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Linux - Laptop and Netbook Having a problem installing or configuring Linux on your laptop? Need help running Linux on your netbook? This forum is for you. This forum is for any topics relating to Linux and either traditional laptops or netbooks (such as the Asus EEE PC, Everex CloudBook or MSI Wind).

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Old 09-21-2003, 04:33 PM   #1
trinbellwoods
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Registered: Sep 2003
Location: Montreal
Distribution: Debian Sid
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problem with dual boot "unmountable boot volume"


Hi there;

I installed Mandrake 9.1 on my laptop yesterday and performed a partition with the installation CDs so that I could also run WinXP. I left Windows with approximately 11 GB, which is about 1 gig more than it was using already (my HD is 20 GB). When it asked where I wanted to install the bootloader, I chose "First sector of Drive (MBR)" rather than "First sector of the root partition", mainly because I wasn't sure what to do (silly, I know). Linux works almost perfectly, however when I restart my computer and the boot menu comes up and I choose windows, an error message comes up saying that it can't load windows because of an "unmountable boot volume". I'm not sure exactly why this has happened, so any help with this issue would be welcome!
 
Old 09-21-2003, 09:22 PM   #2
msh8r
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I had a similar experience once in Windows 2000, after installing another OS on a different partition onthe same HD. See if you can project this to XP, like to hear if it works the same way:

I booted with the W2000 install CD, into rescue mode (or whatever it is called). Then you can get to the file boot.ini (in the root of c:\)

The entries in boot.ini say something like (from memory - don't have a Windows machine to verify the exact syntax) :

multi(0)disk(0)rdisk(0)partition(1)\windows=...

I had to edit the partition(1) to partition(0) - that was all.

(Due to lack of an editor in rescue mode I copied the file to a floppy, edited it on another machine, then copied it back.)
 
Old 09-21-2003, 10:56 PM   #3
trinbellwoods
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Distribution: Debian Sid
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re: unmountable boot volume

Alright, that sounds like a very good idea, however I have a few questions: (1) How do I boot from the CD? i.e. where can I change that in Mandrake linux? (there is no longer a startup screen where you press f12 or something for boot options) (2) How do I access the boot.ini file once I boot from the CD? and (3) does this involve formatting that part of my hard drive?

I thank you immensely!

-Trin
 
Old 09-22-2003, 08:31 AM   #4
msh8r
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to your questions:
1. in your BIOS settings
when the machine comes up you have to be quick (right after the screen flashes teh first time, but before the machine reads the harddrive)
set the boot order to boot first from CD (you can leave it like that for most cases, because if there is no CD in the drive it will go to the next option which should be your HD
Linux (or any OS) does not disable your BIOS screen - at that moment your OS hasn't even been loaded.
You might have to do a cold start though (power off)
But read below first - you may be able to do it from Linux.

2.boot.ini is a simple text file in the root of your Windows boot partition. The Windows boot loader looks for that file - it tells it on what partition to find the rest of Windows which it then triest to load. If that information is missing, or incorrect you get the "umountable boot volume" error.
When you installed Linux the partition table on your HD had changed, instead of one or two FAT/FAT32/NTFS partitions you know have one FAT/FAT32/NTFS and at least three Linux partitions.

If you can mount your Windows partition from Linux (if it's FAT or FAT32 - no problem, but be VERY careful if you are trying to write to an NTFS partition from Linux - use the WinCD ROM instead) it's as simple as this:

mkdir /mnt/windows (or whatever you want to call the mountpoint)
mount /dev/hda1 /mnt/windows

then you can edit boot.ini:

vi /mnt/windows/boot.ini


If your Win partition is NTFS I would use the Windows CD ROM to boot though. Alternatively you could mount the HD on another (WinNT/2000/XP machine and edit boot.ini from there.)


3. Unless something else got screwed up: No.
Making a backup of that partition before wouldn't hurt though, just in case ;-)
 
Old 09-22-2003, 08:37 AM   #5
ferrari
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See my reply in Linux -General section to bubbles. Very similar problem. Might be of help.

Last edited by ferrari; 09-22-2003 at 08:39 AM.
 
Old 09-22-2003, 04:23 PM   #6
trinbellwoods
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Registered: Sep 2003
Location: Montreal
Distribution: Debian Sid
Posts: 29

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alright, since the Windows partition is in NTFS format, I've decided to take your advice and boot from the CD. However, when I do so, a screen comes up warning me that my drive will be formatted, and asks me if I want to continue, if I says okay, another screen comes up, pretty much warning me about the same thing, and if I abort, a command prompt comes up as A:\> which I think is odd, because I'm attempting to boot from the CD, which is drive D. Anyways, it won't let me change to any other drive, so I looked around on "A", and I couldn't find a boot.ini file. I know....I'm a total newb...can you tell me exactly what I need to do to go about accessing, editing, and saving the boot.ini file?
 
Old 09-22-2003, 05:14 PM   #7
msh8r
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The CD that you are using - is that a REAL Windows CD, or some kind of quick-restore CD ?
Another solution is a boot floppy that allows you to read/write NTFS partitions. If you send me your email address I'll mail you the image.
(Don't post your address in the thread, use the "email" button below this message.)
Let's get this problem fixed!
 
Old 09-23-2003, 11:12 AM   #8
trinbellwoods
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Registered: Sep 2003
Location: Montreal
Distribution: Debian Sid
Posts: 29

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Okay, I've sent you my e-mail address. The CDs that I have are the product recovery CDs that came with my computer - I guess they aren't technically the real Windows CDs. Anyways, I'll check my e-mail frequently to see if you've sent me the file! Thanks so much!
 
Old 09-23-2003, 11:33 AM   #9
msh8r
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I've mailed you the disk image, hope it works.
 
  


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