Once the kernel is loaded by either the default loader
(Section 13.3.3, “Stage Three, /boot/loader
”) or by boot2 (Section 13.3.2, “Stage One, /boot/boot1
, and Stage
Two, /boot/boot2
”), which bypasses the loader, it
examines any boot flags and adjusts its behavior as
necessary.
Here are the more common boot flags:
-a
During kernel initialization, ask for the device to mount as the root file system.
-C
Boot from CDROM.
-c
Run UserConfig, the boot-time kernel configurator.
-s
Boot into single-user mode.
-v
Be more verbose during kernel startup.
Refer to boot(8) for more information on the other boot flags.
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