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|
#!/bin/rc
rfork e
. /rc/bin/pc/defs
if(! ~ $#* 1) {
echo 'usage: bootplan9 /dev/sdC0' >[1=2]
echo 'sets active the plan 9 partition on the named disk.' >[1=2]
exit usage
}
disk=$1
fn x {
if(! test -f $disk/$1) {
echo 'could not find '$disk/$1
exit disk
}
}
x plan9
x data
x ctl
diskbase=`{basename `{cleanname $disk}}
first=`{ls -p '#S' | sed 1q}
if(! ~ $first $diskbase) {
echo 'warning: The plan 9 partition is not on the boot disk,' >[1=2]
echo 'so making it the active partition will have no effect.' >[1=2]
}
p9offset=`{disk/fdisk -p $disk/data |grep '^part plan9 ' | awk '{print $4}'}
if(! ~ $#p9offset 1) {
echo 'could not find plan 9 partition.' >[1=2]
echo 'cannot happen' >[1=2]
exit bad
}
if(test $p9offset -gt 4128705) { # 65536 * 63
echo >[1=2]
echo 'Your Plan 9 partition is more than 2GB into your disk,' >[1=2]
echo 'and the master boot records used by most operating systems' >[1=2]
echo 'cannot access it (and thus cannot boot it).' >[1=2]
echo >[1=2]
echo 'Would you like to install a master boot record' >[1=2]
echo 'that will be able to access partitions more than 2GB into the disk?' >[1=2]
echo >[1=2]
prompt 'Install a new mbr' y n
switch($rd) {
case n
echo >[1=2]
echo 'Not setting Plan 9 partition active, then.' >[1=2]
echo >[1=2]
exit bad
case y
disk/mbr -m /386/mbr $disk/data
}
}
p9part=`{disk/fdisk $disk/data >[2]/dev/null </dev/null |
grep PLAN9 | sed 1q | sed 's/ *(p.) .*/\1/'}
if(~ $#p9part 1) {
{ echo 'A '^$p9part; echo w } | disk/fdisk $disk/data >[2]/dev/null >/dev/null
}
if not {
echo 'Could not find Plan 9 partition.'
exit notdone
}
exit
|
