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help with terminal disk utility setup OSX

This is very confusing so i apologize beforehand. I just bought a mac mini 2006 duel core model. I am trying to put OS10.6 thru a usb drive. I accidentally erased the original operating system. I am unable to use disk utility to partition the drive as it is greyed out. I am trying to use terminal to install from the usb drive. Somehow, when viewing on terminal the current hard drive got partitioned into several parts. When i try to install on the usb drive the setup on the disk ttys to place the software on a partition that doesn't have any space. Im not sure how this partition happened. Now, I would just like to erase the entire drive and not have the partitions so that I can have room to install the software. It seems that the only way to do this is thru Terminal. I am just not sure what the correct commands are. If anyone can help it is much appreciated!

Answered! View the answer I have this problem too

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You can't erase the disk you're booted from. AFAIK No OS will (or, at least, should) let you do that. It's like trying to fix a car engine that's running.

You can only erase your disk when booted from some other volume - either another disk, DVD or similar.

At this point you'll have to have access to another Mac or boot/install volume. Boot from that then erase the HD. That it's a used 06 the reason it was sold might be the HD is thrashed and can't be erased/ single partitioned.

If this answer is acceptable please remember to return and mark it.

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Take a look at his link, https://discussions.apple.com/thread/415...

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David Sesnovich will be eternally grateful.
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