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Can I install both SunOS and Solaris on the same machine, and choose between them at boot time?

April 26, 2017boot install Machine Solaris SunOS time

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Can I install both SunOS and Solaris on the same machine, and choose between them at boot time?

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Yes, that is possible. All partitions other than the system partitions (typically /, /usr, /var and /opt) can be shared by the two OSes. All partitions, including the system partitions, can be mounted and accessed by either OS. The easiest way to set this up is to do separate suninstalls on two different disks. Then just choose the appropriate disk at boot time with the PROM’s “boot” command. Setting up both OSes on one disk is a little harder, but not much. You need to partition the disk to allow for both OSes.