Unmounting an INTERNAL hardrive

[Stykkisholmur]

I've looked around for ways to unmount an internal HD. I am aware you have to unmount it by inserting the OS X install disk 1, going to DU and selecting unmount. What do I do after this? I've restarted it right after doing this, but it would never start up again unmounted on the machine. Is there something I'm missing?

I'm asking because I need to unmount it to run iDefrag. I have a copy of it running on my external HD and on a disk. I am hoping someone has the answer.


Regards,

Nick

 

[ElDiabloConCaca]

You can unmount any disk that the computer is currently not booted from. Simply drag the disk to the trash in the dock, and the disk will eject.

You cannot, under any circumstances, unmount the disk you are currently booted from. It is flat-out impossible (well, not 100% impossible, but very dangerous).

If you wish to run iDefrag on your Mac OS X boot drive, then you will need to boot from an alternate source -- say, a copy of Mac OS X installed on an external drive. Install Mac OS X on an external drive, boot from that drive, install iDefrag on that drive, then run iDefrag on your internal Mac OS X drive.