How to unblock my data in external hard disk ?

Hi,

 

I bought a new laptop with Norton antivirus... When the first time I connect my 1 terra external hard disk which was full , the antivirus blocked it completely... There are important files in it... Really important which I don't want to loose... Even if it is infected I want that file... So is there any way to unblock it ??? Details is resolved-no action required , risk - high , status - fully removed , risk category - virus , component - auto protect... And there is no option to unblock or restore.... quarantine is empty. But the files is still in my external... Because its full... Just can't see it... Really need help guys... Help me...