3 ## 7.4 Kernel Interaction During Boot
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5 Once the kernel is loaded by either [ loader](boot-blocks.html#BOOT-LOADER) (as usual) or [ boot2](boot-blocks.html#BOOT-BOOT1) (bypassing the loader), it examines its boot flags, if any, and adjusts its behavior as necessary.
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7 ### 7.4.1 Kernel Boot Flags
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9 Here are the more common boot flags:
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11 `-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
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13 **Note:** There are other boot flags; read [boot(8)](http://leaf.dragonflybsd.org/cgi/web-man?command#boot§ion8) for more information on them.
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18 CategoryHandbook-booting
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