@DoctorOhh -
@
z.nina - I don't think you can do much with disk drives from windows, apart from installing drivers, formatting and partitioning.
I think you said you backup to the second drive, are you using some sort of real time on-the-fly backup tool? But your Safe Mode tests suggest this wouldn't be the cause of the problem anyway.
How much on board cache does the second drive have?
How is the drive configured in the BIOS - IDE, AHCI or RAID?
=================
I edit metadata data in the book list cells, in my media library all data is entered manually and I have the columns arranged to facilitate that, the creator (author) and title are the filename. So, every cell I change is committed to the database and gets a fresh opf, when I tab from one cell to the next I get a hesitation (½ sec maybe) but no delay as such.
The one thing I don't have that most people do have is devices, I have a Galaxy Note but its ignored in Calibre.
BR