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- [Instructor] Let's look at interrupting GRUB

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and setting a kernel command line parameter.

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So I have a VM here in Microsoft Azure,

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and if you're using that, you can find

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the zero console here underneath help.

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So I'm going to do a reset VM hard.

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Hit the reset, and then hit escape button immediately.

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I hit it a couple of times.

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I got this.

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I'm going to exit out of that to get here.

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And then if you read the little paragraph on the bottom,

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you can do an E to edit, so I'm going to do E,

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and I'm going to do my down arrow

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and look for the Linux line

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with a kernel and the command line arguments.

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And there we have one.

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I go down one line, then I go back.

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Easy way to get at the end of the line.

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I'm going to add a command on an argument.

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I'm just going to make one up.

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I'm going to call it new_cmd_arg.

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There is none with that name.

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And then if you read the little paragraph below,

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I could do a control X or an F 10 boot.

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I'm going to do a control X

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and now it should boot with no problems.

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And now I get a login prompt.

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And I'm going to do a D message with sudo

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and see if it's got my new command arg in there.

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There we go.

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Notice it tells us it'll be past a user space.

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That's fine.

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And then let's cat proc command line.

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There it is at the end.

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Looks like it worked.