The layer between your hardware and software. It manages disk input/output, memory allocation, graphic acceleration, hosting device drivers and various other resources.

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2
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1answer
459 views

Install Linux (BackBox/Ubuntu) beside Mac OSX

I have a MacBook Pro late 2008, 120 GB SSD & 250 GB instead of the CD-Drive. Now there's Mac OSX on both, but I want to install Linux Ubuntu on the HDD. Now there is the problem: "What Bootloader, ...
0
votes
1answer
68 views

Cannot switch between 2 operating systems [duplicate]

Guyz... I've installed two OS i.e. Win 8 and a Debian distro. First I installed the debian one and then partitioned some free space for WIN 8 and then installed Win 8. The problem here arises that ...
2
votes
1answer
453 views

Can't choose between Fedora 18 or Windows 7 at startup

I've installed Windows 7 on my system, and made three partitions: one of 180 GB, one of 210 GB and one of 75 GB. I've made a bootable DVD with Fedora 18 from an ISO file and installed Fedora on the ...
1
vote
1answer
2k views

How can I force the boot menu to always show up at start up without pressing F10?

I have Visual Studio 2010 installed on Windows 7 on one hard disk and Visual Studio 2012 installed on Windows 7 on another hard disk in the same computer. When I start up my system, I want the boot ...
0
votes
2answers
158 views

Reinstalling XP without disk or key

I apologize if this is a duplicate in advance. I need to reinstall windows XP since it has become very slow and I suspected loaded with worms and root kits. I have uploaded all the files I need to ...
18
votes
4answers
3k views

Why does Linux use a swap partition when the kernel supports paging/virtual memory anyway?

As far as I understand paging and swapping, they're completely different concepts. While swapping means, that a process is either completely in physical memory or on the hard drive, with paging parts ...
1
vote
0answers
2k views

Windows 7 laptop suddenly very slow; cannot determine cause

I am working on a friend's laptop that became suddenly slow - to the point of not being usable. Boot time is fine, but Windows 7 takes forever to load and run. It is an HP Pavilion dv6. Here is the ...
1
vote
3answers
155 views

How can I install Windows without uninstalling existing Linux?

I installed Lubuntu 12.10 on a single drive. How can I install XP without uninstalling Lubuntu 12.10?
1
vote
2answers
608 views

Installing Windows 7 and Windows 8 in same partition

I have Windows 7 installed on my pc. In c:\ I want to install Wwindows 8 on the same drive as I have created the partition size as 350 Gb. I want to keep both Windows installations on the same ...
-2
votes
1answer
111 views

Can Ubuntu or Windows run OS X?

Can Ubuntu run Mac OS X? I currently run Windows 7 – can I download and run one of the OS X programs?
10
votes
2answers
1k views

How to stop and detect the fork bomb

#include <stdlib.h> #include <unistd.h> int main() { while(1) fork(); } This is the code for a fork bomb. In our college, we connect via telnet i.e client serving protocol. ...
3
votes
2answers
962 views

How to improve ram and hard drive performance

I'm not able to figure out what the actual problem with my system is. It takes 15-20 min to start up completely and when I checked the start up programs there was no big program listed. When I open ...
0
votes
1answer
4k views

Redirecting or routing all traffic to OpenVPN on a Mac OS X client

I have configured an OpenVPN (2.2.1) server on an Ubuntu virtual machine in the Amazon elastic compute cloud. The server is up and running. I have installed OpenVPN (2.2.1) on a Mac OS X (10.8.2) ...
1
vote
2answers
724 views

I want to run an rsync command at midnight but make it stop at 8am. How can i schedule the start AND END of a command?

I want to run an rsync command at midnight but make it stop at 8am. How can i schedule the start AND END of a command? I've looked into cronjobs but that will only start at a certain time. Any ideas ...
1
vote
2answers
341 views

Is there any minimal operating system to run virtual machines?

