From 4c72bfe6a1c5a943f060d13c2c6dfd7c39902552 Mon Sep 17 00:00:00 2001
From: Thorsten Glaser <tg@mirbsd.org>
Date: Sat, 27 Sep 2014 22:32:28 +0200
Subject: write a disk signature

---
 scripts/install.sh | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

(limited to 'scripts/install.sh')

diff --git a/scripts/install.sh b/scripts/install.sh
index 600543923..ec08151aa 100755
--- a/scripts/install.sh
+++ b/scripts/install.sh
@@ -453,6 +453,14 @@ if [[ $target = raspberry-pi ]]; then
 	    dd of="$T/firsttrack" conv=notrunc bs=1 seek=$((0x1BE)) 2>/dev/null
 fi
 
+# disk signature
+rnddev=/dev/urandom
+[[ -c /dev/arandom ]] && rnddev=/dev/arandom
+dd if=$rnddev bs=4 count=1 2>/dev/null | \
+    dd of="$T/firsttrack" conv=notrunc bs=1 seek=$((0x1B8)) 2>/dev/null
+print -n '\0\0' | \
+    dd of="$T/firsttrack" conv=notrunc bs=1 seek=$((0x1BC)) 2>/dev/null
+
 (( quiet )) || print Cleaning out partitions...
 (( datafssz )) && dd if=/dev/zero bs=1048576 count=1 \
     seek=$((cyls - cfgfs - datafssz)) 2>/dev/null
@@ -507,8 +515,6 @@ case $target {
 }
 
 cd "$R"
-rnddev=/dev/urandom
-[[ -c /dev/arandom ]] && rnddev=/dev/arandom
 dd if=$rnddev bs=16 count=1 >>etc/.rnd 2>/dev/null
 (( quiet )) || print Fixing up permissions...
 chown 0:0 tmp
-- 
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