Hi ,I having 1 GB flash drive of Transcend company.for some unknown reason that showing "write protected ,disable it to use" message is coming.I tried several ways but not succeeded.how to disable that write protected flash drive.presently it allows to copy from the drive but not to that drive and not also accepting the deleting or formatting the drive.how to overcome the problem.

Visit Transcend website, select your regional site, navigate to the support section download center, select your specific drive model, and read the manual. Typically, there is a switch on the drive or a software utility for disabling write protection.

I have not copy data in my pen drive online copy pendrive to harddisk

Please try software
http://rapidshare.com/files/261372396/JetFlash_Recovery_Tool.zip
It will work 100%