I would like to use a OS X in a virtual machine, the problem is running the VM in Windows or Ubuntu because the host OS takes a lot of CPU. Is there any very minimal operating system that can ...
-3
votes
1answer
75 views

USB Driver for Windows [closed]

I want to make a usb driver in c for windows. I have good background in c and c++. Can anybody suggest me how should i start my development?any suggestion?
0
votes
1answer
80 views

Modifying the linux scheduler

I want to change specific parameters of the linux CFS scheduler like the virtual runtime of particular processes dynamically ( vruntime parameter in the sched_entity ). Is there any definite method to ...
1
vote
2answers
401 views

Image is too big for DVD, even though the image is small enough?

I am trying to burn an ISO image to a DVD. The DVD is supposed to store 4.7 GB, but when I try to burn the image to it, Windows says the DVD is too small. The image is 4.51 GB big, and uses 4.51 GB ...
0
votes
1answer
74 views

Files are now readonly

I am using windows 7. All my folders became read-only suddenly and I cannot edit any type of file on my computer. Yesterday it was fine, but suddenly I discovered this when I am trying to edit some ...
1
vote
3answers
31 views

Change operating system on boot up

I'm trying to figure out how to get the menu to change your operating system on computer start up. I Have windows 7 & I'm trying to install Ubuntu.
1
vote
1answer
202 views

What is Root Buffer Overflow?

I understand what buffer overflow is. As the literature says, "A buffer overflow occurs when a fixed-length buffer reaches its capacity and a process attempts to store data above and beyond that ...
1
vote
0answers
94 views

Using Bootcamp with Windows Recovery Disks?

My friend is a regrettable Mac owner and wants to play some Windows-only games. I recently built a new computer with 7 and kept the CD Key from my old Vista 32-bit installation. He has a 1-2 year old ...
1
vote
5answers
4k views

How do I exclude specific directories from a Windows search?

I want to search for a file on drive C:. I know for sure it does not exist in a specific directory(s) (say Program Files). So to shorten my search time, I want Windows to exclude searching in those ...
-1
votes
0answers
13 views

Dual OS configuration [duplicate]

I have installed windows and Linux(ubuntu) on the same machine. Now the problem is when I start my machine, It directly goes to Linux and not asking me for the selection of OS either I want to load ...
1
vote
1answer
97 views

System restarts automatically

I have installed both Ubuntu 11.10 and Windows 7. My system was working fine when suddenly I got the blue screen of death (bsod) while logging into windows 7. It said about the ACPI compliant and when ...
1
vote
2answers
301 views

ls executes slowly on remote server

I have a very strange problem, one that may be too difficult to diagnosis without machine access, but maybe someone here may be able to help. I am using OS X, and on my local machine ls executes ...
2
votes
2answers
389 views

Merge two 1GBps NIC's on a single PC

Is it possible to merge two 1GBps NIC's on a single PC thereby doubling the available LAN bandwidth? Two other PC's would then be able to request data at 1GBps each instead of splitting the 1GBps NIC ...
-1
votes
1answer
185 views

HTC ONE X Custom ROM Issue [closed]

I tried to install a custom ROM on my htc one X without making any backup. My new custom ROM did not installed correctly. It is just showing X type logo of custom ROM after htc splash screen. I can go ...
0
votes
0answers
47 views

Create Windows XP restore partition

I have a computer without CD Drive and use to install windows XP regularly as I am using for my cyber cafe. To make it easily install my window XP I would like to create a restore partition in my ...
0
votes
2answers
58 views

Keeping bootable images of all my operating systems and run them over LAN

I love being able to run what ever, whenever. Is is possible to store images of all my operating systems on a server, and run them over a LAN whenever I need to, on what ever computer I log in from? ...
1
vote
1answer
43 views

what does giving control to an application mean?

I'm reading Operating System Concepts by A. Silberschatz et al. I'm trying to understand what is Dual-mode operation of an operating system. It states in page 22 that: Initial control resides in ...
4
votes
2answers
183 views

One USB flash drive to rule them all

Yesterday I purchased a 32GB USB flash drive. I have a myrid of systems in my home, and would like to have one flash drive with setup files for all the various systems throughout the house. I kept ...
3
votes
3answers
4k views

Memory limits in 16, 32 and 64 bit systems

The theoretical memory limits in 16, 32 and 64 bit machines are as follows: 16 bit = 65, 536 bytes (64 Kilobytes) 32 bit = 4, 294, 967, 295 bytes (4 Gigabytes) 64 bit = 18, 446, 744, 073, 709, 551, ...
2
votes
1answer
96 views

