I had to share my laptop with someone, so I tried to change the access permissions of my storage drive, while windows is on my SSD. But somehow I lost all permissions to my drive.
After trying all icacls techniques, I did a reset and a fresh install, and it still doesn't solve the problem.
The reason reset and fresh install (of your OS on another drive) didn't help is because those aren't OS permissions, they are file system NTFS permissions which are stored as part of the file system on the drive itself.
To reset the NTFS permissions for everything on the drive (and this would've worked regardless if your OS had been reset or not), Open Commend Prompt as Administrator and first take ownership on the files/drive with the TAKEOWN command:
TAKEOWN /F E:\ /R /D Y
Once you have ownership, then you can reset the permissions using icacls:
icacls "E:\" /reset /T /Q /C