files external HDD

I moved content to an external HDD. After the mac sleeps, CB cannot find the files (projects & content). What am I doing wrong?
imac pro 8 core several usb 3 HDD


How did you move the content? Have you used the Steinberg Library Manager application to do so?

no I am sadly ignorant of Library Manager…


Then this is probably wrong…

Cubase doesn’t know that you moved something. The path to the libraries just doesn’t exist anymore.