-1
votes
1answer
29 views

How does “explorer.exe” work and control the GUI?

All info states that this is the main shell of Windows 3.x versions and up of Windows OSes. My question is, how does this program have access to the entire GUI and screen/framebuffer data to draw and ...
0
votes
2answers
63 views

installing linux without any packages

I am programming a OS based on Linux but I want to "re-invent the wheel" in this OS just as an achievement. I have been told that Linux can be installed on a PC without any packages (obviously causing ...
2
votes
0answers
34 views

What actually happens when computer hangs [closed]

When we come to a point where computer hangs, what does actually happen inside of Windows's or Linux's kernel? Could a user space application be the cause that a whole os i frozen or could it just ...
0
votes
2answers
156 views

What does the below sentence mean? [closed]

Windows CE is a distinct operating system and kernel, rather than a trimmed-down version of desktop Windows. — Wikipedia's Windows CE entry. The cited source for that sentence in Wikipedia is a ...
2
votes
1answer
45 views

How is system call executed [closed]

From the point of view of application programmer the system call is just invocation of a procedure from wrapper library. As I don't have good knowledge of assembly I was wondering how it is done on ...
1
vote
2answers
97 views

Will applications running in root mode be able to overwrite OS's or other program's memory section?

I read here that any application running in root mode can issue a kernel call and execute in kernel mode. Is is possible that ANY application running in root mode can make a kernel call, go to kernel ...
2
votes
2answers
73 views

Library functions are always implemented using system calls?

We know that system calls are requests by a process for a service from an operating system's kernel.[1] I'm asking this question because I wanted to know if a process can really generate a signal on ...
1
vote
1answer
54 views

Swapping laptops while keeping current systems (kernel)

I am going to be getting a new laptop from HP soon, due to a faulty part, and they are giving my an upgrade. Almost all of the specifications will be changing, but I'm not keen on reinstalling my ...
1
vote
1answer
691 views

How to set Linux processor affinity to single core?

How can I set processor affinity in Linux machine (Fedora) that user duel core Intel(any) CPU? I want the other core to shut down. Thanks
-1
votes
1answer
858 views

Clarification on diagram about OS and user processes

I was looking at different relationships that can exist between an operating system and a user process. I came across the figure below. It shows an architecture where the OS functions execute with ...
35
votes
2answers
2k views

What is there in an Operating System other than the kernel

As I understand it, the kernel does all the interaction with the hardware, and manages the memory, the I/O devices, etc. So the kernel is doing everything, yet it is just a part of the operating ...
2
votes
3answers
12k views

Windows Kernel Name\Version?

Mac OS X has the Darwin 10.6.0 Kernel, and Ubuntu has the Linux 2.6 Kernel, so in Windows what is it called?
4
votes
2answers
375 views

device driver and kernel

Are device drivers part of a OS kernel, or outside the kernel, or some are part of the kernel and others are outside the kernel? If the third is correct, what devices' drivers are usually part of ...
6
votes
3answers
1k views

Kernel and User mode distinguishing

Who is responsible for determining that the process is in the Kernel mode or User mode? I know kernel knows which process is belong to what space, but how the CPU determines that? I mean should CPU be ...
3
votes
4answers
488 views

Does a software like VMware run in user space or kernel space?

Vmware is a user installed software. So it should run in user space given by the underlying OS. Yet its runs OS-es which are fully operational and need to run in kernel mode. So where does it run?