Member Avatar for dongtrien

I have a USB token that uses UDF 2.0 format, I want to format FAT32 or NTFS in win7. How do I format the USB formatted FAT32 ?

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Based on the screenshots posted by and the replies from , the behavior and missing FAT/FAT32/NTFS choices point to Windows seeing the token as a read-only virtual CD (a UDF CD-ROM LUN) rather than a writable USB mass-storage device. That state prevents partition/format tools from offering writable filesystems because there is no writable LUN to format. A quick way to confirm how Windows classifies the device is to check Device Manager for a DVD/CD-ROM entry (or smart-card entry) or to list logical drives and their types; a DriveType value of 5 corresponds to CD-ROM. For example:

wmic logicaldisk get Caption,FileSystem,DriveType

If the device is a virtual-CD security token, the only supported avenue is vendor-provided management software to disable or reconfigure the virtual CD — many vendors intentionally prevent switching to general-purpose storage. That is why utilities like the one suggested by will not work when only a CD LUN is presented. For true removable storage, a normal USB flash drive is the practical solution. If the device instead shows up as a removable disk but still refuses to format, likely causes are firmware write-protect or vendor locking; resolving that typically requires a vendor utility or firmware update. Force-format or low-level wipes risk affecting other drives and generally will not convert a secured token into a writable mass-storage device.

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Member Avatar for hibatahir

AOMEI Partition Assistant Pro Edition 6.5 is the best solution for it i am using it past few years and i give it 5/5 rate you must try it. this convert file system without loosing data.

Member Avatar for dongtrien

I also tried the software you said but did not

Member Avatar for Reverend Jim

You can use the Windows disk management console, diskmgmt.msc. Right click the USB disk and select Format. Pick the file system type on the format dialog.

If that doesn't work you can always use the diskpart.exe utility from the command line, but you gave to be running the shell as Administrator. Be very careful using diskpart as it is easier to destroy your system if you select the wrong disk.

Edited by Reverend Jim
Member Avatar for dongtrien

The case you presented I tried all but not, when the format does not have other formats FAT, FAT32, NTFS ... you see my picture

Member Avatar for Reverend Jim

Some USB sticks have two partitions, one of which contains non-modifiable code (effectively a CD). I never use this feature and usually just use disk manager to remove the drive letter so that it doesn't appear in Explorer. I have had some older sticks that I was unable to format without using diskpart's clean command to wipe. Again, I must caution that you be extremely careful when using this. If you clean the wrong disk/partition there is no going back. You can avoid mistakes by doing a list disk in diskpart and doing a select disk on the disk with the correct size.

Member Avatar for hibatahir

its not possible can you share the screen shots of error msg.

Member Avatar for Reverend Jim

Looking at your image, I have to ask - you said you wanted to format a USB token. Based on that image, you haven't inserted one. Where is the USB drive you want to format?

Member Avatar for dongtrien

I will send the pictures when I format the error, see the image file attached







Member Avatar for Reverend Jim

Why are you linking to another site when you can just upload the images here?

From the little I can find out it looks like that is not a USB storage device but some sort of security token. If you want USB storage then buy a storage device.

Edited by Reverend Jim
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