How to take main H drives off line for upgrade

Hello All,
I am in the middle of upgrading and moving internal Hard drives around. I have my internal G5 drives mirrored together but I am adding external hdrives edata on an external box.
Before I physically remove the internal hdrives I think it would be wise to take them offline. All of my data is backed up and I am ready to remove the internal drives.
How do I take the internal RAID drives offline so that I can remove the RAID and begin the physical moving of drives ??
Thanks in advance for any help.
Dick B

Hi Dick Barrett 2-
If it is a startup disk or RAID, you must start from another drive, either optical or external hard. Drag the icons of the drive (s) to the trash and they will be unmounted.
You can also do this via Disk Utility.
If it is not a startup drive, simply dragging the icon to the trash will unmount it.
You can also shut everything down, open up the Mac and disconnect the hard drive before powering back up.
Luck-
-DaddyPaycheck

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