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2.1.7.1 Milestone none

If a problem prevents user programs from starting normally, the Solaris 10 OS can be instructed to start as few programs as possible during boot by specifying -m milestone=none in the boot arguments. Once logged in, svcadm milestone all can be used to instruct SMF to continue initialization as usual

From

Cover of Solaris™ 10 System Administration Essentials

Note

Useful boot args for troubleshooting boots (unique to Solaris)