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Dual Boot Vista and XP (Vista already installed) How to install XP onto your Vista computer Rate Topic: -----

#1 William_Wilson  Icon User is offline

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Posted 17 April 2007 - 09:52 PM

If you want to install Vista onto an XP computer, try the reverse tutorial: Dual Boot XP and Vista (XP already installed)

I'm not going to post any stats on XP, if you're running Vista, you certainly can run XP :)

*You will need your XP and Vista installation discs!

Step 1 - Partition the Drive:
Vista comes with a nice partitioning tool, so i'll be using it instead of partition magic this time around.
-right-click computer under the start menu and choose "manage"
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-right-click the drive you want to partition, and select "Shrink Partition"
-The amount you shrink the partition is the amount of space used for the XP partition, so i would suggest making it at least 3-4GB in size, as a full XP installation will take 1.5GB on it's own.

-now right-click the unallocated memory and select new basic partition.
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-Choose NTFS file system, this will save formatting before installation.
-name the drive anything you like, i chose "XP"
-click next on the rest of the screens and finish.

once the formatting is finished you will have something like this:
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*this new partition is where your XP installation will go, so take note of it's location, in case there are multiple partitions on the drive (there will now be atleast 2).

Step 2 - Install XP:
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wait while XP installs (I won't go into detail, there are many tutorials on this, and it is reasonably straight forward)
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Now that XP has installed, it attempts to boot for the first time... all goes fine, video settings, networking, then the lovely welcome screen as usual.

You restart, expecting a boot loader screen... followed the tutorial this far, and now you seem to only have XP... well not quite, I wouldn't leave you hanging without giving you a proper dual boot.

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here lies the only real issue with installing XP after Vista, but it's a quick fix if you have your Vista CDs/DVD handy.

The problem is that Vista and XP use different boot loader utilities in the MBR (Master Boot Record) of your hard drive. XP does not recognize Vista, but Vista will recognize XP, so we need to remove the boot loader that XP just put in with the old Vista boot loader. So restart once more, but this time with your Vista disc in the drive.

Step 3 - Fix Boot Loader:
Vista will load the GUI files, and then display the loading splash screen.

-Click "Next" on the first screen
-Once the "Install Now" menu (do not click Install Now) choose "Repair Your Computer":
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-You will be prompted to choose the OS to repair. Don't worry if Vista is the only OS that shows up, even after a search.
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click "Next"

-I realize there is a "Fix Startup" option, but it's been my experience that it doesn't work, and this method will.
-choose to open a "Command Prompt":
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type in the command prompt the following 2 lines (separatly):
Bootrec.exe /fixMBR
Bootrec.exe /fixBoot
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-close the prompt and restart
-now that Vista controls your boot loader, the process is mostly finished, now we need to inform Vista that XP is installed, as to enable the boot loader selection screen.
*There are programs such as VistaBootPRO that will do this for you, but it requires .NET framework, etc, so I did it the manual way.

Step 4 - Edit boot.ini:
In Vista, the boot.ini is not editable directly, as the file itself is hard to locate, so we will be modifying it through "Boot Configuration Data Store Editor" bcdedit.exe:
(Just as an explanation, the loader type for XP is an NT Loader, hence the use of ntldr)

-first open a command prompt with administrative privilages (right-click and choose "run as administrator")
*Note the following 2 answers from bcdedit for each item are acceptable:
"The Operation Completed Successfully"
"The Specified Entry Already Exists"
Be sure to type each line carefully (replace C in the first line with the drive containing your Vista installation):
bcdedit –set {ntldr} device partition=C:
bcdedit –set {ntldr} path \ntldr
bcdedit –displayorder {ntldr} –addlast
bcdedit -set {ntldr} description "Microsoft Windows XP"

The completed bcdedit file should resemble this:
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-This will correctly add XP to your boot sequence, and even name it properly instead of "Earlier Version of Windows"
-the displayorder line also allows the entry to be visible under the advanced settings of your computer properties.

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Vista is the default boot, if you wish to change this to XP it can be done by setting {current} to addlast, or under the computer -> properties -> advanced settings.

If all done properly, XP and Vista will dual boot properly!

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Replies To: Dual Boot Vista and XP (Vista already installed)

#2 MarkoDaGeek  Icon User is offline

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Posted 24 April 2007 - 07:32 PM

Awesome tutorial man.
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#3 William_Wilson  Icon User is offline

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Posted 24 April 2007 - 08:38 PM

thanks, i copied the data i had in the bcdedit file from writting the other tutorial so as i could figure out what to add to the bootloader (a little bit of cheating, but saved me a lot of reading on the MS site)
There is a debug option in the boot file which i left out for XP, since it never really comes into play... and if it does.. let's just say the OS is toast anyway.
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#4 bassamnz  Icon User is offline

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Posted 06 May 2007 - 03:33 AM

when i try to install xp in unloads all the files blah blah and the crashes to blue screen.. help
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#5 Smasher  Icon User is offline

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Posted 15 June 2007 - 05:42 AM

Please william, I tried doing the dual boot, but I have this problem: I did the partition just as illustrated, I partitioned my second hard drive (d:) the vista is on the first drive.
when I try installing windows xp, it says my computer doesn't have any hard drives. I have an HP pavilion dv9000t notebook with dual 120 gb hard drives, intel core 2 duo T7200 @2.0 GHz, 2 GB RAM, 512 MB nVIDIA Go 7600

Hard drives are: FUJITSU MHW2120BH ATA DEVICE (2 of these).

thank you so much for your help


Smasher
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#6 no2pencil  Icon User is online

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Posted 15 June 2007 - 05:47 AM

View PostSmasher, on 15 Jun, 2007 - 05:42 AM, said:

I partitioned my second hard drive (d:) the vista is on the first drive.
when I try installing windows xp, it says my computer doesn't have any hard drives.


