Time Machine issue with mixed Catalina(10.15) and Mojave(10.14) macOS systems
I've been using the network Time Machine (TM) backups for a while with a few laptops running Mojave (10.14). Recently, I added the TM drive to a new Catalina (10.15) system and it seems to have broken backups for all systems. Upon connecting the drive to a system directly, it reports filesystem corruption that cannot be repaired. I've had to reformat the drive to make it work again, but it breaks again once I add the new system. I'm wondering if anyone else has encountered this and if there's a possible solution. I'm hesitant to upgrade the other systems in case it's an issue with Catalina compatibility and the current firmware/OS (C4000 looks like custom openwrt).