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So basically, I made a goof-up and removed all permissions except Read-Only on my external HDD. Somehow Windows 10 allowed me to remove the permissions for the Administrator also.

Now the HDD is all Read-Only and I am unable to do anything on it, except read from it.

Is there some way I can revert the permissions on the Disk and all its folders/files?

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  • What is the filesystem on the external drive. It doesn't sound like fat or NTFS.
    – Argonauts
    May 14, 2016 at 11:58
  • If the drive is formatted with NTFS, you need to take ownership of all files, after that you can set permissions even if you don't have any existing rights.
    – Peter Hahndorf
    May 14, 2016 at 14:05
  • The file system on the disk is NTFS, it is a Toshiba 2TB External HDD. The error message I get while trying to change permissions is: "Failed to enumerate objects in the container. Access is denied". How do I change the ownership? Not sure on it, as I can see only change permissions in the Properties tab.
    – gagneet
    May 14, 2016 at 22:17
  • Found the ownership (advanced button, and then in the new dialog box, on the top, it says Owner and Change), it is assigned to Administrator, should I change it to my user and then try to change the permissions again?
    – gagneet
    May 14, 2016 at 22:24

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