Formatting external HD for Monterey
I need to format an external hard disk for backup / Time Machine purposes.
I understand that starting with Big Sur, Mac OS Extended (Journaled) is no longer the default when using Time Machine and that I should opt for APFS.
I also have read that an external HD formatted in APFS will not mount on a pre Big Sur system.
I have a couple of old Macs limited to High Sierra. Thinking of keeping my options open in that
maybe some time in the future I’ll want to connect the HD to the older Macs, I should format the HD
in Mac OS Extended (Journaled).
Basically, is there any harm in formatting the external HD in Mac OS Extended (Journaled) for Monterey 12.2.1.?
Many thanks.
MacBook Pro 16″, macOS 12.2