• Skip to main content
  • Skip to primary sidebar
  • Skip to footer
  • Home
  • About
    • Stephen Foskett
      • My Publications
        • Urban Forms in Suburbia: The Rise of the Edge City
      • Storage Magazine Columns
      • Whitepapers
      • Multimedia
      • Speaking Engagements
    • Services
    • Disclosures
  • Categories
    • Apple
    • Ask a Pack Rat
    • Computer History
    • Deals
    • Enterprise storage
    • Events
    • Personal
    • Photography
    • Terabyte home
    • Virtual Storage
  • Guides
    • The iPhone Exchange ActiveSync Guide
      • The iPhone Exchange ActiveSync Troubleshooting Guide
    • The iPad Exchange ActiveSync Guide
      • iPad Exchange ActiveSync Troubleshooting Guide
    • Toolbox
      • Power Over Ethernet Calculator
      • EMC Symmetrix WWN Calculator
      • EMC Symmetrix TimeFinder DOS Batch File
    • Linux Logical Volume Manager Walkthrough
  • Calendar

Stephen Foskett, Pack Rat

Understanding the accumulation of data

You are here: Home / Everything / Apple / How To Add a New CoreStorage Volume

How To Add a New CoreStorage Volume

October 3, 2012 By Stephen 6 Comments

After I moved my iMac move volume to an SSD, I was left with an internal hard disk drive full of data. Rather than blowing away and start again, I decided to repartition it using CoreStorage. After resizing the existing volume, I decided to create a new drive to store Final Cut Pro data. The CoreStorage createVolume command made short work of this task!

Preliminary Steps

Before you can create a new CoreStorage volume, you must convert the disk to CoreStorage and free up some space by either resizing the existing volumes or deleting them. You should also consider rebooting the Mac to make sure the CoreStorage volume is up and running correctly.

Get the UUID of the Logical Volume Group

We must supply diskutil with two critical pieces of information: The Logical Volume Group UUID and the desired size of our new Logical Volume.

We need the UUID and available capacity of the Logical Volume Group

It is important to get the correct UUID: Each element in the CoreStorage stack (Logical Volume Group, Physical Volume, Logical Volume Family, and Logical Volume) has its own UUID and we must use the correct one for each command!

Create a New Logical Volume

I decided to create a new Logical Volume in the Logical Volume Group on my “Macintosh HD” using all the available space. I named this new LV “New LV” and stuck with the journaled HFS+ volume type (jhfs+). I copied and pasted the exact number of bytes from the “diskinfo corestorage list” command above.

diskutil coreStorage createVolume E8A912ED-6B22-471E-96A9-65851A48121F jhfs+ "New LV" 149026357248b
The CoreStorage createVolume command does it all!

In just a few minutes, diskutil created a new CoreStorage Logical Volume (including a new Logical Volume Family to contain it), formatted it as journaled HFS+, and mounted it for me to use!

Here’s my post-create “cs list”

You might also want to read these other posts...

  • Liberate Wi-Fi Smart Bulbs and Switches with Tasmota!
  • Electric Car Over the Internet: My Experience Buying From…
  • How To Connect Everything From Everywhere with ZeroTier
  • How To Install ZeroTier on TrueNAS 12
  • Introducing Rabbit: I Bought a Cloud!

Filed Under: Apple, Terabyte home Tagged With: add, CoreStorage, logical volume manager, Mac OS X

Primary Sidebar

James T. Kirk: Mr. Scott. Have you always multiplied your repair estimates by a factor of four?
Montgomery Scott: Certainly, sir. How else can I keep my reputation as a miracle worker?

Subscribe via Email

Subscribe via email and you will receive my latest blog posts in your inbox. No ads or spam, just the same great content you find on my site!
 New posts (daily)
 Where's Stephen? (weekly)

Download My Book


Download my free e-book:
Essential Enterprise Storage Concepts!

Recent Posts

How To Install ZeroTier on TrueNAS 12

February 3, 2022

Scam Alert: Fake DMCA Takedown for Link Insertion

January 24, 2022

How To Connect Everything From Everywhere with ZeroTier

January 14, 2022

Electric Car Over the Internet: My Experience Buying From Vroom

November 28, 2020

Powering Rabbits: The Mean Well LRS-350-12 Power Supply

October 18, 2020

Tortoise or Hare? Nvidia Jetson TK1

September 22, 2020

Running Rabbits: More About My Cloud NUCs

September 21, 2020

Introducing Rabbit: I Bought a Cloud!

September 10, 2020

Remove ROM To Use LSI SAS Cards in HPE Servers

August 23, 2020

Test Your Wi-Fi with iPerf for iOS

July 9, 2020

Symbolic Links

    Featured Posts

    Storage Changes in VMware vSphere 5.1

    September 4, 2012

    Download My Free E-Book, “Essential Enterprise Storage Concepts”!

    April 4, 2017

    Review: 2013 Ford Flex

    September 23, 2012

    My Visit to Bletchley Park

    August 3, 2012

    Nimble Storage Rolls Out an All-Flash Array

    February 24, 2016

    How To Connect Everything From Everywhere with ZeroTier

    January 14, 2022

    A Watch Guy’s Review of the Apple Watch

    April 27, 2015

    What More Could Alan Turing Have Accomplished?

    October 7, 2012

    Preserving Your Credibility Is Your Prime Directive

    June 4, 2012

    Why I Am Biased Against FCoE

    October 21, 2011

    Footer

    Legalese

    Copyright © 2022 · Log in