"how do i retrieve the data from a folder in a removable disc which is rendered corrupt or unreadable. more be

Answer 1

You need outside expert help - and there are 100's of firms out there to do it. Just enter "hard disc recovery of data" in your search engine and pick a firm you either like the look of or is near to where you live. However, depending on the amount of corruption you need to be aware that your 'valuable' files could be lost forever. Next time be scrupulous about backing up your data.