SanDisk G-Drive ArmorATD with macOS Monterey

I recently purchased a new 24” iMac (in purple, with 16GB of RAM) and wanted to replace my ancient Time Machine drive with something newer that supported USB-C. While I was ordering a few other items from Best Buy, I noticed they had a 4TB SanDisk G-Drive ArmorATD for a reasonable price, so I bought one to use for Time Machine backups.

The drive arrived today and when I plugged it into the iMac, the only thing it did was flash its light at me repeatedly. It wouldn’t mount, and I couldn’t format it in Disk Utility.

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