From 431136fdd54c02ae09d0fca5b63123c3205110c3 Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pj@pehjota.net>
Date: Mon, 10 Nov 2014 22:37:11 -0500
Subject: install-lilo: Use PARTUUID for root option

---
diff --git a/install-lilo.sh b/install-lilo.sh
index 987b7a5..a421a36 100644
--- a/install-lilo.sh
+++ b/install-lilo.sh
@@ -5,6 +5,13 @@ set -u
 main()
 {
 	local boot=
+	local root=
+	local rootdev=
+	local rootpart=
+	local b4=
+	local b3=
+	local b2=
+	local b1=
 
 	[ "x$(id -u)" = 'x0' ] || error 'Must be run as the superuser'
 
@@ -16,6 +23,15 @@ main()
 		boot="$(mountpoint -n /boot | cut -d ' ' -f 1)"
 		boot="${boot%%[0-9]}"
 		root="$(mountpoint -n / | cut -d ' ' -f 1)"
+		rootdev="$(printf '%s\n' "${root}" | \
+			sed 's|^\([/a-zA-Z]*\)\([0-9]*\)|\1|')"
+		rootpart="$(printf '%s\n' "${root}" | \
+			sed 's|^\([/a-zA-Z]*\)\([0-9]*\)|\2|')"
+		read b4 b3 b2 b1 <<-EOF
+			$(od -An -tx1 -v -j 440 -N 4 "${rootdev}")
+			EOF
+		root="$(printf 'PARTUUID=%s-%02d\n' \
+			"${b1}${b2}${b3}${b4}" ${rootpart})"
 	elif [ ${#} -eq 2 ]; then
 		boot="${1}"
 		root="${2}"
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