Are you talking about two physical drives, or a single drive with dual partitions?
Do both drives show up in the bios?
What file system type are the drives formated with?
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#7 William_Wilson  Icon User is offline

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Posted 15 June 2007 - 08:12 AM

Based on what i've read on your laptop, it only supports SATA drives, and yes #2pencil it does support 2 physical drives.

XP has been known to have issues installing on SATA drives.
The drivers which hopefully came with your computer will be necessary. When setup begins you are given the option to install other drivers and you will need to install your SATA drivers so XP can find your drives. If you have a floppy use that, otherwise you will need to search the driver cd or manufacturers website for your drivers.
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#8 Smasher  Icon User is offline

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Posted 16 June 2007 - 02:20 AM

I was finally able to do it, but when I got to the final step, (bcdedit -set {ntldr} device partition=C: (and so on)
it gave me this error:
An error occured while attempting to reference the specified entry. The system cannot find the file specified.

Any ideas?

thanks
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#9 William_Wilson  Icon User is offline

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Posted 16 June 2007 - 10:05 AM

In the odd case the entry does need to be created first, try using:
bcdedit /create {ntldr} /d "Microsoft Windows XP"
first, then type the commands listed in the tutorial
-NOTE you will not need to run the command to name the entry as this will do it already.

If this does not solve your problem please post the output of bcdedit.exe
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#10 Smasher  Icon User is offline

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Posted 16 June 2007 - 07:33 PM

View PostWilliam_Wilson, on 16 Jun, 2007 - 10:05 AM, said:

In the odd case the entry does need to be created first, try using:
bcdedit /create {ntldr} /d "Microsoft Windows XP"
first, then type the commands listed in the tutorial
-NOTE you will not need to run the command to name the entry as this will do it already.

If this does not solve your problem please post the output of bcdedit.exe


Worked like a charm! I'm soooooooooooooo grateful. Even my laptop was so happy it wanted to buy me some beer! I can't thank you enough! You're the man!

Smasher
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#11 Smasher  Icon User is offline

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Posted 19 June 2007 - 05:47 PM

View PostSmasher, on 16 Jun, 2007 - 07:33 PM, said:

View PostWilliam_Wilson, on 16 Jun, 2007 - 10:05 AM, said:

In the odd case the entry does need to be created first, try using:
bcdedit /create {ntldr} /d "Microsoft Windows XP"
first, then type the commands listed in the tutorial
-NOTE you will not need to run the command to name the entry as this will do it already.

If this does not solve your problem please post the output of bcdedit.exe


Worked like a charm! I'm soooooooooooooo grateful. Even my laptop was so happy it wanted to buy me some beer! I can't thank you enough! You're the man!

Smasher


This is Smasher again. I had to disable the native SATA support in the BIOS before my winxp cd could recognize the HDDs. Now when I re-enable it, vista works fine, but xp shows the BSOD (blue screen of death) Anyone know how I can do that? HP Pavilion dv9000t customisable, 2gig ram, 2 120gb hard drives, disk 0 has 2 partitions c: and e: witth vista on c: and hp recovery on e: disk 1 has 2 partitions d: and f: winxp is on f:

Anu help will be highly appreciated

Smasher
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#12 bis_003  Icon User is offline

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Posted 09 July 2007 - 05:12 AM

I recently bought a new desktop computer and am finding (as I'm sure others are) that Vista is really cool, but torture on anything made before, well, April 2007! I just read this post and noted that you can partition the current hard drive to dual-boot. But what about a SECONDARY hard drive? I have access to a second hard drive and would be interested in loading XP on that one, if possible. Are there steps that I would need to take to do this? Any potential problems forseen? Please help, thx!!

This post has been edited by bis_003: 09 July 2007 - 05:31 AM

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#13 William_Wilson  Icon User is offline

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Posted 09 July 2007 - 07:53 AM

Samsher:
what is the error on the BSoD, please be specific.

bis_003:
All drives are seen as partitions to a modern OS, it will be exactly the same installing on 2 hdds as opposed to partitioning the first.
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#14 phorum.ws  Icon User is offline

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Posted 16 July 2007 - 03:25 AM

what is we do not have he original Vista DVD? my laptop came with vista instaled an did not come with a vista dvd, so how would we get around this (have been reading alot of people with same problem accross the web? thanks in advace guys. :crazy:
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#15 monl  Icon User is offline

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Posted 23 July 2007 - 08:50 AM

Hi. With a pre-installed Vista on my desktop computer, I tried adding XP to make it dualboot following the tuturial. Everything worked out well until I got to the point where I was at the command prompt to type the bootrec.exe command.

Bootrec.exe /fixMBR was successful. But when I typed Bootrec.exe /fixBoot, it said to make sure that all drivers are loaded and the volume is not corrupt. I tried booting it from the hard disk but it still boots up on XP. I don't think the volume is corrupt (C:) since it used to boot from Vista till I installed XP. I checked C: and everything still seemed intact.

So I seem to have hit a blank wall. Would appreciate the help.

Thanks!

monl
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