bootinst linux boot installer

bootfiles/bootinst.sh

@@ -0,0 +1,32 @@
+#!/bin/sh
+# Setup booting from disk (USB or harddrive)
+# Requires: extlinux, fdisk, df, tail, tr, cut, cat, sed
+set -e
+
+# change working directory to dir from which we are started
+CWD="$(pwd)"
+BOOT="$(dirname "$0")"
+cd "$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")"   #"
+
+# install syslinux bootloader
+extlinux --install $BOOT
+
+if [ "$DEV" != "$PART" ]; then
+   # Setup MBR on the first block
+   cat "$BOOT/mbr.bin" > "$DEV"
+
+   # Toggle a bootable flag
+   PART="$(echo "$PART" | sed -r "s:.*[^0-9]::")"
+   (
+      fdisk -l "$DEV" | fgrep "*" | fgrep "$DEV" | cut -d " " -f 1 \
+        | sed -r "s:.*[^0-9]::" | xargs -I '{}' echo -ne "a\n{}\n"
+      echo -ne "a\n$PART\nw\n"
+   ) | fdisk $DEV >/dev/null 2>&1
+fi
+
+echo "Boot installation finished."
+cd "$CWD"