Windows 10: Hard drive inaccessible after upgrade - (apps stored on drive run)

Okay, here's a weird one. And of the searching I've done, it seems others who've had this problem have had encryption, which I don't.

Problem: When I click on my H: drive or try to access it from the command line, it gives me an access denied error. However, all of the applications that I have installed on that drive run without issue. So, there is some access there. (See attached images. The first shows the hard drive state in diskmanager and in windows explorer. The second image shows the minecrafter launcher profile (that it is stored in H: and the application running, proving that there is some access.






System: Home built PC: (C 240GB SSD for OS, (E 1TB HDD for file storage and backup, (H 1TB HDD for large applications and video editing files. All drives are Simple, Basic, and none have encryption. All use the SATA connectors.

Process:
I had Windows 7 Home 64 bit with, among many other things, Comodo Internet Security, Virtualbox, ImageDisk.
During the upgrade process, I noticed that Windows 10, during the upgrade, ran the file system check and fix "problems" on the H: drive.
(Side note) Having forgotten to uninstall Comodo before the upgrade, I did not have network after the upgrade. The fix was non-trivial as I had to use a second computer to download the unofficial comodo uninstaller. Reboot. Uninstall the network devices. Reboot. And once Windows 10 was up and running, it reinstalled the network devices and the network was available.
Still, whether before or after the Comodo uninstall and reinstall, the uninstall of ImageDisk, or the uninstall of the Virtualbox network device, I have no access to the H: drive.

If I have missed any information, please ask and I will try to provide. Are there any suggestions on what I can do to unlock my secondary drive?

:)

 

Windows 10 I/O Device Error

Unfortunately I am getting the same message with an external HD. I have two external drives, a 1TB drive which is working fine, and a 3TB drive that I keep getting a disk io error when trying to access. The directories off the root show up fine (after
a short delay), but the data underneath is inaccessible. I've tried running chkdsk, but the app returns a message that the drive data is RAW(?) and not readable by the app. I tried running the disk scan app from the properties page, but that says the drive
is inaccessible. The drive was working fine about six months ago, but no longer.

 

Windows 10 backup system image

When i try to create a system image using windows7 backup system image in windows 10 i get an error that the backup drive is inaccessable i run dism restore health and sfc scannow there are no errors my hard drives are all artached and working fine so
why is it tell me the drive is inaccessable?

 

In the second image, you can see that there is a doubled blue arrows on the Minecraft icon. I've read that this means that file or files are compressed. Would this have an effect on my H: drive issue?

 

As it turns out, it was a permissions issue. I needed to open the Properties -> Security -> Advanced section, modify the permissions for SYSTEM and Administrators, and add the USERS and Authenticated Users groups.