It's works on unknown capacity format problem
Requirements: A "corrupt" USB thumb/flash drive, and windows vista/7.
First of all, RESTART YOUR PC...(this is the only way it worked for me...hopefully it works the same for you)
1. Plug-in your USB flash drive to USB port.
2. Open Command Prompt with admin rights. Use any of the below methods to open Command Prompt.
*Type cmd in Start menu*
3. You need to know about the USB drive a little bit. Type in the following commands in the command prompt:
>>> First type DISKPART and hit enter to see the below message. (this opens the disk-partition manager)
>>> Next type LIST DISK command and note down YOUR FLASH DRIVE'S Disk number (eg: Disk 1). BE CAREFUL NOT TO CHOOSE YOUR PRIMARY HARD-DRIVE.
4. Next type all the below commands one by one. Here I assume that your disk drive no is "Disk 1".If you have Disk 2 as your USB flash drive then use Disk 2.Refer the above step to confirm it.
So below are the commands you need to type and execute one by one:
SELECT DISK 1
CLEAN
CREATE PARTITION PRIMARY
SELECT PARTITION 1
ASSIGN
FORMAT FS=NTFS
(Format process may take few minutes)
EXIT
If you did everything exactly, then your USB drive should be goos as new.
tHANKS a lot
Excellent - first post I've found that's helped me (there's a lot that didn't help)
I entered everything you said, but this did not work for me. After I entered FORMAT FS=NTFS it reads: "100% complete. DiskPart has encountered an error: The parameter is incorrect. See System Event Log for more information". Help! What do I do?
Thank you very muchh (worked 100% ) :)
so nice its worked thx a lot
very very thnaks.....................
hey I clean my flash as you said then my pc restarted and now computer cant detect my flash so what now
some body help me---as I said in last comment I have flash memory when i want to format my flash .there is problem with this error unknown capacity .as you explaned here i try to fix it step sy step(cmd and disk part and list disc)and then selected my disk and cleaned my disc suddenly my system had resart after turning on again now my system canot find and detect my flash memory when i plug in my flash no thing happen
method worked, you can use any partition manager not only diskpart.
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Use partition manager, had same proble
Thanks friends its's works but I loose my data
method worked ok. it is repartitioning that can be done with any partition software.
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You are a STAR , thanks
It really work. Kudo 2 u guys, keep it up
click start all programs accessories open windows explorer
you will see your drive usually C: unless its a usb it might be another D: E: F: drive right click select properties you will see
how much used and free space you have
hope this helps
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I entered everything you said, but this did not work for me. After I entered FORMAT FS=NTFS it reads: "100% complete. DiskPart has encountered an error: The parameter is incorrect. See System Event Log for more information". Help! What do I do?
Thx man works!!!
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