how to replace kernel on Ubuntu

[Marvin Stodolsky]

re: > I replace my ubuntu with older version as 2.6.18, will it be ok?
Typically yes.
New installations are usually back compatible to many earlier kernels.
But if you have to do compilng under the earlier version, also be sure
to install the corresponding linux-headers-earlier_version.
Otherwise you may not be able to compile modem drivers needed to get on line.
If the earlier version used an earlier GCC compiler, that will be necessary.
Be sure to set the symbolic link /usr/bin/gcc
$ ls -l /usr/bin/gcc
lrwxrwxrwx 1 root root 7 2009-09-07 19:21 /usr/bin/gcc -> gcc-4.3
Check which GCCs are installed with:
$ ls -l /usr/bin/gcc*

MarvS

On Fri, Oct 9, 2009 at 12:19 PM, NoOp <glgxg at sbcglobal.net> wrote:
> On 10/09/2009 02:08 AM, loody wrote:
>> Dear all:
>> I try to replace the kernel under my Ubuntu.
>> my questions are:
>> 1. what is UUID used for? It seems replace "root=/dev/sda1"
>>     is there any tool or command I have to do to getting this number?
>> 2. from 2.6, we use initramfs instead of initrd, but why we still need
>> to add "initrd" option in menu.lst.
>> 3. is there any restriction of kernel version to replace in Ubuntu; if
>> I replace my ubuntu with older version as 2.6.18, will it be ok?
>> appreciate your help,
>> miloody
>>
>
> Maybe these will help:
>
> https://help.ubuntu.com/
> 1. Enter 'UUID' in the search bar.
> <https://help.ubuntu.com/community/UsingUUID>
> 2. Enter 'initrd' in the search bar. Click on 'Technical'
> <http://manpages.ubuntu.com/manpages/jaunty/man7/bootparam.7.html>
> Also:
> http://www.gnu.org/software/grub/manual/html_node/index.html
> 3. Don't know.
>
>
>
>
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