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Can't format USB mass storage drive [Solved/Closed]

malkosas - Latest answer on Oct 21, 2012 12:13PM
I get a message telling me my USB key needs to be formatted, I click ok, try to format and I get a message saying , disk is write protected, the problem is I've been using that key for over a year with no problem, can anyone help please
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moins plus
For USB drives:

1. Open Start -> Run...
2. type diskmgmt.msc and press enter
3. right click on the partitin you want to format (where the leter and size is)
4. select 'Delete Partition...' and confirm
5. right mose button in the same place and select 'Create partition'
6. select primary partition
6. select size, file forma, disk leter, label etc should be all right if you leave defaults.
7. click ok

This will recreat the partition and format it in proper way. Helped me and will help to most of you if you have problem with MBR.

Good luck

moins plus
I would like to share what worked for me after downloading endless software programs, to try and remove write protection
Try this one out
Just copy and past it into your Browser
You will have a winrar, winzip ect… pop up
Unzip to a folder on your desktop
Unzip the zip file, and with your usb flash drive plugged in, run the program
In my case the end result was format failed, I closed the program removed the usb flash drive and then plugged it back in
then windows asked me if I would like to format this device, the windows format WORKED YES YES YES BABY
The flash drive is as good as new.
I hope this helps someone.

sscharania- Oct 21, 2012 12:13PM
It worked. Blessings to you and your loved ones.
moins plus
Control Panel - Admin Tools - Disk Managment - Wizard will (Init the Disk, Assign Drive Letter, and Format)

stebe- Aug 14, 2008 03:03AM
wow man, I knew it was lack of partition considering I accidently deleted the partition when setting up xp lol. just didnt know how to set up primary partition, it was all unallocated. thanks alot, works great now Oct 19, 2008 10:08AM
thank you alot you was a big help matter a fact you fixed my prob not me :) I spent 3 days trying to fix it and just wow your are very good thanks alot
Ismail- Nov 12, 2008 06:48AM
Dude your Disk Management trick helped me alot.. thank you very much....!!!!!
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Some usb keys or flash drives have a little switch that locks it & makes it read only. Try looking for something like this.

irfan- Feb 18, 2010 01:50AM
worked for me, thanks a lot, now I feel stupid :)
bash- Mar 15, 2010 06:55AM
thank you the information is helpful, God Bless you amen
bigMike- Apr 2, 2010 02:01AM
Get this. I was getting this error on my 4GB MicroSD. I have been using this for a while now, but only started getting this error in the last few days. I was using a MicroSD to SD converter. I read this post and thought, no thats not my problem, I would know if my card has a switch, ive seen it a million times. I read further for an answer that may pertain to me.

I said ok and pulled it out of my pc. I noticed the SD card was not fully inserted, I pushed it back in, and then like a truck it hit me. I had a "LOCK" switch right there on the side, which was in fact in the locked position. Gosh darn it heck I'm an idiot!

BUT this was an excellent response. You stated a simple solution without being rude or cocky (unlike the guy under the name Yo, who offered no help whatsoever on any post) even though the answer turned out to be an obvious oversight.

Now, i'm looking forward to utilizing the lock switch that I never took the time to notice before. Not sure you'll ever come back to read this page since it is not login required, but thanks for the proper postage.
Matt_px3- Apr 14, 2010 03:29AM
This works! just put it in eject it, then give it a format and bobs ur uncal.
Emmanuel- Jun 22, 2010 08:09AM
most usb devices have a small switch besides it so as you turn it to the other side it makes it accessible, if it is not so it makes it a read only and also disk protected
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babba- Apr 2, 2009 09:40PM
excellent worked first time kingston traveler 8gb
Philcan502- Oct 14, 2009 04:44AM
Excellent the HP format utility worked perfectly on my USB Drive.

Thank-you for the tip
DocM108- Oct 28, 2009 08:05PM
Thank You Very Much ......................
You are helping me................
meco72- Feb 21, 2010 03:54AM
Thanks this solved my problem.Finaly I format usb flash drive
Sam- Feb 23, 2010 10:21AM
This tool worked very well, thanks for making it avaliable.
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thanks alot computer management fixed the problem it didnt have it works..

gopi- Jul 22, 2009 02:42AM
my Pen drive is formating fist Windows was unable to complete the format this error is coming
how to this problem completde
moins plus

Keyword search: "AH320 LFormat Utility" and download it.

Maddy- Aug 2, 2008 10:10AM
Dude... Eera... U are a genius... that tool worked perfectly alright for me.... too good man... rock on... keep helping...
Yasir- Feb 5, 2009 04:48AM
Hi!... Eera... U are a genius... that tool worked for me.... u r such a gOOd guy... keep helping... :)
Beda- Oct 20, 2012 07:34AM
Thanks, excellent worked.
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moins plus
Hey Folks: I messed up my 16GB XPORTER drive
installing a linux .img file to boot from USB PEN method

tried bunch of tools mentioned
I even did a low level format and did a FAT format under Linux .
Windows still did not recognize the drive. HP utility kept telling me it was
write protected....

What worked for me was using partition manager 9
I first assigned a DRIVE letter to the USB drive and then did a FAT32 format
after it completed and no errors reported. I then tried the HP tool
again and this time it worked!!! I was so stocked!

good luck

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I just want to say that after a year looking for answers I finally fund it. with the download posted in this site. thanks

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dear sir first of u check u login user account or administrator account or check virus in ur syytem .

moins plus
guys look for HP usb format utility
IT solved my problem.Cheers..

moins plus
Best link for USB format & write protected problem solved.

this link is very helpful for every one

moins plus
hey thanks for the help !!! it seems my sd card had a little yellow swith that turn the write protection off...
you people should search for it on your usb or sd card

moins plus
Hi I thnk this is the solution for it..
on ur usb at the side there is a small tiny button which u can make it "up/down"
just push thats small button to the other side in that usb and try it on ur p.c

moins plus
In pen/flash drive write protect error can remove by some tips given by our friends in answers page.But it wont work some time,
My personal opinion and suggestion is
go to your product official website
say for transcend pen drive go to
and down load formatting software,
click on the downloaded software,
it will release the protection key and formats the your pen drive.

moins plus
Installing software directly onto the USB storage device often results in the installation program re-formatting the USB storage device, most USB storage devices run on a FAT32 format, the installation usually re-formats to the FAT format, this formatting results in loss of storage space, and/or security errors, you must re-format the USB storage device to a FAT32 format to fix the loss of storage and/or security errors, to do so, open 'my computer', right click on the storage device, click 'format...', and re-format to FAT32, if it is already FAT32, try formatting to FAT.

moins plus
Hi Everyone,

the link­
really works for kingston usb mass storage devices..

thnaks for saring the souce..

Mithun malur

vali- May 7, 2010 03:58PM
it not work too cannot find the usb
moins plus
I fixed my the problem it would seem was my drive space was not allocated sd
step by step
considering the drive is conected to pc and running vista

right click my computer manage
then right click the unallocated drive then allocate ok this will then allocate ya drive and format it
this should be enough if you have the same problem I had

xp users use partion magic BE CAREFUL powerfull software can destroy your hdd's if you select wrong one

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