There is a manual procedure is available, maybe it helps you to resolve this problem. For the resolving this issue you need to follow below mention instruction
Open MS DOS Shell and Run this following command
Note: First you need to check your pen drive letter name that your computer system shows you after plugging. Here my computer showing me my pen drives letter name e:
Run this cmd >> chkdsk e:/r
It will check the corruption level of disk formation and repair the issues that is finding out
During the repairing process it show you warning message such as “the drive is not a Windows XP drive” that is no issue you can continue repairing procedure by pressing “Y”.
Once it’s done the repairing task, then it will ask you, do you want to save lost chains into files select yes.
Now all repairing process is done now you can see all data in your pen drive
This is very common procedure for resolving this corrupted pen drive problem. In case, through this command you unable to get back your data that means your pen drive is badly corrupted in this situation, I would suggest you try out a professional data recovery application that helps to recover SanDisk pen drive data without any complications. Read this article for getting brief information about this application: http://www.pendrive-datarecovery.com/sandisk/