...or CD? I put a music video on a DVD, then could add no more data. Is that due to formatting? I didn't seal the DVD that I knew of. I don't know much about formatting, only that sometimes I get a message that a disc must be formatted before I can use it. What does formatting do?

I am scared of formatting because I don't know how to use it or how to control the disc that has been formatted. I haven't backed up data on my computer for a long time.

Why does a flash drive corrupt files? I put picture folders on my flash drive last week and found 3 copies of the same folders. I could not delete them and got the message they were corrupted. Why did they corrupt?


Formatting clears a flash drive, but what are the results of formatting?