Welcome to the most active Linux Forum on the web.
Go Back > Forums > Linux Forums > Linux - Software > Linux - Kernel
User Name
Linux - Kernel This forum is for all discussion relating to the Linux kernel.


  Search this Thread
Old 06-12-2009, 09:30 PM   #1
Registered: Dec 2008
Location: Bengaluru, India
Distribution: CentOS, openSUSE, Mandriva, Slackware
Posts: 111

Rep: Reputation: 19
bzImage or vmlinuz? Some doubts related to kernel

I have some doubts regarding kernel compilation. I read all the 10 posts for 'compiling kernel' search. None really helped in clearing this doubt.

As I understand,
a) bzImage is the output of 'make',
b) entries in /lib/modules are the output of 'make modules_install' and
c) vmlinuz, config and are outputs of 'make install'.

I understand initrd.img and config. One is minimal set of drivers or such to boot system and then pass the control to actual kernel and the second is the configuration file for kernel compilation (Correct me if I'm wrong).

I however did not understand bzImage vs vmlinuz. Most distros use vmlinuz, but Gentoo is happy running from bzImage.

Is the difference between bzImage and vmlinuz, something like the difference between 'useradd' and 'adduser' where 'adduser' is essentially 'useradd' but does little more configuration like creating home directory and group by the same name, allocating default shell etc. :?

Also, I did not understand what exactly is Wikipedia and article by Peter at says, its like symbol table for the kernel. I'm not clear about it.

Why does Slackware use instead of initrd.img. Totally confused.

Can any of you explain it in more newbie-friendly way?
Old 06-12-2009, 10:07 PM   #2
LQ Veteran
Registered: Aug 2003
Location: Australia
Distribution: Lots ...
Posts: 15,797

Rep: Reputation: 2157Reputation: 2157Reputation: 2157Reputation: 2157Reputation: 2157Reputation: 2157Reputation: 2157Reputation: 2157Reputation: 2157Reputation: 2157Reputation: 2157
There is no difference - vmlinuz is merely a (renamed) copy of bzImage. Have a read of this.
There is no way could be used as an initrd image - and I don't think Pat would misname it; but I don't have a Slack system to check
Old 06-13-2009, 08:00 AM   #3
Senior Member
Registered: Jan 2008
Location: florida panhandle
Distribution: slackware64-current, puppy, ubuntu
Posts: 2,109

Rep: Reputation: 294Reputation: 294Reputation: 294
slack uses initrd.gz which is made when you run the mkinitrd command. Look at /boot/README.initrd


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Some security related and other doubts lali.p Slackware 9 06-12-2007 04:18 PM
Kernel Memory related doubts!!! linuxguy_72 Linux - Kernel 1 05-07-2007 10:40 AM
kernel compilation:throwing error related with sound during "make bzImage" b0nd Linux - Newbie 1 08-19-2005 09:16 AM
doubts related to rpm lexersrp Linux - General 1 01-23-2005 08:58 AM
Explain me bzImage, /vmlinuz to build kernel letdoit Slackware 3 05-23-2004 09:38 PM > Forums > Linux Forums > Linux - Software > Linux - Kernel

All times are GMT -5. The time now is 06:35 AM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration