So how can gain that losses. as far as i know there is no insurance scheme for pen drive. (you can get insurance for your car and car driver) .

So lets jump to track

yes. you can recover your most valuable document, images etc., after accidentally erase from pen drive. there is lot of recovery software..

here i listed one of them.

Recover My Files

Recover My Files is professional data recovery software to recover:

• Deleted Files;
• Lost Files;
• Formatted Disks;
• RAW Disks;
• Missing Drive Letters;
• Windows Re installs or system restores

you can download it freely from here
http://www.recovermyfiles.com/free-data-recovery-download.php
and more details for use to this software
http://www.recovermyfiles.com/recovery-checklist.php