Mystery internal HD partition

Hey all,

As a novice Mac user I recently purchased a 15" MBP with 100 GB hard drive. I wanted to trial bootcamp, but when I consulted Disk Utility it shows that I have two existing partitions.

The first is Macintosh HD (Mac OS Ext Journaled, 72.7 GB).

The second 'mystery' partition is disk0s3 (Apple_KFS 20 GB).

It is not mounted, doesn't seem to respond to any actions (won't mount) and I don't know what it is for. The only thing that I can think of is that it is an Apple swap file, but 20GB seems very large on a 100 GB HD.

Can anyone help me with whether this is a default on new MBP hard disks, what it might be and whether it can be reformatted as a winXP partition with Bootcamp.

Thanks in advance.

Mac Book Pro Mac OS X (10.4.6) 15" 2.16 GHz - 100 GB @ 5400 RPM

Posted on Jul 3, 2006 7:06 AM

Reply
Question marked as ⚠️ Top-ranking reply

Posted on Jul 3, 2006 7:42 AM

My MacBook has but one partition, taking up 92.84 Gigs on a 100 Gig drive. Not sure what this second partition is. You could probably safely eliminate it, just select the partition scheme required by Bootcamp and go.
1 reply
Sort By: 
Question marked as ⚠️ Top-ranking reply

Jul 3, 2006 7:42 AM in response to Hoarse

My MacBook has but one partition, taking up 92.84 Gigs on a 100 Gig drive. Not sure what this second partition is. You could probably safely eliminate it, just select the partition scheme required by Bootcamp and go.
Reply

This thread has been closed by the system or the community team. You may vote for any posts you find helpful, or search the Community for additional answers.

Mystery internal HD partition

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.