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So, I have a 8GB USB thumbrive I am trying to format so I can use all 8 (or 7.27 to be exact) GB in a single partition. The drive already has a 943 MB partition, which I figured I could extend to use the full 7.27 GB but this does not seem to be the case

New Volume Right Click

As you can see, the Extend volume option is greyed out.

Also notice the Delete volume is greyed out..

If I right click on the 6.35 GB volume, which is currently unallocated I get the following unallocated volume

All of the options are greyed out on the Unallocated volume!

What tool can I use to remove the existing partition and create a new partition that uses the entire 7.27 GB in a single volume?

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2 Answers 2

up vote 2 down vote accepted

Windows will not let you partition removeable storage devices. You must delete all of the partitions and make a new, full size one outside of Windows. I recommend the GParted Live CD.

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that worked. Thanks! –  Richie086 Mar 15 '13 at 20:02
That's not entirely true; it will not let you create more than a single partition on removable storage devices. And the the 'Disk Management' GUI will not let you delete partitions from removable storage to "prevent inadvertent data loss". –  alldayremix Mar 18 '13 at 19:22

Have you tried using diskpart?

Specifically, in a cmd.exe window, running the following commands will erase and reformat your USB drive:

> diskpart.exe
    list disk                 'This will list your disk drives, 
                              ' note the number of your USB drive
    select disk #             'Replace # here with the number from above
    clean                     'This removes all partitions
    create partition primary
    select partition 1
    format fs=NTFS QUICK
    assign                    'This assigns it a drive letter
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This should be the accepted answer. –  Alex Popov Jul 30 at 9:24

protected by DragonLord Jul 22 at 4:41

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