32GB USB "Suddenly" is Write Protected; Cannot Format or Delete Files?

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  1.    13 Jan 2019 #1

    32GB USB "Suddenly" is Write Protected; Cannot Format or Delete Files?


    I don't see a physical switch on the drive to enable/ disable write protection. Depending on how I went about to solve this I either got the message Write Protected or Read Only. Generic SanDisk Ultra 32GB stick. It was formatted fat32 and I got the message that I needed to format to NTFS in order to write larger files to it which I did and successfully formatted to NTFS. In the process of writing 2 video files I got an error message for one of the files though I do not recall what it said. One of the video files plays normally the other one it says unsupported. Both of the original files play fine on the computer. I do not recall what if any activity I used the disk for previously. I tried several methods to remove the read only/ write protection:

    https://www.easeus.com/partition-man...indows-10.html

    From the above link I tried the Diskpart command fix which did not work and when I tried the Regedit.exe fix and created a new StorageDevicePolicies key and that did not work.



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    And I also tried this:


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    All to no avail. So any further input appreciated. Just to reiterate I want to be able to format and or delete files from the USB flash drive and remove the Read Only and Write Protected. TIA.
      My ComputersSystem Spec

  2. Caledon Ken's Avatar
    Posts : 12,849
    Windows 10 Pro x64 Build 1809
       13 Jan 2019 #2

    Hi.

    Have a look at this.

    https://blogs.technet.microsoft.com/...ead-only-help/

    Command to remove readonly using diskpart


    Ken
      My ComputerSystem Spec

  3.    13 Jan 2019 #3

    If the diskpart stuff doesn't work, look for special clean/reformat utilities from the UFD's maker. If those don't work, toss it out and buy another one. This is a primary symptom of a failing/failed UFD.
    HTH,
    --Ed--
      My ComputersSystem Spec

  4. Brink's Avatar
    Posts : 36,219
    64-bit Windows 10 Pro build 18841
       13 Jan 2019 #4

    As Ed posted, this is usually an indication that the USB has died when it suddenly happens for no apparent reason.

    You might also take a look at the tutorial below to see if it may help if the USB is not dead.

    Enable or Disable Disk Write Protection in Windows | Tutorials
      My ComputersSystem Spec

  5.    13 Jan 2019 #5

    @Caledon Ken

    @EdTittel

    @Brink

    Thanks to all for suggestions. Not home at the moment but will try again tomorrow.
      My ComputersSystem Spec

  6.    14 Jan 2019 #6

    You can also try the clean cmd to see if that kicks it back into action.
    Run
    Diskpart
    list disk
    select disk x (where x is the number of the USB drive)
    clean
    exit
    Then go to disk management to initialise it.
      My ComputerSystem Spec

  7.    14 Jan 2019 #7

    Bastet said: View Post
    You can also try the clean cmd to see if that kicks it back into action.
    Run
    Diskpart
    list disk
    select disk x (where x is the number of the USB drive)
    clean
    exit
    Then go to disk management to initialise it.
    Thanks for replying. I already tried that : ) See the fourth pic in my first post above. Tonight when I get home I am going to try the other suggestions.
      My ComputersSystem Spec

  8.    14 Jan 2019 #8

    phaedruspress said: View Post
    Thanks for replying. I already tried that : ) See the fourth pic in my first post above. Tonight when I get home I am going to try the other suggestions.
    I think the white background to cmd prompt threw me. :)
    Then it does appear the drive has failed. I hope you manage to revive it.
      My ComputerSystem Spec

  9. Compumind's Avatar
    Posts : 631
    Windows 10 Pro x64, Various Linux Builds, Internet Security Specialty.
       14 Jan 2019 #9

    phaedruspress said: View Post
    Thanks for replying. I already tried that : ) See the fourth pic in my first post above. Tonight when I get home I am going to try the other suggestions.
    I would also like to add to the great comments above, one item...

    If you are using a OEM USB OS Restore Drive, like HP or Dell, you will also find that you cannot easily reuse those 8 GB OS resident drives.
    Write protected. There are Russian utilities to do this, but is it worth the time? I say no.

    If your SanDisk is within warranty, it is a fairly easy process to replace:

    Online RMA Request

    That's all.
    Last edited by Compumind; 16 Jan 2019 at 22:00.
      My ComputerSystem Spec

  10.    14 Jan 2019 #10

    The DiskPart screenshot shows the USB stick recognised as only 8GB, not 32GB. Have you checked that it's a genuine SanDisk Ultra stick and not a fake 8GB stick re-engineered to appear like the capacity is 32GB? Suddenly showing a reduced capacity and changing behaviour is also a classic symptom of a fake stick when you copy files over to it that overwhelm its 'real' capacity.

    I've used tools like PassMark BurnInTest, ChipGenius, RMPrepUSB's FakeFlashTest, Flash Drive/Card Tester and H2testw to determine the 'real' tested capacity versus the 'claimed' (and entirely 'fake') capacity and whether chip controllers are branded or generic.

    Have a look at this RMPrepUSB article for (much) more info about testing for fakes and download links for testers. IMO it's a very interesting read, if nothing else.

    Hope this helps...
      My ComputerSystem Spec


 
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