Re: How does linux boot
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On Friday 22 October 2004 01:19 pm, Paul Johnson wrote:
> Ritesh Raj Sarraf <riteshsarraf@users.sourceforge.net>(by way of Ritesh Raj
Sarraf <riteshsarraf@users.sourceforge.net>) writes:
> > The computer is on. The BIOS loads the boot-loader. The boot-loader
> > loads the kernel image. If the kernel image has modules, initrd also
> > gets loaded so that appropriate modules can be loaded for the kernel
> > to identify the hardware, filesystems etc etc...
>
> BIOS does a POST, and if successful, hands off to the bootloader. The
> bootloader loads the kernel image, then the initrd. Kernel then
> starts running, loads modules.
Where does it load the kernel from ? The disk, right !
Suppose the disk I've got is scsi. Linux requires little arguments and add
modules to work to boot with scsi disks in comparision to ide disks.
A lot of work for the kernel.
In constrast, how does the boot-loader get the kernel image from the disk
(scsi).
Very simply. Doesn't it face the problems of very new technology disks ?
Infact it detects everything.
I think Alvin's reply is convincing. The boot-loader loads the information
from the first 512 bytes of the disk and processes further.
rrs
- --
Ritesh Raj Sarraf
RESEARCHUT -- http://www.researchut.com
Gnupg Key ID: 04F130BC
"Stealing logic from one person is plagiarism, stealing from many is
research".
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Reply to:
- References:
- How does linux boot
- From: Ritesh Raj Sarraf <riteshsarraf@users.sourceforge.net>(by way of Ritesh Raj Sarraf <riteshsarraf@users.sourceforge.net>)
- Re: How does linux boot
- From: Paul Johnson <baloo@ursine.dyndns.org>