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Windows 7: Cannot format usb flash drive

12 Feb 2010   #11
Brink
Microsoft MVP

64-bit Windows 10 build 10074
 
 

You're most welcome Cimage. Please let us know how it went for you.


My System SpecsSystem Spec
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24 May 2010   #12
xarden

Windows 7 Enterprise
 
 

Quote   Quote: Originally Posted by theog View Post
Disk - Clean and Clean All with Diskpart Command

Open command prompt.

Type in command line

DISKPART
LIST DISK
SELECT DISK # (USB Stick)
CLEAN ALL
CREATE PARTITION PRIMARY
SELECT PARTITION 1
ACTIVE
FORMAT=FAT
ASSIGN
EXIT
EXIT
Should be: FORMAT FS=FAT
or FS=FAT32 if you're that way inclined.
My System SpecsSystem Spec
02 Jun 2010   #13
adi19956

Windows 7
 
 

hey, I tried what you said and received this error then in the event log for my details I found this CONFUSED


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My System SpecsSystem Spec
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02 Jun 2010   #14
Brink
Microsoft MVP

64-bit Windows 10 build 10074
 
 

Hello Adi, and welcome to Seven Forums.

It looks like you have a bad block/sector on the hard drive. You might see if running check disk on the drive may help it and allow you to clean it afterwards.

Hope this helps,
Shawn
My System SpecsSystem Spec
03 Jun 2010   #15
adi19956

Windows 7
 
 

hey Shawn, thanks for the reply :-)
I tried that and apparently there are no problems... I've done it on two computers, one bought with Windows 7, one upgraded to it from Vista. Neither works. I've tried a USB stick and 3 micro SD cards with a USB converter, nothing works :'(
could it be a problem with 7??? It's just I swear it all worked with previous versions of Windows.
My System SpecsSystem Spec
03 Jun 2010   #16
Brink
Microsoft MVP

64-bit Windows 10 build 10074
 
 

Adi,

I must admit that I'm not sure what may be wrong with it. Are you able to format it normally? Do you have any write protection enabled on the USB? Give it a try on another computer. If it still will not work, then the USB flash key may be bad.
My System SpecsSystem Spec
04 Jun 2010   #17
adi19956

Windows 7
 
 

tried 3 computers, all running 7, no access to anything but 7 at the moment. In total have tried 11 USB sockets split between the various computers. I would try and find out if it have write protection... but the computers won't let me access it :O arh well
My System SpecsSystem Spec
29 Oct 2010   #18
amjo92

Windows 7
 
 
HELP!!

Quote   Quote: Originally Posted by theog View Post
Disk - Clean and Clean All with Diskpart Command

Open command prompt.

Type in command line

DISKPART
LIST DISK
SELECT DISK # (USB Stick)
CLEAN ALL
CREATE PARTITION PRIMARY
SELECT PARTITION 1
ACTIVE
FORMAT FS=FAT32
ASSIGN
EXIT
EXIT

I don't know if i'm too late to this thread but I have a problem with my USB.
I need to format it but I keep getting an error saying windows cannot preform this task. I tried your method but when i get to "format fs=fat" it says 0% complete.
It then says that the parameter is incorrect.
I don't know what to do can anyone help?


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My System SpecsSystem Spec
29 Oct 2010   #19
Brink
Microsoft MVP

64-bit Windows 10 build 10074
 
 

Hello Amjo, and welcome to Seven Forums.

It was just a mistake in that post. It should have been the command below instead.

format fs=fat32

Partition or Volume - Create New

Hope this helps,
Shawn
My System SpecsSystem Spec
29 Oct 2010   #20
karlsnooks

MS Windows 7 Ultimate SP1 64-bit
 
 

amjo,
You can also format fs=ntfs

Depending on my intended use of the usb, i either format as fat 32 or ntfs and the vast majority of the time I use ntfs.

My Win7 DVD is on a ntfs formatted stick. My Win 7PE likewise and my Win 7 Repair Disc is also ntfs.
My System SpecsSystem Spec
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 Cannot format usb flash drive




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