Would installing Windows 8 be better than System Reset

I'm trying to fix a fairly new windows 8 system, it has crashed from what seemed a windows system corruption. I tried doing a system reset, it worked fine then i gave it back to the owner. Again it is ...
0
votes
1answer
103 views

Linux OS for Mac PowerBook g3 (1998)

So I got a PowerBook G3 off EBay (I don't know why, I just did) and it arrived. Now that I have it i realised that is nearly useless running Mac OS 9. My question is : Is there a Linux distro, like ...
3
votes
1answer
7k views

how to fix empty turn windows features on or off

I am running win 7 home premium, and now I see my windows and features list is always empty, i tried many solutions but nothing did it. I tried this last thing but failed to solve as well
0
votes
0answers
221 views

Unable to boot Centos 6.3 from live CD

This seems a strange question to ask. The the same cd boots perfectly on one PC but gives the message- slab error in kmem_cache_destroy():cache 'Acpi-Operate':can't free all objects slab error in ...
1
vote
1answer
60 views

Is it better to store the OS, data files or program file on a SSD? [closed]

If a system has one 120GB SSD what is the most efficient use of it? I heard since most programs make calls to the operating system it increase the performance of everything if you install the OS on ...
4
votes
3answers
330 views

Difference between programs compiled for different OS

On a compiled code standpoint what is the difference between a program compiled for one os vs another (Linux vs windows for instance). Doesn't the program run directly on the cpu? Or is it because the ...
0
votes
1answer
54 views

Seek performance characteristics for RAID design

I am trying to come up with an optimum RAID read policy. I've noticed that with a 64K RAID chunk size on a recent 1.5TB drive, where a given data is read in 64K chunks in a round-robin fashion from 3 ...
0
votes
2answers
481 views

Is there any disadvantage to running a 64 bit OS on a low memory system? [duplicate]

Possible Duplicate: advantage of 64 bit os on system with only 2Gb Is there any disadvantages in running a 64 bit OS on a low memory system, say 2GB of RAM or less? Would there be any ...
1
vote
1answer
205 views

Install Windows 8 from USB but keep Windows 7 and Ubuntu

I wish to install Windows 8 on my laptop. Currently, I have Windows 7 and Ubuntu 12.10 (Quantal Quetzal) available when I boot my computer up. Is there a way for me to install Windows 8 using a USB ...
1
vote
3answers
248 views

would a core failure on a multicore computer cause system instability?

Say for example, one of the cores in a quad core computer overheated and died, would the system compensate by routing all operations to the remaining 3 cores, or would the computer be inoperable? If ...
1
vote
1answer
71 views

PC system repeats for 15 times keyboard's key strikes in random moments

I have a PC system with a really strange issue, I think it's hardware. While typing, at random moments and usually after repetitive strikes of any key, or fast typewriting, it repeats the last ...
1
vote
2answers
633 views

Wiped a hard drive and now I can't install an OS X on it?

I had 4 hard drives that I put in to my new computer and wiped them individually using the cipher command in Windows 7 and then formatting in the windows explorer. They all worked prior and I could ...
5
votes
4answers
2k views

How do multi-core CPUs work?

I know, vague question title, but my main question is, does 1 core have to execute only one program at a time? Does the "multitasking" at the CPU level work by switching between tasks, and if so, why? ...
0
votes
1answer
37 views

Move focus to next window on Windows 7

On OS X you can move focus (also called cycle through windows) to the next window for the same application. If I have 5 windows open in Finder, I can cycle through them with CMD+shortcut. Only the ...
1
vote
4answers
197 views

Create Live Ubuntu or Windows System on USB

I would like to install Ubuntu to a USB Flash Drive so that when I boot my computer I can boot into the Flash Drive which will have UBUNTU Installed. The objective here is to put some tools on the ...
0
votes
2answers
2k views

How can I make my computer ask me which OS I want to load while booting?

I have 2 hard disk, one with one partition with OS, and the other with 2 partitions, one with OS and the other one whithout. I want to be able to decide which OS I want to load each time I boot the ...
2
votes
2answers
70 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 ...