RolandJS :
This may not be a problem of EaseUS, rather, a worsening problem that launched this operation in the first place. What was going on before you launched EaseUS?
I got the "need to format disk" error when I tried to save files to it. Later, Acrobat wouldn't open, and my fax program was wonky...among other things! A system restore to before the last Windows update has solved the C drive issues, but the external drive is a mess.
Right now I'm running a chkdsk to restore files, but there wasn't enough space to save them. Windows is checking something to release the found data to free space...how can there be enough space for that? And it's taking forever. Not hopeful.
Is it trying to save to my C drive? Because the messed-up drive has lots of free space!
I may have to take it to the shop...
Thanks for your help.