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Windows 7: USB flash drive not recognized

10 Mar 2012   #11

Windows 7 Home Premium 32 bit

According to their website, either the format will go through without any error (in which case it is assumed that the pendrive has been given life) or will display an error message as below.

USB flash drive not recognized-10-03-2012-22-33-05.jpg

From what you say the format did go through and still you are not able to write or Read. Am I right?

Let me ask what happened when you tried to write after formatting with that utility?

Did it give any write protected error message then?

Did you check how the pendrive appeared in the Disk Management? Was it recognised and did it get a drive letter? Did it show that it is formatted?

At your leisure, repeat the exercise and let us know. Atleast I am curious to know what exactly the utility did or didn't do.( I have seen many success stories with that utility.)

(That said, if your pendrive is still under warranty, get it replaced. Contact your vendor. May be he will replace it immediately.)

My System SpecsSystem Spec
10 Mar 2012   #12

Microsoft Windows 7 Ultimate 64-bit Service Pack 1

sorry i was not accurent,recovery tool says:format failed error 0x1405.afa dskmgmnt,it shows up with its letter,lets me assign a new letter but nothing more.repeated the exercise with no results.
My System SpecsSystem Spec
10 Mar 2012   #13

Windows 7 32 bit

Did you try the diskpart procedure step by step? That has a much higher chance of success than using disk management applet.

Also these key drives aren't the most solid. The first one I bought was Sandisk titanium because the review made a big deal about the solid construction. Well it's a "sliding guts" design and I lost all my data after only using it maybe a dozen times. I'll never buy "sliding guts" design key drive again. No moving parts. Even so plugging and unplugging it's not that tough to put stress on the thing. If the data is not critical it may be more hassle than it's worth. If you paid less than $50 it might be a chuck and forget solution.
My System SpecsSystem Spec

10 Mar 2012   #14

Microsoft Windows 7 Ultimate 64-bit Service Pack 1

believe me,step by step.if nothing new comes up,i will consider the stick as damaged and open it s guts for some...interial examination,cant profit from your losses,greek sayin.
My System SpecsSystem Spec
10 Mar 2012   #15

Windows 7 Home Premium 32 bit

Yep, if the Online Recovery tool said format failed, then I would take that your pendrive is beyond redemption.

As suggested by me earlier try to get a replacement. I think Transcend drives carry a lifetime warranty or a long warranty replacement.
My System SpecsSystem Spec
11 Mar 2012   #16

Microsoft Windows 7 Ultimate 64-bit Service Pack 1

thank you everybody for trying,it was worth the try and i learned a lot from the command sheme.I ll open it up and use its housing for some mods,nice that somebody out there listens or reads...
My System SpecsSystem Spec
09 Oct 2013   #17

Windows Home Premium 32bit

Quote   Quote: Originally Posted by MilesAhead View Post
afa the formatting you can do it from command prompt using DiskPart.
1. Go in Start > write “cmd” > right-click the Windows Command Prompt and choose to run it as an Administrator.
2. At the prompt, enter “DISKPART” to launch Microsoft’s disk management utility. It will take a second until it loads and when ready it will read “DISKPART>”.
3. Type in “list disk” to show a list of all disk drives. If your USB key is plugged into your PC, it should be listed here, along with other drives. Note the USB key’s disk number – you can pick it out by looking at the disk capacity.
4. Type “select disk n" (whatever is your USB disk number in place of "n").
5. Type “clean” for the utility to clean the disk, which DiskPart will confirm.
6. Create a new partition by entering “create partition primary”.
7. Choose this partition with “select partition 1", and then mark it as active by typing “active”.
8. Format the key by inputting “format fs=fat32". This should take a few minutes, and DiskPart will display a progress percentage.
9. Lastly, type “assign” to give this USB key a drive letter and “exit” to exit DiskPart.
I used the above instructions to rescue a fairly new 8GB fast USB stick that had been in use on a Linux system that had for some reason become corrupted in that when plugged into my Win7 PC it did not appear in Explorer at all and was shown as "Drive 7" in Disk Management with 3 RAW partitions, refused to be formatted and refused to accept a Drive letter.
After formatting as described, the junked stick was restored to as-new condition.
Thanks, MilesAhead!
My System SpecsSystem Spec

 USB flash drive not recognized

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