Warn users about non NetBSD mbr.

New boot doesn't work with old mbr, when there are multiple MINIX
partitions. Warn user about it and suggest to install new mbr.

diff --git a/commands/setup/setup.sh b/commands/setup/setup.sh
index bc72ccf5de99254dd9c36e620ab06b75250a4c3b..10ae1eedbe1657b51fe656e268aca70140a5b403 100644 (file)
--- a/commands/setup/setup.sh
+++ b/commands/setup/setup.sh
@@ -466,6 +466,30 @@ if [ "$ok" != Y -a "$ok" != y -a "$ok" != "" ]
 then
        usenewboot=0
        bootsectors=1
+else
+       # check for potential problems with old mbr.
+       # space for bootxx has been checked earlier.
+       minix_primaries=`echo -n "" | fdisk /dev/$primary | grep "MINIX" | wc -l`
+       if [ "$minix_primaries" -gt 1 ]
+       then
+               # old mbr + bootxx will not work with several partitions of
+               # the same type.
+               disk=`echo -n "/dev/$primary" | sed 's/p[0-3]//'`
+               dd if=/usr/mdec/mbr of=temp_mbr_netbsd bs=1 count=440 2>/dev/null
+               dd if="$disk" bs=1 count=440 | cmp - temp_mbr_netbsd >/dev/null
+               if [ "$?" -ne 0 ]
+               then
+                       echo "Warning: you have MBR which doesn't support multiple MINIX 3 partitions!"
+                       echo "You will be able to boot from the first one only!"
+                       echo -n "Do you want to install new MBR into $disk? [Y] "
+                       read ok
+                       if [ "$ok" = Y -o "$ok" = y -o "$ok" = "" ]
+                       then
+                               installboot_nbsd -m "$disk" /usr/mdec/mbr >/dev/null
+                       fi
+               fi
+               rm temp_mbr_netbsd
+       fi
 fi
 
 echo "