Windows 7: Windows 7 Dual Boot Can't Access Inactive Partitions C: Drive

I have a laptop that I have created 2 partitions on with a dual-boot configuration, both are Windows 7 Home Edition. Everything worked as desired until the primary partition's registry became corrupted (OK, I screwed it up). After spending a few days trying to fix it, I decided that there wasn't enough on it I wanted to save, so I just re-installed Windows 7 (as a new installation) on the (primary) partition. Everything seemed to work fine until I booted to the secondary partition and attempted to install an application on the C: drive (the application forces the location, so it wasn't by choice). It was then that I realized I have no access to create anything on that partition's C: drive. I have full rights to the primary partition's C: drive, just not the secondary, no matter which partition I boot to. Additionally, when I boot to the primary partition, I can see both, when I boot to the secondary, I don't see the primary. I have scoured the net for a solution and nothing has worked. I can't get access to take ownership, I can't change Security attributes, it is not set to Read-Only, it just comes back with the irritating "Access Denied" message whenever I try to create anything on that partition's C: drive.

Thanks in advance!

- Jim

Post a snapshot of Disk Management:
To open Disk Management, press Windows key+r, type diskmgmt.msc and press Enter or click GO. Make it full screen.

Vista and Windows 7: How to Use the Snipping Tool in Vista - Vista Forums (says it's for Vista but also works with Win 7).

Once you have the image saved, click on the Paperclip Icon next to the Smiley Icon. In the Manage Attachments window, click Browse and navigate to where you saved the image and select it.
Click the Upload button.
Close the Manage Attachments window.
Click on the Paperclip Icon again and select the image you uploaded. It will be placed in your post.

Note: Do this from both booted partitions please.

Did you correctly boot the installer to install Windows 7? Otherwise both OS"s should show as C when booted into one. If not I would reinstall the incorrectly installed OS.

We can tell more from the Disk Mgmt screenshot Rich requested. It would be good to have it from both OS's.

I had thought I had correctly booted the installer, but since things don't work as they did beforehand, obviously something is wrong, why not that?

This is my first time posting here, hopefully I followed your instructions properly to upload the snipped pngs of each partitions disk manager display.

Thanks again.

- Jim

When booted into the secondary, in Disk Mgmt rightclick on the unlettered first partition to issue a Drive Letter - Add, Change, or Remove in Windows 7 - Windows 7 Forums

OK, now when I am booted to the secondary partition, I can see the primary partition.

Unfortunately that still leaves me in the same situation I was in. When I am booted to the secondary partition, I can't create anything in the C: (root) folder. What next?

Thanks again for helping with this.

- Jim

May I ask why you have two of the same Windows 7 versions installed in a Dual Boot. This is almost always unnecessary and wastes focus from having one perfect install following the Best Practices layed out in Clean Reinstall - Factory OEM Windows 7 which are the same for retail. Hence you complain in one post of having the original install go corrupt, and now the secondary can't install to the root - what exactly are you trying to install there anyway?

Run SFC -SCANNOW Command to check System files, create another Admin level account to see if that solves it. But first I'd make sure I come close to using only the tools and methods which assure a permanently perfect install.

Yes, I do have a reason for having 2 installs on one laptop which I don't want to layout here, but I appreciate the concern, and yes, they are both retail and legal with their own legally purchased license. I know the configuration can work since it was working perfectly before the reinstall. What I am trying to install on the secondary partition is a program that forces the install folder as C:. Unfortunately I don't have the source or the ability to change the install folder for it.

A sidenote is if you know of a good application that tracks everything that changes (files, registry entries, etc) during an install, a second (not as preferred) option would be to install the program I want on the primary partition, copy it to the seconadry making all the needed associated changes.

I have run SFC - SCANNOW without error.

Is there anything else that I can try?

Thanks again.

- Jim

Jim, what's the problem with installing the program to C? This is the reason for correctly installing from boot, so that Windows 7 always sees itself as C when booted. You have done this, so just let the programs install to C as intended. They should be on the OS partition anyway since by writing registry keys they integrate themselves into it until uninstalled.

I wish it was as easy as you make it sound. It was this easy prior to the re-install. As I stated in the initial post, I have NO write access to the C: drive when I boot to the secondary partition, which is where I am trying to do the install. So the install bombs as soon as it tries to write to it.

- Jim