generic USB problem

20 pts.
Tags:
USB
Windows errors
Have a generic 4gb Usb that I use to store some programs and files from my hard drive to free up space.Had no problems until the other day whem trying to copy some work to it.If I try to open a file I get the error message "the file or directory is corrupted or unreadable".Some files will open and allow me to copy to hard drive but when I try to delete from usb get error message "Cannot find the specifiedfile.make sure you specify the correct path or file name." or "cannot read XYZ:data error(cyclic redundancy check) Also tried to format usb unable to do so, won't let me defrag either.I understand I have a file/s that are incomplete or corrupted on usb and if need be will throw away but I am now on a quest to hopefully sort this out .Also what steps to I take in future so this doesn't happen again, I have several usbs for study,photos and other files and have not encounted this problem before, I am more than patient to shift through each file and take what ever steps or if I must, put it in the rubbish bin.Cheers Felicity
ASKED: July 18, 2008  3:40 AM
UPDATED: July 18, 2008  1:37 PM

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1. Plug in the USB Drive, go to my computer, right click on this drive icon, select “sharing and security” or “properties”, select “tools” tab, click on “error checking” and see what happens, it should work.
2. The files might have got corrupt on this media may be due to it is very old, has been used very extensively, has been formatted many times, bad sectors, phyical damage to the media.
3. If it is physical damage a hardware vendor can fix it (less possibility), retrieve your data on another media (high possibility)
4. Physical damage could have happened if it has been exposed to heat, or kept near some other device having strong electro-magnetic field.

Above all if nothing happens, you can sacrifice the device, but for data, you can go for point number 3.

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