How to fix LaCie 2big Dock not showing in MacBook's Disk Utility?

I have just bought a LaCie 2big DOCK for my MacBook Pro - does not show up in Disk Utility - should I use exFAT or APFS ?


[Re-Titled by Moderator]

Original Title: Mounting LaCie 2big DOCK

MacBook Pro 14″, macOS 26.0

Posted on Oct 14, 2025 8:20 AM

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Posted on Oct 14, 2025 8:33 AM

The 2 Big Dock is a raided external drive. It manages its own internal format since it's raided. You should not be messing with it beyond that as you can break the raid.


Also, if you don't see it in Disk Utility how exactly are you going to format it?


You may need to the LaCie Raid Manager to manage the drive.

https://www.seagate.com/support/software/lacie-raid-manager/




2 replies
Question marked as Top-ranking reply

Oct 14, 2025 8:33 AM in response to Jim Page

The 2 Big Dock is a raided external drive. It manages its own internal format since it's raided. You should not be messing with it beyond that as you can break the raid.


Also, if you don't see it in Disk Utility how exactly are you going to format it?


You may need to the LaCie Raid Manager to manage the drive.

https://www.seagate.com/support/software/lacie-raid-manager/




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How to fix LaCie 2big Dock not showing in MacBook's Disk Utility?

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