Convert Dynamic Disk back to Basic Disk WITHOUT data loss

Here is the story.

I had a Windows 7 machine that I was using as a test bed for various applications and settings.
I was trying to recover some files from an old hard drive. I attached the drive via a usb dock. And I was able to grab most of the files I wanted via a rescue start up disk.

I then wanted to delete the partitions on that old drive and format it. Simple enough. But the damaged drive was still giving me problems. I should have used the boot CD to kill it there. But instead, like a maroon, I booted into Windows & and tried to just ‘add’ the disk in the disk manager.
But somewhere in my sleepiness after a 16+ hour day I converted my Windows 7 drive to a dynamic volume that included the messed up drive!
Before I realized what I had done it was too late.

What to do?

With the damaged drive not working my ‘dynamic volume’ was now in accessable after restarting the machine!
So on with the searching for a solution.
I read over and over how a Dynamic Disk could NOT be converted back to a Basic Disk.
Even Microsoft say this is so!

But I knew I had read somewhere about editing the MBR and setting the drive back to basic year ago. I may have even done it.
And after many days and many hours I found a simple elegant solution in an old post that WORKED!

I simply pulled out the affected Windows 7 drive and used my HDD dock to attach it to one of my main machines and edit the MBR sector to change the disk back to a Basic Disk.

Basically it involves using a freeware hex disk editor to open the MBR and just change one sector(sector 0 location 1C2) value from ’42’ to ’07’ saving the change. Then running a check disk and fix (chkdsk x: /f).
I put the drive back in booted and after a few moments of ‘recovery’ at start up my entire OS was back!
Here is the post.

It is very detailed and easy to follow.
I hope no one needs it but if you do this is good to have in your tech notes file.