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A read-only kernel boot?

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    A read-only kernel boot?

    Typically, when you boot the kernel, you do so passing a read-only (ro) kernel option, like this:

    kernel /boot/vmlinuz-2.6.24-23-generic root=UUID=xyz ro quiet splash

    If you have to, in an emergency, how bad is it if you don't pass the ro option, like this:

    kernel /boot/vmlinuz-2.6.24-23-generic root=UUID=xyz quiet splash
    An intellectual says a simple thing in a hard way. An artist says a hard thing in a simple way. Charles Bukowski

    #2
    Re: A read-only kernel boot?

    Mike, I found this:

    http://www.kernel.org/pub/linux/kern...h/lkn/lkn_pdf/

    if you open the "ch09.pdf" and read down far enough, it says "ro" overrides "rw" if it was specified earlier, but it also says "ro" is the default. So, with no "rw" specified anywhere, the absence of "ro" should not hurt anything, since the default is also ro.

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      #3
      Re: A read-only kernel boot?

      Great! Even better than I had hoped for (which would have been "minimal risk of damage done"). And, you would think/hope, that's the way it should be, right? a r-o default. Many thanks for digging this up for me.

      An intellectual says a simple thing in a hard way. An artist says a hard thing in a simple way. Charles Bukowski

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        #4
        Re: A read-only kernel boot?

        Originally posted by Qqmike

        Many thanks for digging this up for me.
        Glad to help -- I learned something too!

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