diff --git a/ChangeLog b/ChangeLog
index 9e802b13b..fd587de80 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2000-04-15  OKUJI Yoshinori  <okuji@gnu.org>
+
+	* util/grub-install.in (root_device): Append `/' to ${rootdir},
+	since ROOTDIR may be empty. Reported by Satoshi Nagayasu
+	<snaga@oak.forus.or.jp>.
+	
 2000-04-15  Jochen Hoenicke  <jochen@gnu.org>
 
 	* configure.in: Added --disable-reiserfs option.
diff --git a/util/grub-install.in b/util/grub-install.in
index 5d5ae4cad..6e9e0dcfd 100644
--- a/util/grub-install.in
+++ b/util/grub-install.in
@@ -210,7 +210,7 @@ fi
 # Get the root drive.
 # For now, this uses the program `df' to get the device name, but is
 # this really portable?
-root_device=`df ${rootdir} | grep /dev/ | sed 's%.*\(/dev/[a-z0-9]*\).*%\1%'`
+root_device=`df ${rootdir}/ | grep /dev/ | sed 's%.*\(/dev/[a-z0-9]*\).*%\1%'`
 root_drive=`convert "$root_device"`
 if test "x$root_drive" = x; then
     exit 1