I have a dell XPS 8700. The system came with windows 8 preinstalled. I spent 3 minutes with Windows 8 and was frustrated. I don’t have the time or inclination to learn it right now. I want to do the same as I did with XP slowly migrate.
I then proceed to use my Win 7 disk which is separately licensed and can be installed on different machines. I have a Microsoft Action Pack subscription. After the install started I chose advanced and looked through the listed partitions. I wanted to keep the other partitions as backup so I proceeded to install on the main OS partition. Cannot install, GPT partition. I know win 7 64 but supports GPT and I have UEFI hardware. So idiotically I deleted the partition and re-created. Hmm call DELL. After some back and forth language issues etc. Deleting the partitions was bad and unrecoverable. I guess that is why all the warning messages. They’ll send a disk. Not really interested. I have other licenses to cover win 8 should I decide to migrate. I just wanted to see if the original OEM could be saved given the “recovery” partitions
So the real question is. How setup the system to boot windows 7 onto a GPT disk.

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bbaoIT ConsultantCommented:
i guess the most simple way to fix is:

1. disable UEFI/GPT in BIOS
2. boot from W7 disc
3. choose Advanced settings and enter Command Line mode
4. run DISKPART to remove all partitions on the disk
5. reboot from W7 disc
6. install as default.
Jackie ManCommented:
So the real question is. How setup the system to boot windows 7 onto a GPT disk. <- It is not possible to do the Windows 7 install if you want to keep the win 8 recovery partition.

You need to delete all partitions if you want to install windows 7.

The steps are as follows:-

1. Launch Intel Rapid Storage Technology application.
2. Select Accelerate tab and then click Disable acceleration.
3. Under SSD Configuration, click Reset to available to reset volume.
4. Restart the system and change ‘Boot Mode’ back to ‘Legacy’
5. Now try to install windows 7 using the steps outline in
6.Please ensure you do a clean install after deleting all the partitions.

☠ MASQ ☠Commented:
Personally I'd take Dell up on their offer of a disk, their downgrade OEM Win7 has a far less restrictive licence than your Win7 MAPS one which has a Not for Distribution/Production use restriction.

Otherwise, have you already disabled the UEFI Safe Boot on the XPS machine?  Did you also disable UEFI?  Win 7's installer needs to boot in a UEFI environment in order to install onto the GPT partition. If you are booting from the XPS' BIOS instead then although you'll be able to format the partition as GPT, and Windows can see it, Windows 7 will continue to insist it is installed to MBR.
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some notes :
1-you can use W8 kust like W7 if you install classic shell :
2-to install something on a W8 system, you need to disable secure boot; here's how :
mohrkAuthor Commented:
bbao - Yes I knew this was the last resort. The goal was to use the hardware to its fullest.

 jackieman - I wish I had found that before I deleted the OS partition during the install of 7. Articles still don't tell you how to install win 7 to UEFI GPT partition from bare metal. Found some articles on MS about running scripts to setup partitions correctly Win7 still refused went to fall back position and realized it was also my kluged "slipstream" image was a problem.  

 MASQUERAID - I will ask for the disk again they say the only option. My MAPS is production for internal business use. I think of a name, call it a business and I can then use the software within the bounds of the EULA probably...

nobus - the question was technical in the form of WIN7 --> GPT --> boot. It's nice to know that 8 cam be made to look like 7 and I may use that next time. Thanks for the info.

If everyone is sure I can't do bare metal -->GPT-->win7 --> boot then I guess I have may answer.

Thanks everyone.
You can do a bare metal install of W7 on GPT. Just not with the W8 partition still there.

Here is a guy that found a work around to get it to work on a greater than 2 gig hard drive,
It might give you an idea  or two:

Found one link so far. Here is how this guy did it on a 3TB:

I set up a 1TB GPT drive and installed Win 7 Pro 64-bit on it. I then used Paragon to copy the old Windows 7 partition in place of the new Windows partition. At this point, the GPT drive booted into the old Windows 7 OS just fine.

I then converted the 3TB drive to GPT and cloned the 1TB drive to the 3TB drive. I was then able to adjust the partitions on the 3TB drive to use all the space available.

from this Q:

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mohrkAuthor Commented:
You guys were the closest and the last post was right on the money and even tells me how to get from where I ended up to where I would like  to be using free software!
Thank you much.
Glad it helped you get where you wanted to go.   : )
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