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Ask Max: How do I make two hard drives act as one?

Asked on 02/05/2014:

How do I make two internal hard drives act like one on a PowerMac G4 running OS 10.4.11?


I believe you're referring to what's called a "RAID" volume (Redundant Array of Independent Disks). While most versions of OS X are capable of running a RAID volume, the startup disk cannot be included in the RAID on a PowerMac G4, as it lacks the required hardware (RAID card).

If you're running three internal drives, you can run Disk Utility. Disk Utility has a RAID section. You can select the two non-startup drives and have them placed into an array. However, this does destroy any data currently on those drives.

Read over the Wikipedia article relating to RAID technology. Also note, some methods have risks due to lack of redundancy.

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