inst/bootsetup: update bootsector when not formating

diff --git a/rc/bin/inst/bootsetup b/rc/bin/inst/bootsetup
index 6044fa04dd8d0d5e63fbacc90a73c97459ba862a..e2c5d34ba3b3da30846e4ed569eca871d9172d33 100755 (executable)
--- a/rc/bin/inst/bootsetup
+++ b/rc/bin/inst/bootsetup
@@ -60,9 +60,15 @@ case go
 
        if(~ $need9fatformat yes){
                log Initializing Plan 9 FAT partition.
-               disk/format -r 2 -d -b /386/pbs $9fat
-               mount -c /srv/dos /n/9fat $9fat
+               logprog disk/format -r 2 -d -b /386/pbs $9fat
+               logprog mount -c /srv/dos /n/9fat $9fat
        }
+       if not {
+               log Updating bootsector.
+               logprog dd -if $9fat -of /n/9fat/pbs.bak -bs 512 -count 1
+               logprog disk/format -b /386/pbs $9fat
+       }
+
        logprog rm -f /n/9fat/^(9bootfat plan9.ini 9pcf 9pccpuf)
        logprog cp /n/newfs/386/9bootfat /n/9fat/9bootfat
        # make file continous on disk