I lost my flash drive long story so silly but there you go. I have a backup from a few months ago since then I have changed a drive. When I boot from restored flash drive it says problem with drive 6 which is the drive I replaced. The new drive is in the list of drives but unraid wants to rebuild from parity can I go ahead and not loose data. Help appreciated. 

Be careful at this point. A Rebuild should be fine but Mr Murphy is always present during this operation.   

 

I do believe that the   Tools   >>>   New Config   path is the way to proceed.   However, I have not really used that tool much so I am not really able to help you there.  Here is the section of the Unraid Manual which discusses it:

 

        https://wiki.unraid.net/Manual/Storage_Management#Reset_the_array_configuration

 

If you have more question post back with them 

Thanks for replying I got it fixed by using the latest backup from a few months prior. I did a rebuild on the disk I had replaced some time ago and that took me back to ver 6.8.1 which I then upgraded community apps after changing to a valid gateway as I could not get to the internet then updated to 6.9.1 and setting up My Server to backup flash to the forum cloud so my flash now has a current backup and this will be updated on a regular basis. Thanks everyone for looking and any replies and I hope this helps someone else in the future.