08-23-2008, 08:08 PM #1
creating a new volume undestructively? (with Disk Utility)
- Member Since
- Aug 23, 2008
I have an external 250 GB HDD which has a 120Gb Mac OS Extended Journaled partition, the rest being free space. I'd like to create a second volume out of the free space which exists, using the Disk Utility. What I'd like to know is whether this would erase the data I already have on the existing partition (the first volume) or will leave the existing partition unaffected?
I know in Windows this wouldn't affect the existing partition, but with Disk Utility I'm a little worried, as after I choose the partition type and name for the partition to be created and I click on the "Partition" button, a warning dialogue opens saying:
"Partitioning a disk will destroy all the information on volume of the disk
The disk has 1 volume
Are you sure you wish to partition the disk?"
Thank you in advance,
08-23-2008, 08:14 PM #2
- Member Since
- Jan 23, 2008
- Fort Worth, Texas
- 27" iMac i5, 3.2 GHz, iPad 3, iPhone 5c, iPhone 6+, 3 iPods, El Capitan
As long as you ONLY create and format the partition that's shown as free space you are in no danger of overwriting your OS X partition. Disk Utility more or less does the same thing as the Disk Administrator does in Windows XP.
However, in order to stay one step ahead of Mr. Murphy, make a verified backup of your entire hard drive before proceeding.
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