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Windows 7: My 4gb USB pendrive appears as only 250gb!

17 May 2010   #1

Windows 7 & Linux
My 4gb USB pendrive appears as only 250gb!

My 4gb USB pendrive appears as only 250mb (EDITED NOW )! What can I do? I have tried using the format option on right click...

My System SpecsSystem Spec
17 May 2010   #2

Windows 7 x64 Ultimate

Heh, your complainaing about 246 free gig?

Ok I know you mean meg...

Well I would look in the disk manager in the control panel and see what the partitioning on it is. it may be partitioned wrong. You can delete and repartition it to the full 4 gig. then reformat it again.
My System SpecsSystem Spec
17 May 2010   #3
Microsoft MVP

Win 7 Ultimate x64

Almost sounds like you set Windows to use it as a ReadyBoost device. If that is what happened do the reverse of this,

ReadyBoost - Setup and Use

to disable it.
My System SpecsSystem Spec

17 May 2010   #4

Windows 7 x64 pro/ Windows 7 x86 Pro/ XP SP3 x86

In case, none of the suggestions work, back up the data on the pen drive, then format using the HP USB disk Storage Format Tool.
My System SpecsSystem Spec
17 May 2010   #5

Win7 Home Premium 64x

Some questions:
Do you mean 256mb? (I am assuming you are)(1000mb=1gb)
Is this a new flash drive?
where did you get the drive?
Was it working previously with a different OS?
My System SpecsSystem Spec
17 May 2010   #6

Windows 7 & Linux

I think that the partitioning thingy sounds like a good explanation. How to a repartition the pendrive?

And it is not set for ready boot, the HP format thing does not work at all, and no it is not a new flash drive, I does not even mount in Linux.
My System SpecsSystem Spec
17 May 2010   #7

Windows 7 & Linux

You may want to look at this picture from my Disk Management tool:

I can't delete the 250mb partition, nor can I create a new partition from the unallocated space.
My System SpecsSystem Spec

 My 4gb USB pendrive appears as only 250gb!

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