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8GB USB Flash Drive became 3GB?

i dont know what to do my 8GB USB became 3GB it all happen when i inserted it to my virused HDD my USB sudden corrupted when i reformat it its shows around 3GB i reformatted it with various types File System yet still 3GB the odd thing is at Disk Management the other half of 3GB was there separately USB i can't do anything about it when right-clicking it i only get "Delete Volume" when i press "Delete Volume" i get nothing help me thanks in advance

13 answers Last reply Best Answer
More about flash drive
  1. What happens when you try to delete L:?
  2. i can't delete L: (right) there's no "Delete" command for L: and L: by the way is the active USB the Left? i dont know thats new there
  3. Have you tried rebooting again to see if it provides the delete option on L:?
    Try running a disk check on it to see if that fixes any corruption.
  4. Best answer
    If that doesn't work, you can use diskpart: Be carefull, because you have to select the correct partitions to delete.
    1


    Open a command prompt on your computer by clicking the "Start" button, clicking on the "Run" button, typing "CMD" (without quotes) into the command prompt, and then pressing the "OK" button. If you run Windows Vista/7, type "CMD" into the Search Bar that appears when you click the "Start" button and then hit the "Enter" key.

    2


    Type "diskpart" (without quotes) and press "Enter." You are now in the DiskPart utility.

    3


    Type "list disk" (without quotes) and press "Enter" to see a list of hard disks that are on the computer. Type "select disk=x" (without quotes). Replace "x" with the number of the disk that you wish to select. Press "Enter."

    4


    Type "list partition" (without quotes) and press "Enter" to see a list of partitions on the selected hard drive. Type "select partition=x" (without quotes) and press "Enter." ("X" is the partition number you wish to select.)

    5


    Type "delete partition" (without quotes) and press "Enter" to delete the partition that is currently selected. Once you have deleted the partition that you want to delete, type "exit" (without quotes) and press "Enter" to exit the DiskPart utility.
  5. i just tried disk check still no error found i scan the USB with 2 types of USB anti virus , Avast,Avira and Karspesky so far no virus found
  6. Best answer selected by dbk47.
  7. danny2000 said:
    If that doesn't work, you can use diskpart: Be carefull, because you have to select the correct partitions to delete.
    1


    Open a command prompt on your computer by clicking the "Start" button, clicking on the "Run" button, typing "CMD" (without quotes) into the command prompt, and then pressing the "OK" button. If you run Windows Vista/7, type "CMD" into the Search Bar that appears when you click the "Start" button and then hit the "Enter" key.

    2


    Type "diskpart" (without quotes) and press "Enter." You are now in the DiskPart utility.

    3


    Type "list disk" (without quotes) and press "Enter" to see a list of hard disks that are on the computer. Type "select disk=x" (without quotes). Replace "x" with the number of the disk that you wish to select. Press "Enter."

    4


    Type "list partition" (without quotes) and press "Enter" to see a list of partitions on the selected hard drive. Type "select partition=x" (without quotes) and press "Enter." ("X" is the partition number you wish to select.)

    5


    Type "delete partition" (without quotes) and press "Enter" to delete the partition that is currently selected. Once you have deleted the partition that you want to delete, type "exit" (without quotes) and press "Enter" to exit the DiskPart utility.


    OMG! your my real HERO! man it works my USS is now back to normal man thanks a lot

    heres the result after i did the instruction you give me

  8. Good, glad to hear it.
  9. danny2000 said:
    Good, glad to hear it.



    Hi,

    I try your method but i received message like this:
    cannot delete a protected partition without the force protected parameter set

    what to do now? please help...
  10. Rajesh Mani said:
    danny2000 said:
    Good, glad to hear it.



    Hi,

    I try your method but i received message like this:
    cannot delete a protected partition without the force protected parameter set

    what to do now? please help...



    Write the same command with "override" after it (without the quotes, of course)
  11. tgyy said:
    Rajesh Mani said:
    danny2000 said:
    Good, glad to hear it.



    Hi,

    I try your method but i received message like this:
    cannot delete a protected partition without the force protected parameter set

    what to do now? please help...



    Write the same command with "override" after it (without the quotes, of course)


    hi Danny ,

    i followed your instruction ,but i am not able to format nor open my USB DOK , please help.
  12. seayer said:
    tgyy said:
    Rajesh Mani said:
    danny2000 said:
    Good, glad to hear it.



    Hi,

    I try your method but i received message like this:
    cannot delete a protected partition without the force protected parameter set

    what to do now? please help...



    Write the same command with "override" after it (without the quotes, of course)


    hi Danny ,

    i followed your instruction ,but i am not able to format nor open my USB DOK , please help.


    I am a newbie, but I found out a way to fix it, i delete all the partitions, then typed create partition primary on the console, pressed enter, then reformatted my usb. Hope it works for you.
  13. I deleted the wrong partition on a 8gb usb hard drive, this is how I solve the issue for me on windows 10:
    1.Start a Command Prompt as an Administrator and type diskpart.
    This starts the Disk Partition tool which you need to use to format the flash drive.
    Once you see the DISKPART command prompt, type in the following commands
    2.DISKPART> list disk /* shows list of active disks */
    3.DISKPART> select disk # /* # is the number for your USB flash drive */
    4.DISKPART> clean /* deletes any existing partitions on the USB flash drive */
    5.DISKPART> create partition primary /* create a primary partition on the USB flash drive */
    6.DISKPART> select partition 1 /* select the newly created partition */
    7.DISKPART> active /* make the new partition active */
    8.DISKPART> format FS=NTFS /* format the USB drive with NTFS file system */
    9.DISKPART> assign /* assign a volume and drive letter to the USB drive */
    10.DISKPART> exit /* exit Disk Partition */
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