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Old 08-14-2009, 07:48 AM   #1
theacerguy
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boot a windows partition without win/longhorn installed


hi all,
i just removed windows on my grandads pc cos my nephew screwed windows but i kept the recovery part so now he wants win back but how do i boot it? from grub without longhorn?
 
Old 08-15-2009, 05:03 PM   #2
PTrenholme
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Assuming you can boot a Linux distribution from GRUB (or a Live CD for some distribution), you can do a sudo /sbin/fdisk -l /dev/sd? to identify all the partitions on the drive. One of those should be the recovery partition for the Windows system. Here's what this laptop looks like:
Code:
$ sudo /sbin/fdisk -l /dev/sd?
[sudo] password for Peter:

Disk /dev/sda: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/track, 19457 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0xa602a602

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1        8820    70846618+   7  HPFS/NTFS
/dev/sda2            8821       17926    73143945    5  Extended
/dev/sda3           17927       19457    12297757+   7  HPFS/NTFS
/dev/sda5            8821       13184    35053767   83  Linux
/dev/sda6           17550       17926     3028221   82  Linux swap / Solaris
/dev/sda7           13185       17549    35061831   83  Linux

Partition table entries are not in disk order

Disk /dev/sdb: 320.0 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x00032256

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1   *           1          25      200781   83  Linux
/dev/sdb2              26       38913   312367860   8e  Linux LVM
As you can see, my recovery partition is /dev/sda3. To boot that partition, I have this stanza in my /boot/grub/grub.conf file:
Code:
title           Windows Vista Recovery (hd0.1)
rootnoverify    (hd0,1)
makeactive
chainloader     +1
(Note that sda3 is (hd0,1) to GRUB, since it labels drive and partitions starting from 0, not 1, and does not count "extended" partitions.)

Anyhow, all you need to do is add the appropriate stanza to you grub.conf file. (Some distributions use menu.lst instead of grub.conf - check you /boot/grub directory to see which is used by your distribution.)
 
Old 08-16-2009, 03:24 AM   #3
Wim Sturkenboom
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If there is a recovery partition, the system should have come with a way to access it. E.g a special CD/floppy. You can try to locate it. If you post make and model of the PC, somebody might be able to shine somemore light on it.
 
Old 08-16-2009, 08:47 AM   #4
theacerguy
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well i know the recovery is /dev/sda1 and no i dont have a disk but i think i can sort it cos super grub disk has a option to boot to win
 
  


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