title: How do you INCREASE the size of an APFS volume?
body: <p>I've created an APFS volume on a MBP running High Sierra in order to use it as a Time Machine drive for the iMac I use at work (we don't have a backup solution so this is my hacky way to keep myself safe as the MPB itself is backed up separately). </p>
  
  <p>I foolishly assumed 100GB would be enough (as I only back up certain folders) however in less than a week the iMac has filled it and Time Machine is complaining about insufficient disk space.</p>
  
  <p>I am trying to figure out a way to expand the volume (to say 150GB) however every help page and blog I can find shows you how to <strong>shrink</strong> a <strong>container</strong>.</p>
  
  <p>I've tried using Disk Utility but it doesn't give me the option to resize individual volumes (only the overall container).
  <a href="https://i.stack.imgur.com/6KvVF.png" rel="noreferrer">Disk Utility Screenshot</a></p>
  
  <p>I've also tried using the <code>diskutil</code> in terminal but don't want to break things.</p>
  
  <p>I'd prefer not to dump and re-create the partition of possible, but if it's the only option I will deal with it.</p>
  
  <p>Cheers</p>
  
  <p>Matt</p>