use docker

assets/build-image

@@ -9,34 +9,35 @@ if [ -e $out ]; then
 fi
 
 # create the file
-truncate -s2100M $out
+truncate -s144M $out
 
 # partition it
 sgdisk \
-	--new=0:4096:+2G --typecode=0:EF00 -c 0:boot   \
-	--new=0:0:+2M    --typecode=0:EF02 -c 0:BIOS-BOOT \
+	--new=0:4096:+128M --typecode=0:EF00 -c 0:boot   \
+	--new=0:0:+2M      --typecode=0:EF02 -c 0:BIOS-BOOT \
 	--hybrid=1:2 --print $out
 
 dev=$(losetup --find --show --partscan $out)
 trap "losetup -d $dev" EXIT
 
-devmap=/tmp/devmap
-cat >$devmap <<EOF
-(hd0) $dev
-EOF
-
 # format filesystems
 mkfs.vfat -n BLKBOOT ${dev}p1
 
 # mount
-mkdir -p /mnt
-(
-mount ${dev}p1 /mnt
-trap "umount /mnt" EXIT
+mkdir -p /boot
 
-mkdir -p /mnt/grub
-cp /assets/grub.cfg /mnt/grub
+mount ${dev}p1 /boot
+trap "umount /boot" EXIT
 
-grub-install --target=i386-pc --boot-directory=/mnt $dev
-grub-install --target=x86_64-efi --removable --boot-directory=/mnt --efi-directory=/mnt
-)
+mkdir -p /boot/grub
+cp /assets/grub.cfg /boot/grub
+
+devmap=/boot/grub/device.map
+cat >$devmap <<EOF
+(hd0) $dev
+EOF
+
+grub-install --target=i386-pc $dev
+grub-install --target=x86_64-efi --removable --efi-directory=/boot
+
+rm $devmap