On Sunday, 23 August 2020 21:53:50 UTC+1, JGD wrote:
Not sure how well this works with remote drives - presumably depends
what the drive actually is. But if it's eg a USB-connected drive then
you could try:

* Right-click on the offending drive

* Choose Properties

* Choose Tools tab

* Choose Error Checking

This option did the job perfectly and only took about a minute. Everything still there, even in the offending folder :-)

Thank you everyone for your replies.

Keith (Southend)