin/mkdosfs -I -n USBSLACK -F 12 /dev/$STICK $DOSSIZE 1> /dev/null 2> /dev/null
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else
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chroot $T_PX /sbin/mkdosfs -I -n USBSLACK -F 12 /dev/$STICK $DOSSIZE 1> /dev/null 2> /dev/null
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fi
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if [ ! -d $TMP/bootdisk ]; then
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mkdir $TMP/bootdisk
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fi
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mount -t vfat /dev/$STICK $TMP/bootdisk 1> /dev/null 2> /dev/null
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if [ -r $T_PX/vmlinuz ]; then
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cp $T_PX/vmlinuz $TMP/bootdisk/vmlinuz
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elif [ -r $T_PX/boot/vmlinuz ]; then
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cp $T_PX/boot/vmlinuz $TMP/bootdisk/vmlinuz
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fi
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# We don't need the isolinux bootloader with syslinux do we?
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#cp $T_PX/usr/share/syslinux/isolinux.bin $TMP/bootdisk/
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cat << EOF > $TMP/bootdisk/message.txt
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Welcome to the 09Slackware07 Linux custom USB boot stick!
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By default, this stick boots a root Linux partition on $ROOT_DEVICE when you
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hit ENTER. If you'd like to boot some other partition, use a command like
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this on the prompt below:
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mount root=/dev/sda1 ro
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Where "/dev/sda1" is the partition you want to boot, and "ro" specifies that
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the partition should be initially mounted as read-only. If you wish to mount
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the partition read-write, use "rw" instead. To set the video console mode,
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use the vga= parameter (press F1 to see a table). You may also add any other
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kernel parameters you might need depending on your hardware, and which
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drivers are included in your kernel.
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EOF
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cat << EOF > $TMP/bootdisk/syslinux.cfg
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default vmlinuz root=$ROOT_DEVICE vga=normal ro
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prompt 1
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timeout 6000
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display message.txt
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F1 f1.txt
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F2 message.txt
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#F3 f3.txt
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#F4 f4.txt
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#F5 f5.txt
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#F6 f6.txt
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#F7 f7.txt
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label mount
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kernel vmlinuz
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append root=$ROOT_DEVICE vga=normal ro
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EOF
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cat << EOF > $TMP/bootdisk/f1.txt
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STANDARD MODES:
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To make the kernel prompt for standard video modes use: vga=ask
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FRAMEBUFFER MODES:
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To get the kernel to start in VESA framebuffer mode, you need to pass it
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a vga= init string on the "boot:" prompt. Here's a table:
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Colors 640x480 800x600 1024x768 1280x1024 1600x1200
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--------+---------------------------------------------
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256 | 769 771 773 775 796
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32,768 | 784 787 790 793 797
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65,536 | 785 788 791 794 798
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16.8M | 786 789 792 795 799
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...such as this for 1024x768x64k:
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vga=791
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F2 returns to the previous page.
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EOF
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umount /dev/$STICK
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rm -r $TMP/bootdisk
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# Make the device bootable:
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syslinux -s /dev/$STICK 1> /dev/null 2> /dev/null
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dialog --title "USB BOOT STICK CREATED" --ok-label Continue --cancel-label Create --menu \
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"The USB boot stick has been successfully created in /dev/$STICK. If you would like to \
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create an additional boot stick, please select 'Create' and we'll go back and make another \
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one, otherwise select 'Continue' to continue configuring your system." 12 70 2 \
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"Continue" "Continue the configuration (done making boot sticks)" \
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"Create" "Make a spare Linux boot stick in /dev/$STICK" \
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2> $TMP/return
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REPLY=`cat $TMP/return`
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rm -f $TMP/return
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if [ "$REPLY" = "Create" ]; then
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continue
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else
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break
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fi
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else # ! Create
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break
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fi
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done
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