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Old 10-12-2010, 05:20 AM   #1
vvwolfe
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Registered: Oct 2010
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Issues with dual boot Ubuntu/XP Linux installed first


I have 2 T60 laptops
both had Unbutu linux 9.10
I wanted 1 to dual boot with winxp
An aquaintance of mine told me would be easier with a clean start from windows first and I should use command
sudo dd if=/dev/zero of=/dev/sda bs=512 count=1
to zero the hd as I wanted xp installed first
Now when i try to boot xp from disk I get error no valid operating system
In bios Sata is set to compatability

Linux boot disk will run/install no problem

Can anyone suggest what the problem is? why will linux load from disk but not windows xp??

Xp boot disk is recognized by laptop with windows already installed

Thank you
 
Old 10-12-2010, 05:38 AM   #2
prayag_pjs
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Are you sure your disK is ok.Also try booting with some other Windows cd/dvd/vista or seven
 
Old 10-12-2010, 08:36 AM   #3
hughetorrance
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You need to mention what boot manager you are using,is it LILO or GRUB and if its GRUB,is it legacy or GRUB2 ... ! perhaps you can just install GRUB from most live distros or from the UBCD or whatever.
 
Old 10-12-2010, 09:14 AM   #4
onebuck
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Hi,

Welcome to LQ!

Quote:
Originally Posted by vvwolfe View Post
I have 2 T60 laptops
both had Unbutu linux 9.10
I wanted 1 to dual boot with winxp
An aquaintance of mine told me would be easier with a clean start from windows first and I should use command
sudo dd if=/dev/zero of=/dev/sda bs=512 count=1
to zero the hd as I wanted xp installed first
Your friend gave you instructions for clearing the MBR. You can use the XP Install disk to 'fixmbr' to get the M$ loader or use the GNU/Linux install disk to repair the bootloader.

Quote:
Originally Posted by vvwolfe View Post
Now when i try to boot xp from disk I get error no valid operating system
In bios Sata is set to compatability

Linux boot disk will run/install no problem

Can anyone suggest what the problem is? why will linux load from disk but not windows xp??

Xp boot disk is recognized by laptop with windows already installed

Thank you
You did have a valid XP OS installed to begin with?

If you did have a dual boot system then you won't be able to boot the XP until the bootloader is repaired. If you want to reinstall XP & GNU/Linux then you should first install the XP to a partition and then install the GNU/Linux to another partition. Most newer GNU/Linux will use the GRUB bootloader but you could still use the M$ if desired. Easier to use the GRUB/LILO loaders.

Just a few links to aid you to gaining some understanding;

Linux Documentation Project
Rute Tutorial & Exposition
Linux Command Guide
Utimate Linux Newbie Guide
LinuxSelfHelp
Getting Started with Linux
Bash Beginners Guide
Bash Reference Manual
Advanced Bash-Scripting Guide
Linux Home Networking


The above links and others can be found at 'Slackware-Links'. More than just SlackwareŽ links!
 
Old 10-15-2010, 09:48 AM   #5
vvwolfe
LQ Newbie
 
Registered: Oct 2010
Posts: 2

Original Poster
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Onebuck-->
I did not have a dual boot system but I wanted to
I originally had xp on both machines then I decided to change to linux for both I was bit short sighted I still need to have a windows machine at least for now


hughetorrance -->
I know it might seem stupid but how would i find out what boot loader I am using?

prayag_pjs -->
I only have install disks for xp and win 2000, but my disk is fine as I said it loads linux disk with no issue.
 
Old 10-15-2010, 10:56 AM   #6
yancek
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Here's a link to the microsoft site explaining repairing the mbr.

http://support.microsoft.com/kb/314058

After following these instructions, you should be able to install xp?
Then install your Ubuntu.
 
  


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