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Old Nov 10, 2007, 02:06 AM   #1
JoshFink
macrumors regular
 
Join Date: Aug 2007
Location: Atlanta, GA
Using dd I'm getting a Resource Busy error

Hello, I'm trying to restore an old Hard Drive image OS.dmg to a usb hard drive that I have.

I'm using the command:

dd if=/Users/Shared/OS.dmg of=/dev/disk5 bs=1m

And I'm getting

dd: /dev/disk5: Resource busy

What would cause this error? I'm not sure why it's "busy"

Thanks

Josh

PS.. I get the exact same thing when i try to do it in DiskUtility
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Old Nov 10, 2007, 11:06 PM   #2
mikehardy
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Join Date: Nov 2007
I just did this - what I did may work for you

In order to overwrite all the information on the disk, you have to make sure the mac OS isn't using it first

Open the DiskUtility.app, and on your USB hard drive, unmount any of it's partitions. Do not eject the USB hard drive.

Right click on the hard drive in the DiskUtility and get it's Identifier from the Information tab.

Now take your image, and the identifier, and put it all together with something like this, on the command line in terminal:
dd if=<your image file> of=/dev/<disk identifier>

That worked for me putting the diskboot.img bootable Linux image file onto a USB hard drive that had the identifier disk1 by doing dd if=/Users/mike/diskboot.img of=/dev/disk1

good luck
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Old May 4, 2009, 10:47 AM   #3
Ryan813
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Join Date: Feb 2008
That did the trick thanks
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