I was looking for USB devices and got excited for a second then saw the audio. I guess Apple has no time fixing external hdd ejecting when my iMac goes to sleep. When I wake-up my Mac there were like over 10 warnings saying I didn’t eject my hard drive properly. SMH!
The problem is the drive's firmware, not your iMac.
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I hope this fixes the contacts sync issue from iCloud.
What contacts sync issue are you referring to? I use iCloud for contats syncing and I don't have any problems.