Write-protection on 16GB cruzer blade

I have error in format my 16GB cruzer flash drive with write protection. Please help me to solve it,
I have windows 7 pc and windows xp pc too…

Thank you,

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Iposted this in another section but I will repost here.

I have had this happen as well on several occassions the best way to fix it (if you are on vista/7/8) is to use diskpart, it is built in to all 3 of the windows OS that I listed.

  1. open a command prompt with admin rights

  2. type in “diskpart” and hit the enter key (no quote marks of course) it will open a new window.

  3. type in “list disk” (no quote marks)

  4. I dentify the number of the disk that matches your flash drive, on the example below mine would be disk 7

DISKPART> list disk

Disk ### Status Size Free Dyn Gpt

Disk 0 Online 465 GB 1024 KB
Disk 1 Online 931 GB 0 B
Disk 2 Online 298 GB 0 B
Disk 3 No Media 0 B 0 B
Disk 4 No Media 0 B 0 B
Disk 5 No Media 0 B 0 B
Disk 6 No Media 0 B 0 B
Disk 7 Online 14 GB 0 B

  1. type in “select disk N” (again no quotes with N being the number of your drive). be very very careful here as disk part is a powerful command line tool and assumes you know what your doing and will easily wipe out a drive you don’t want it to if you select the wrong disk number. Example:

DISKPART> select disk 7

Disk 7 is now the selected disk.

  1. once you confirm it has selected the right disk number; (example above, second line), type in " Clean" (no quotes), this will completly remove all partition information and set the disk up to be reformatted

  2. at this point you can either create volumes/partitions and format it with diskpart or close diskpart and use your format tool of choice.

I tried with DISKPART as you said and it  does not work at all (it had an I/O issue does not specified)…