Disabling hard drive auto-sleep

G-Technology G-DRIVE
1

Im on a IMAC with the following external hard drives attached to my USBC ports.

G-DRIVE.
G-Grive with Thunderbolt.

I have unchecked “Put hard drives to sleep when possible”, but they keep going off every fifteen minutes or so. Makes my computer lag for about five seconds whenever I try to access them after this point which I’m an editor so this is not acceptable.

2

The drives shouldn’t be going to sleep by design.

You can try resetting the SMC and NVRAM on your Mac to see if that solves the issue.