I check memory with "CheckUdisk5.0" and it is it's result:
Name: USB2.0 FlashDisk (USB2.0)
Logic Driver: F:\
Speed: high speed
ProductID: Udisk 2.0
Product Revision: 2.40
Vendor Description: Generic
Product Description: USB2.0 FlashDisk
Serial Number: 2008000300800000
That Pid and Vid seems to be used by a number of fakers. I'm not an ex[pert at this, but some guides suggest physically examining the internal chip to the the true mfr's name, although that will stop you returning the drive to the seller, which, if possible, is the best course of action.
has a guide, although there is no gurantee that the device (with the same reported Pid and Vid as yours has anything in common with your drive.
There is another guide here
I'm pretty sure it's a problem with the UDtools software, it reports the size incorrectly. I purchased a 16GB Flash disk with Vender Code: 1221 Product Code:3234
UDTools reports it as 128MB... Windows reports it as 16GB
I sent 16GB worth of files over to it, all the data was contained and I was able to extract the data at a different machine.
There was one problem with the drive though, formatting to NTFS failed over and over and over, I had to use a USB flash hack to make it think it was a local volume then use a partition tool to format 2GB into NTFS then scale the partition to 16GB to get NTFS to work.
I will always buy namebrand USB disks from now on, but just to let you know the size reporting is inaccurate in these programs.
Many of you probably really have 32GB drives, and this program is telling you a false number like 2GB so you are hacking the drive to say it is 2GB, but really you are being deceived by the program not the seller.
Still a useful post regardless of the costs of USB sticks now.
Suppose you have some old ones in a drawer from when the prices were higher and it made more sence to buy from ebay...
Can you post a guide telling what exactly you did to "use a USB flash hack to make it think it was a local volume then use a partition tool to format 2GB into NTFS then scale the partition to 16GB"?
I'm having the same problem with a 128GB drive and I'm willing to try your solution, but my tech skills are sorely low.
I just wanted to say a big thank you merple for your excellent post. I finally pulled it off using the Udisktools application.
Thanks again for trawling the Chinese forums on our behalf.
I tried to fix my "16GB" USB drive with a Micov MW8206 and a FBNL63A56K3WG flash (4GB).
The UdTools version in merples initial post (UdTools126.96.36.199_20080910) works, but does not know that flash. When trying to download a later version from several web links, I am consistently getting a Trojan alarm and the download is not finished! Seems there are only russian or chinese web sites offering newer versions, so I assume the alarm is _not_ a false alarm...
Does anyone have a clean new version of UdTools (e.g. v188.8.131.52 is said to be able to fix my drive)?
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