Windows 10: Remove GPT partition and Reset USB flash drive back to factory setting

Discus and support Remove GPT partition and Reset USB flash drive back to factory setting in Windows 10 Support to solve the problem; Hi, I have a USB flash drive that has previously been used by Rufus so it has a GPT partition style. I'd like to wipe it clean and put it back to... Discussion in 'Windows 10 Support' started by sportsfan148, Aug 30, 2019.

  1. Remove GPT partition and Reset USB flash drive back to factory setting


    Hi,
    I have a USB flash drive that has previously been used by Rufus so it has a GPT partition style. I'd like to wipe it clean and put it back to factory settings (MBR partition, FAT32 etc).
    Ive been told before that GPT has a second (backup) partition table at the end of the disk and I'm not sure if clean deletes that. I know there is a Clean All option but I don't know what that does. Does a Full Format instead of a quick format do exactly the same thing as Clean All would do? I want to ensure that it is free from all GPT partitions. What is the correct way to do it with Diskpart? Below, Ive listed my standard commands for resetting a standard MBR flash drive. I always use convert MBR just to be sure *Smile What else do I need to add to these commands to ensure GPT partitioning is fully removed and the flash drive is properly returned to factory settings?
    diskpart
    list disk
    select disk #
    clean
    convert mbr
    create partition primary
    format fs=fat32 quick
    active
    assign
    exit

    :)
     
    sportsfan148, Aug 30, 2019
    #1
  2. lx07 Win User

    How do you reset a USB flash drive back to factory settings?


    Usually they are mbr partition table (not gpt), FAT32 and usually not marked active (active means a legacy BIOS based PC will boot it).

    I'd make sure they are mbr not gpt, drop the "quick" so as to write zeros over the disk and not mark them active. Like this:

    diskpart
    list disk
    select disk #
    clean
    convert mbr
    create partition primary
    format fs=fat32 quick
    active
    exit

    It assigns the next free letter to the Windows PC you are running it on. So if you plug in a USB key and it assigns it letter J in File Explorer it will (try to) reserve this letter for that USB so next time you plug it in it gets the same letter. It doesn't write anything to the USB only in HKEY_LOCAL_MACHINE\SYSTEM\MountedDevices on the PC concerned.
     
  3. DirectorC Win User
    Partition a USB Flash Drive

    This is the scary stuff that happens when you use Google:

    'USB flash drives cannot be partitioned in the Windows operating if the drive is identified as removable media. The only way to partition the USB flash drive is to flip the removable bit so that it is recognized as fixed media instead which can be partitioned like any normal hard drive'

    Infoz/Appz:
    You searched for Boot It USB – Lancelhoff.com

    Partition USB Flash Drives - gHacks Tech News

    I got that from searching for 'partition flash drive'.

    I should get paid for this.
     
    DirectorC, Aug 30, 2019
    #3
  4. Remove GPT partition and Reset USB flash drive back to factory setting

    Partition a USB Flash Drive

    I've tried that information and it doesnt work. I've tried this on 4-5 different usb flash drives as well... and, again... Acronis does not work. its been tried a few times
     
    Morrison5891, Aug 30, 2019
    #4
Thema:

Remove GPT partition and Reset USB flash drive back to factory setting

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