what is Kernel?how to access the kernel in OS

What do we mean by kernel in Linux OS?how we can access the kernel ?how to modify this kernel?for one OS how many kernels exists?what is the significance of this?does windows has also kernel?

a kernel is the core of the OS.

kernel contains the routines for system and memory management,
execution of the programs(processes) and hardware management.


windows and linux and all osses will have a kernel.

for example in windows kernel is available as 'kernel32.dll'

srizbf
25thjune2010

But U have not mentioned about making changes in these kernel and also about kernel level programming.

kernel level change (programming) possible only in linux.
can only access kernel in windows not change.


if you are a kernel level programmer then this post is redundant(!!!).
srizbf
25thjune2010

What do we mean by kernel in Linux OS?
1. Kernel provides all the bundle of software through which you can access
hardware without having much knowledge of it.
It provides lot of management sub systems like.
1. File sytem
2. Memory management
3. Network management
4. Process Managment
And many more......


how we can access the kernel ?
Do you mean that you want to get source code of kernel or regarding changes in
kernel.

to download linux kernel The Linux Kernel Archives
to make changes you have to read and know lot of things for that.
Few documents I am uploading in this page [ **broken link removed** ]

how to modify this kernel?
to make changes you have to read and know lot of things for that.
Few documents I am uploading in this page [ **broken link removed** ]


for one OS how many kernels exists?
On Linux it is possible to compile and configure multiple kernels but at a time
only one can boot.
[ If you want more details [ GNU GRUB - Wikipedia, the free encyclopedia ]


what is the significance of this?
I did not got this question.............

does windows has also kernel?
Yes windows has kernel but Microsoft will not provide you that

Thanks & Regards,
vasu
NO SIGNATURE LINKS ALLOWED

what is the significance of this?
I did not got this question.............



My intention was to ask what changes i OS that we can do by doing kernel level programming?