BhaskerReddy Amireddy wrote:
Hello all,
Where does this anaconda programs sits when I put Redhat CD ONE in to
CDROM.
You may want to look at these links
http://rau.homedns.org/twiki/bin/view/Anaconda/Introduction
http://rau.homedns.org/twiki/bin/view/Anaconda/AnacondaDocumentationProject.
Initial loader is written in C it needs some OS to run So How it
identifies Hardware first?
The PC BIOS is a single task piece of software whereas the Linux kernel
is multi task. (The first amusing thing I found out about Linux is that
you could see the history of a session with the shift-page up key
combination. In addition, you can use Alt-f1 to Alt-f6 key combinations
to have multiple console sessions. Compare this with MSDos that allows
just one and no scrolling, etc.) However, the PC BIOS serves the
purpose of identifying the boot sector of the first boot device.
Syslinux and in this case isolinux http://syslinux.zytor.com/ control
the boot sector on the media. isolinux has a control file to tell it
where to find the kernel on the media and then uses that information to
load the kernel. The kernel is a multitasking piece of software and
replaces all of the PC BIOS single-task functions. The kernel detects
the hardware. So, isolinux then loads the kernel that then loads the
Initial loader that is written in C. I believe part of the initial
loader you are talking about also has many of the kudzu detail hardware
detecting routines. Kudzu organizes the kernel detected hardware. After
the C program does all of its work, it then launches the Python script
anaconda. The Python libraries written by both Python.org and Red Hat
take over and do the rest. Hopefully, this provides a quick high level
rundown of the boot process. It's guaranteed to be as accurate as I
understand the process. ;-)
Greg
