Hi, Check out this Apple Support article for assistance:
https://support.apple.com/en-ca/HT208891 Basically, you're not splitting the external SSD in two restricted partitions like in previous drive formats, but you are creating a second APFS volume which is dynamically using space as required. Yes, this is totally doable and accessible in Disk Utility. Later... Tim Kilburn Jamf Certified Tech Apple Teacher (with Swift Playgrounds Recognition) Fort McMurray, AB Canada On Feb 11, 2020, at 10:55, Paul Hopewell <hopew...@hopewell.org.uk> wrote: Hello, I am running the latest Catalina. I have a 512 GB external SSD. I would like to split this into 2 volumes so that I could create bootable backups for each of my iMac and MacBook using SuperDuper. In both cases the internal SSD is less than 150 GB. I am advised that I need 2 Volumes each set up as AFS, not 2 partitions. Can I do this using disk utility? I have a look at disk utility and it is not obvious how to do this. Many thanks … Paul Hopewell P.S. I used to create bootable backups to a 256 GB USB memory stick. This was unreliable and took several hours. As a test I created a bootable backup on the 512 GB external SSD set up as a single volume and it took only 17 minutes! -- The following information is important for all members of the Mac Visionaries list. If you have any questions or concerns about the running of this list, or if you feel that a member's post is inappropriate, please contact the owners or moderators directly rather than posting on the list itself. Your Mac Visionaries list moderator is Mark Taylor. You can reach mark at: mk...@ucla.edu and your owner is Cara Quinn - you can reach Cara at caraqu...@caraquinn.com The archives for this list can be searched at: http://www.mail-archive.com/macvisionaries@googlegroups.com/ --- You received this message because you are subscribed to the Google Groups "MacVisionaries" group. To unsubscribe from this group and stop receiving emails from it, send an email to macvisionaries+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/macvisionaries/1E2176A1-5767-4E20-81D9-A880F0534B6C%40hopewell.org.uk. -- The following information is important for all members of the Mac Visionaries list. If you have any questions or concerns about the running of this list, or if you feel that a member's post is inappropriate, please contact the owners or moderators directly rather than posting on the list itself. Your Mac Visionaries list moderator is Mark Taylor. You can reach mark at: mk...@ucla.edu and your owner is Cara Quinn - you can reach Cara at caraqu...@caraquinn.com The archives for this list can be searched at: http://www.mail-archive.com/macvisionaries@googlegroups.com/ --- You received this message because you are subscribed to the Google Groups "MacVisionaries" group. To unsubscribe from this group and stop receiving emails from it, send an email to macvisionaries+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/macvisionaries/8685493A-9668-4104-8AEC-68B10ABE869D%40me.com.