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Considering the speed and versatility of Thunderbolt, it can be very useful to boot from a thunderbolt device on a Mac.

Would it be possible to use a disk image on one Mac to create a virtual bootable drive? On top of that, how can you connect one Mac over Thunderbolt to the other, and actually boot from the disk image stored on the other Mac?

  • Do you want to boot Mac(a) from a diskimage stored on Mac(b) or do you want to boot Mac(a) from a diskimage stored on Mac(a) – Harcker Jan 29 '18 at 14:16
  • I’m hoping to find a way to boot Mac A from a disk image stored on Mac B, ideally without actually shutting down Mac B. I have found out I could maybe make Mac B a NetBoot server, but that requires Mac A to explicitly trust it before that will work. – Jake3231 Jan 29 '18 at 14:17
  • What about creating another bootable partition on Mac(B) – Harcker Jan 29 '18 at 14:20
  • The reason I ask about a virtual disk is because I’d like to avoid actually partitioning or even shutting down Mac B. I hope to figure out how to do this with preexisting tools, then compile a software product that would allow your Mac (B) to offer itself as a boot source over Thunderbolt to Mac A. This would ideally only happen while the product is running. – Jake3231 Jan 29 '18 at 14:24
  • If you’re using APFS you can create partitions with a variable size, so it won’t fill up unecesary space – Harcker Jan 29 '18 at 14:26

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