Initial commit

slax/boot/bootinst.sh

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+#!/bin/sh
+#
+#     This script will setup booting from disk (USB or harddrive)
+#
+#     If you see this file in a text editor instead of getting it executed,
+#     then it is missing executable permissions (chmod). You can try to set
+#     exec permissions for this file by using:  chmod a+x bootinst.sh
+#     Alternatively, you may try to run bootinst.bat file instead
+#
+#     Scrolling down will reveal the actual code of this script.
+#
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+# if we're running this from X, re-run the script in konsole or xterm
+if [ "$DISPLAY" != "" ]; then
+   if [ "$1" != "--rex" -a "$2" != "--rex" ]; then
+      konsole --nofork -e /bin/sh $0 --rex 2>/dev/null || xterm -e /bin/sh $0 --rex 2>/dev/null || /bin/sh $0 --rex 2>/dev/null
+      exit
+   fi
+fi
+
+# make sure I am root
+if [ "$UID" != "0" -a "$UID" != "" ]; then
+   echo ""
+   echo "You are not root. You must run bootinst script as root."
+   echo "The bootinst script needs direct access to your boot device."
+   echo "Use sudo or kdesudo or similar wrapper to execute this."
+   read junk
+   exit 1
+fi
+
+# change working directory to dir from which we are started
+CWD="$(pwd)"
+BOOT="$(dirname "$0")"
+BOOT="$(realpath "$BOOT" 2>/dev/null || echo $BOOT)"
+cd "$BOOT"
+
+# find out device and mountpoint
+PART="$(df . | tail -n 1 | tr -s " " | cut -d " " -f 1)"
+DEV="$(echo "$PART" | sed -r "s:[0-9]+\$::" | sed -r "s:([0-9])[a-z]+\$:\\1:i")"   #"
+
+# check if disk is already bootable. Mostly for Windows discovery
+if [ "$(fdisk -l "$DEV" | fgrep "$DEV" | fgrep "*")" != "" ]; then
+   echo ""
+   echo "Partition $PART seems to be located on a physical disk,"
+   echo "which is already bootable. If you continue, your drive $DEV"
+   echo "will boot only Slax by default."
+   echo "Press [Enter] to continue, or [Ctrl+C] to abort..."
+   read junk
+fi
+
+ARCH=$(uname -m)
+if [ "$ARCH" = "x86_64" ]; then ARCH=64; else ARCH=32; fi
+EXTLINUX=extlinux.x$ARCH
+
+if [ ! -x ./$EXTLINUX ]; then
+   # extlinux is not executable. There are two possible reasons:
+   # either the fs is mounted with noexec, or file perms are wrong.
+   # Try to fix both, no fail on error yet
+   mount -o remount,exec $DEV
+   chmod a+x ./$EXTLINUX
+fi
+
+if [ ! -x ./$EXTLINUX ]; then
+   # extlinux is still not executable. As a last try, copy it to .exe
+   # because the partition may be mounted with showexec option, from which
+   # we probably can't escape by remount
+   cp -f ./$EXTLINUX ./extlinux.exe
+   EXTLINUX=extlinux.exe
+fi
+
+# install syslinux bootloader
+echo "* attempting to install bootloader to $BOOT..."
+
+./"$EXTLINUX" --install "$BOOT"
+
+if [ $? -ne 0 ]; then
+   echo "Error installing boot loader."
+   echo "Read the errors above and press enter to exit..."
+   read junk
+   exit 1
+fi
+
+if [ "$DEV" != "$PART" ]; then
+   # Setup MBR on the first block
+   echo "* setup MBR on $DEV"
+   dd bs=440 count=1 conv=notrunc if="$BOOT/mbr.bin" of="$DEV" 2>/dev/null
+
+   # Toggle bootable flags
+   echo "* set bootable flag for $PART"
+   PART="$(echo "$PART" | sed -r "s:.*[^0-9]::")"
+   (
+      fdisk -l "$DEV" | fgrep "*" | fgrep "$DEV" | cut -d " " -f 1 \
+        | sed -r "s:.*[^0-9]::" | xargs -I '{}' echo -ne "a\n{}\n"
+      echo a
+      echo $PART
+      echo w
+   ) | fdisk $DEV >/dev/null 2>&1
+fi
+
+echo "Boot installation finished."
+echo "Press Enter..."
+read junk
+cd "$CWD"