Dual Boot: XP and 7: Want to Format the XP and move MBR to 7

I have two internal hard drives. I had XP for many years until the recent loss of support for XP by Microsoft, so I decided at that time to install Windows 7 on one of my other hard drives. To make my transition to 7 smoother, I installed 7 on a previous storage drive, basically dual-booting for a little while. Now I would like to format and clean out the XP drive and make that my storage drive - but my system is still viewing the XP drive as the "active, boot drive" and won't allow me to format it. Even if I unplug that drive and attempt to boot only to the 7 drive, it won't let me.

I did some searching and found this thread, many years old, that describes my problem exactly:

Moving MBR to Windows 7 drive

I DL'ed, burnt to a CD Mini Tools Partition Wizard, and was able to convert my Windows 7 Drive to Active. It displays the Windows 7 HD as: Primary Active & System, but with the XP disk removed from the computer, I am still unable to boot to this HD. I attempted the x3 repair process with my Windows Disks, and it isn't even seeing the Windows 7 OS for some reason, and is asking for HD drivers...

I think I am failing to apply the MBR to the Windows 7 HD and not sure which way to go now.

One other thing, not sure if it is related, but the Windows 7 disk also has a 8MB Unallocated partition on it.

Here's the Screenshot of the Disk Management for my computer, Boot Drive D: is my previous XP drive.

Unplug the XP hard drive, boot into BIOS setup to set Win7 hard drive as first hard drive to boot, save changes and exit.

Reboot into the Win7 installation media to run Startup Repair - Run 3 Separate Times until Win7 starts and holds the System flag signifying it is booting itself.

You can then plug back in the XP HD, boot it when needed using the one-time BIOS Boot Menu key. When the time comes I would wipe it with Diskpart Clean Command to get it cleanest before repartitioning in Disk Mgmt as a data drive.

You are wise to have your data drives as Logical so they can stay plugged in during these operations, since boot files cannot be derailed to a Logical drive. Otherwise the installer may place the boot files on the first Primary partition in order.

I have done that as mentioned in my initial post, I tried it again after your response. There are no OS's even listed in the OS window asking me to repair. The only time an OS shows up is if my XP is plugged in.

Thanks for the help, I got a copy of Easy Recovery Essentials, burnt it to a CD, and booted up into it. It detected my OS, ran some repairs, and now I am booting into Windows 7 with no problems. Disk Management now lists it as Boot & System. I am now wiping my old XP disk. Glad I found this forum, I can see a lot of problems solved in this place.

I've been waiting to hear some reports about their boot disk. Thanks. We should add it to tutorial.

Hi there

People often make this stuff too complicated

Windows 7 drive. As it's a separate HDD - simple.

ON THE W7 HDD (not the XP one)

1) load W7 install or recovery disk
2) choose repair system
3) command mode and type the following

cd /bootrec
fixmbr
fixboot

Now you can install / boot windows.

Forget about bootmanagers etc - if you want to dual boot I'd simply use the BIOS menu when starting your machine and choose the HDD you want to boot from - XP or W7. As you've got two separate HDD's then this IMO is the best way.

Once you've got XP finished with simply set the Disk order in the BIOS so W7 HDD boots.

Can't understand all this other complicated stuff like easyBCD and whatever.

Cheers
jimbo