Register FAQ / Rules Forum Spy Search Today's Posts Mark Forums Read
Go Back   MacRumors Forums > Apple Systems and Services > Mac Basics and Help

Reply
 
Thread Tools Search this Thread Display Modes
Old Jul 6, 2008, 07:04 AM   #1
Trueskool
macrumors newbie
 
Join Date: Jun 2008
Format Startup Disk without Installion CD

Hey guys,

I'm currently out of town and don't have access to my Mac OS X installation disc and of course I've run into a bit of rough road recently which has lead to me needing to format my startup disk, zeroing out all data.

I partitioned my 500G Western Digital and made a fully bootable backup of my disk using SuperDuper!. I booted from the drive and it works completely fine "I'm using it now". I proceeded to open disk utility needing to format the internal disk with the zeroing out data security option. I set the format to Mac OS X (Journaled), gave it the same name as before, and clicked erase. It prompted me with an error stating "Cannot erase because the drive could not be unmounted". So I attempted to unmount the drive and it prompted me with another error stating "Could not unmount the drive because it is in use... please close all applications...etc., which didn't work".

After doing a bit of research I've read that to erase your hard drive you need to use your installation disc and follow the instructions, etc, etc.

Now, as previously stated I don't have access to my Leopard disc so that's not an option, at least for another 3 weeks, when I return home.

So my question is: Is it possible to format/erase your startup disk "My internal drive" without the use of your OS installation disc, and if so how would one go about doing it?

Thanks in advance.

Kind Regards,
Rich
Trueskool is offline   0 Reply With Quote
Old Jul 6, 2008, 07:38 AM   #2
MisterEd
macrumors 6502
 
Join Date: Jan 2006
The problem is that you need to be running the formatting program from something other than the hard disk you want to format.

What I'd do: Download gparted and make a bootable disk with it. Start up with the disc in and hold ALT and choose to boot from the CD. Then from within the gparted app you will be able to reformat the disk. Obviously you won't be able to reinstall anything without the leopard disk...

Ed
MisterEd is offline   0 Reply With Quote
Old Jul 6, 2008, 08:14 AM   #3
Trueskool
Thread Starter
macrumors newbie
 
Join Date: Jun 2008
I am running running disk utility from my my external's bootable backup I made. The hard drive i'm trying to format is located inside my computer. Anyways, I believe I got it working.
Trueskool is offline   0 Reply With Quote

Reply
MacRumors Forums > Apple Systems and Services > Mac Basics and Help

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Similar Threads
thread Thread Starter Forum Replies Last Post
Can a mac do a bitwise copy of a USB disk with proprietary disk format? deacLL OS X Mavericks (10.9) 10 Apr 10, 2014 07:14 AM
Format 10.6.8 without installation disk? dreadedsledge MacBook 8 Nov 13, 2013 12:29 PM
Use bootable disk to repair startup disk? tanventure Mac Basics and Help 2 May 15, 2013 09:50 AM
Format Encrypted USB Disk... How to? Gniltsak OS X 1 Nov 5, 2012 08:00 PM
USB not recognized in Startup Manager or Startup Disk PowerPCMacMan PowerPC Macs 3 Oct 23, 2012 05:01 PM

Forum Jump

All times are GMT -5. The time now is 06:33 AM.

Mac Rumors | Mac | iPhone | iPhone Game Reviews | iPhone Apps

Mobile Version | Fixed | Fluid | Fluid HD
Copyright 2002-2013, MacRumors.com, LLC