1. Boot from the external drive and launch Disk Utility.
2. Interact with the table, choose the very first item which is the disk
itself, then stop interacting.
3. Select the partition tab.
4. In the layout pop-up button, choose 1 partition or however many
partitions you require.
5. Click options button and make sure guid is selected. Click ok button.
6. Click apply button. Click partition button.
Hope this helps.
On 26/07/2014 02:10, Michael Marshall wrote:
hey all,
this morning i made myself a bootible installer drive for the mac. now that
this is done i want to know how to entirely wipe my internal Mac hard drive.
i want everything gone including all partitions, basically a factory reset.
i have an external drive that i can boot in to with a Mavericks installer ready
to go.
i have tried going in to recovery and using disk utility to try and erase
everything but to no avail.
i have 1TB of space lost because of this stupid damn partition and i want it
back.
am i able to wipe all partitions and start again using my external installation
media?
thanks for any help
Michael
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