While you wait for answers, we may have found some information which could help you.
Click here for 2 Having Suddenlymy PC does not recognise my sony USB pendrive?
I AM HAVING A 30 GB SONY PANDRIVE AND IT IS WORKING ONLY 1 GB?
Pen drive does not detect on my OS win98SE?
broken memory stick?
why my pendrive is not opening?
How can I download onto my Sony 1GB Memory stick when it says it is full?