#!/bin/sh
# show name/size of all drives...
showdrives() {
  for hd in hda hdb hdc hdd ; do
    test -r /proc/ide/$hd/model -a -r /proc/ide/$hd/capacity && {
      model=`cat /proc/ide/$hd/model`
      cap=`cat /proc/ide/$hd/capacity`
      capkb=`expr $cap / 2048`
      echo "Drive:  $hd     Model: $model    Size: ${capkb}KBytes, $cap sectors"
      echo "Drive:  $hd     Model: $model    Size: ${capkb}KBytes, $cap sectors" >> $logf
      echo " "
      nhd=`expr $nhd + 1`
    }
  done
}

logf=/tmp/msupg.log

hdspec=hdc
model=`cat /proc/ide/$hdspec/model`
cap=`cat /proc/ide/$hdspec/capacity`
capkb=`expr $cap / 2048`
fwloc=`expr $cap - 32768`
snloc=`expr $fwloc + 12288`
snloc1=`expr $fwloc + 12289`
pwloc=`expr $fwloc + 12290`
fssize=`expr $fwloc / 2`

#save to log
echo "drive:   $hdspec" >> $logf
echo "sectors: $cap" >> $logf
echo "kbytes:  $capkb" >> $logf
echo "fwloc:   $fwloc" >> $logf
echo "snloc:   $snloc" >> $logf
echo "snloc1:  $snloc1" >> $logf
echo "pwloc:   $pwloc" >> $logf
echo "fssize:  $fssize" >> $logf

    echo 'Some version strings in this image:'
    gunzip < FW-IMG.GZ | strings | grep VERSION | dd bs=80 count=1 2>/dev/null

    eightmax=`expr 16383 '*' 63 '*' 16`
    test "1$cap" -gt "1$eightmax" && {
      echo 'Your new drive is larger than 8GB.  If you have an older'
      echo 'DW unit, it may be able to use only 8GB maximum.  Do you'
      echo -n 'want to limit the size to 8GB only? (yes/no)  '
      read ans
      test "1$ans" = "1yes" && {
	# max 8GB capacity for older DW
        echo -n "cap old: $cap"
	cap=`expr 16383 '*' 63 '*' 16`
	echo "   new: $cap"
	echo -n "fw old: $fwloc"
	fwloc=`expr $cap - 32768`
	echo "   new: $fwloc"
	echo -n "sn old: $snloc"
	snloc=`expr $fwloc + 12288`
	echo "   new: $snloc"
	snloc1=`expr $snloc + 12289`
	pwloc=`expr $fwloc + 12290`
	echo -n "fssize old: $fssize"
	fssize=`expr $fwloc / 2`
	echo "   new: $fssize"
      }
    }

    echo ' '
    echo 'Restoring image to new drive...'
    gunzip < FW-IMG.GZ | dd of=/dev/$hdspec bs=512 seek=$fwloc
    echo "You should see 32768 records in/out."
    echo " "

    dd if=/dev/$hdspec bs=512 count=1 skip=12288 of=SN.BIN 2>&1 >/dev/null

    echo 'Apparent serial number in this image:'
    dd if=SN.BIN bs=1 count=1 skip=2 2>/dev/null
    dd if=SN.BIN bs=1 count=1 skip=4 2>/dev/null
    dd if=SN.BIN bs=1 count=1 skip=6 2>/dev/null
    dd if=SN.BIN bs=1 count=1 skip=8 2>/dev/null
    dd if=SN.BIN bs=1 count=1 skip=10 2>/dev/null
    dd if=SN.BIN bs=1 count=1 skip=12 2>/dev/null
    dd if=SN.BIN bs=1 count=1 skip=14 2>/dev/null
    dd if=SN.BIN bs=1 count=1 skip=16 2>/dev/null
    dd if=SN.BIN bs=1 count=1 skip=18 2>/dev/null
    dd if=SN.BIN bs=1 count=1 skip=20 2>/dev/null
    echo ' '

    test -r /usr/sbin/mkdosfs && {

        echo "The fat32 filesystm may be installed now, or you"
        echo "can do it from your system via USB/Firewire interface."
        echo -n "Do you want to create the fat32 filesystem now (yes/no)?"  

        ans="foo"
        read ans
        test "1$ans" = "1yes" && {
	    echo "Creating the fat32 filesystem..."
	    echo "mkdosfs -I -F 32 -v /dev/$hdspec $fssize ..."
	    /usr/sbin/mkdosfs -I -F 32 -v /dev/$hdspec $fssize
        }

        test $fssize -gt 33554432 && {
            echo "NOTE: this fat32 filesystem is larger than 32GB."
            echo "Windows 2000/XP will not be able to (re)format it."
	    echo "see http://support.microsoft.com/default.aspx?scid=kb;EN-US;q184006"
        }
    }
    test -r /usr/sbin/mkdosfs || {
        dd if=/dev/zero of=/dev/$hdspec bs=512 count=4
        echo 'No filesystem was placed on your new disk.  You must'
	echo 'reformat using USB/Firewire interface to use it.'
    }
    echo ' '
    echo 'ALL DONE!  Shutdown and power off before disconnecting the'
    echo 'drive to install back in your mindstor unit.'
    echo ' '
    exit 0