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Windows 7: Stop sys restore pts from being deleted in Win 7 when dual booting

11 Apr 2011   #1

Windows XP Pro 32 bit, Win 7 Home Prem 64 bit
Stop sys restore pts from being deleted in Win 7 when dual booting


I applied the manual fix for KB926185 described in the tutorial provided (very well-written) under the Vista discussion. However, I found that every time I rebooted, the deleted \DosDevices\K: key kept on reappearing after each deletion even though it was listed under Offline subkey.

I have Win 7 Home Prem 64 on one hard drive and Win XP Pro 32 bit on a second hard drive. There are a number of partitions on the Win XP drive so that is why Win 7 showed up on K:

Anyway, I tried the deletion a number of times, but the K: drive would reappear and I could access the contents, it was not just showing up and appearing blank as some postings to the tutorial indicated might happen.

One other bit of information is that besides the MountedDevices Key in the registry, there is also a MountedDevice1 Key. There was a reference to K: there also. I did not do anything to the subkey for K: under MountedDevice1. It had a different value there than it did under MountedDevices. Other postings to the KB926185 tutorial also mentioned MountedDevice1 but it was unclear whether something needed to be done to it or whether deleting the subkey would cause additional problems.

Finally, the only way to make the drive "go away" was to disable it through the device manager under XP.

Does anyone have an idea why the drive would keep reappearing? Thanks.

My System SpecsSystem Spec
11 Apr 2011   #2
Microsoft MVP


I find that cross-System complications disappear on Dual Boots with separate HD's when they are booted via the BIOS.

This truly make's HD's independent to come and go as you please, whereas Windows-managed Dual Boot interlocks them, requires surgery to remove, and presents compound complications in some cases.

To accomplish this, unplug the other OS HD during install. Afterwards plug back in the other HD, set preferred to boot first in BIOS setup, boot the other OS HD using one-time BIOS Boot Menu key.

If you'll post back a screenshot of your full Disk Management drive map, we can look it over and advise you on doing this or anything that might cause problems. Use SNipping Tool in Start Menu.
My System SpecsSystem Spec
11 Apr 2011   #3

Windows XP Pro 32 bit, Win 7 Home Prem 64 bit

Thanks for your quick response. When I installed Win 7, I had the Win XP drive unplugged. I then downloaded and installed the easybcd tool. I plugged the Win XP disk back in and then rebooted in Win 7. I ran easybcd to fix the dual boot menu. (Also, had to use Notepad to edit the boot.ini created in the Win 7 root because the Win XP disk had some backups of the Win XP root partition and spurious entries were created in the file).

I do not understand how using the bios to dual boot will address the system restore point problem. It will definitely simplify the dual boot process; however, I am not the only one using this PC and the other users would not find using the bios the simpler procedure. Disabling the Win 7 drive within Win XP definitely keeps the Win 7 partition from being seen by Win XP and the disk does not show up under disk management.

Thanks again for the quick response.
My System SpecsSystem Spec


 Stop sys restore pts from being deleted in Win 7 when dual booting

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