[Joseph The Grave]

Originally Posted by DNSB

Where is the J: drive located? Is it a local drive, on a NAS or a cloud connection (OneDrive, GoogleDrive, etc.). If it is not a local drive, see I am getting errors with my calibre library on a networked drive/NAS? in the calibre FAQs.

It's a local drive, an old 2.5 TB external USB hard drive to be precise. My entire Calibre library (55GB+) is on that drive, but backed up regularly to 2 other drives, one an internal spinner.