Initializing SSD thunderbolt 3
How do I initialize a Thunderbolt 3 SSD for use on a new iMac Pro 24" M1
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Connect the drive.
Launch Disk Utility.
Select the DEVICE by its immutable manufacturer-given device-name.
Choose ERASE.
if you don't see the Device=name, use the tiny View menu to "show all devices"
it refuses to erase, IMMEDIATELY ask again.
Erase and reformat a storage device in Disk Utility on Mac - Apple Support
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