Re: info on System.map

From: ADAM Sulmicki (adam@cfar.umd.edu)
Date: Tue May 16 2000 - 12:09:55 EDT

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    > I assume the /boot/System.map file should be different for different
    > kernels. If so, how can we control this? With LILO I can pick
    > several kernels. But I don't see any way to choose different
    > System.map files.

    System.map is used at "run-time", that is after kernel has booted.
    It is used by stuff like..... whatever complains that your
    system map is invalid :-) (like ksymops, can't think of anything else
    right now, probably depmod too).

    Depending on program it might be smart enough to look at /usr/src/linux
    /boot/System.map-<version>, and furthermore checkc contest of those
    files against /proc/ksyms to see if it found right System.map

    In mine case solution was 'rm /boot/System.map' and don't put there
    anything else.

    > On a similar topic, what about the initrd*.img file on my RH6.2
    > system? How is this generated? I don't find such a file in the
    > kernel source directory tree after I compile.

    those are image files used to boot initial system off. you could do 'mkdir
    blah ; mount initrd-blah blah -o' and then cd into it and see what it has
    (you might gunzip the file first if it is gzipped). There should be more
    info about this in /usr/src/linux/Documentation. Bottom line you can
    use them but you DO NOT HAVE TO.

    -- 
    Adam
    http://www.eax.com	The Supreme Headquarters of the 32 bit registers
    

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