[scripts] configure proper partition type for ext3 boot fs

scripts/efikamx_image_generator_script.sh

@@ -2,6 +2,7 @@
 
 export BOOT_PART_MKFS_ARGS="-L boot"
 export BOOT_PART_TYPE=ext3
+export BOOT_PART_TYPE_MBR=83
 export BOOT_PART_TYPE_INSIDE_ROOT=1
 export ROOT_PART_TYPE=ext4
 export MAKE_TARBALL=0

scripts/mkloopcard.sh

@@ -37,6 +37,7 @@ CHROOT_DIR="${5}"
 MAKE_TARBALL="${MAKE_TARBALL:-1}"
 # Boot partition type
 BOOT_PART_TYPE="${BOOT_PART_TYPE:-vfat}"
+BOOT_PART_TYPE_MBR="${BOOT_PART_TYPE_MBR:-0x0C}"
 BOOT_PART_MKFS_ARGS="${BOOT_PART_MKFS_ARGS:--n boot -F 32}"
 # Root partition type
 ROOT_PART_TYPE="${ROOT_PART_TYPE:-ext3}"
@@ -92,7 +93,7 @@ echo "Start offset : ${STARTOFFSET} bytes"
 # Starts at sect 63, ends at sect 144584, each sector is 512bytes
 # In fact it creates 9 cyls
 {
-echo ,9,0x0C,*
+echo ,9,${BOOT_PART_TYPE_MBR},*
 echo ,,,-
 } | sfdisk -D -H 255 -S 63 -C $CYLINDERS $DRIVE