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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2answers
2k views

What does the 'bit' mean in an OS

I know there are 32/64 bit OS in the market. Q1-> But what does this bit mean actually ? Q2-> What is the lowest bit OS and highest bit OS ?
2
votes
5answers
2k views

Do I need more RAM for programming if I switch to a 64 Bit OS?

Given that today (for performance reasons?) variables are usually aligned to the "bit-width" (I wanted to use "word-width" here, but on x86 a "word" is still 16 bits right?) of the processor, would ...
1
vote
1answer
762 views

Operating system not found after downloading skin pack

My brother has downloaded a executable file from Skin Pack — I believe it was the Mountain Lion IO6 skin pack. He's using an Acer Aspire 553G. And now his operating system won't start (Windows 7). ...
1
vote
2answers
2k views

64bit vs 32bit Operating Systems, which one to choose having 2GB RAM? [duplicate]

Possible Duplicate: 32-bit vs. 64-bit systems There is several talks about it, most people way "64bit all the way", but I'm wandering if for a 2GB machine 32bit is just fine. Currently ...
0
votes
1answer
404 views

Windows 8.1 Factory Reset w/ Upgraded SSD and OS on that new SSD [closed]

Why I am doing this: I download the wrong graphics card driver update and now my graphics card has gone haywire. After trying several things with NVIDIA, including installing the right driver, and ...
0
votes
1answer
500 views

Linux Mint VM in VirtualBox freezes with DISKFULL error

Disk partitioning guide for Linux Mint Debian This guides shows me how to partition my HD for Linux Mint. I'm trying to install Mint as a guest client on Windows 7 hosted VirtualBox. I used to let it ...
0
votes
2answers
5k views

What is the difference between Local Disk and New Volume?

We have a product ,while doing some operation we found this error "Logical disk 'C:' was not found" . When i checked my "C" folder i saw its named as 'New Volume (C:)' , but when i changed to 'Local ...
65
votes
5answers
7k views

What are the functions of the BIOS while the operating system is running?

I always wondered whether the BIOS (apart from conducting POST, starting the bootloader and passing control to the OS after one presses the power button) has any purpose or function while the ...
33
votes
5answers
27k views

Overriding HOMEDRIVE and HOMEPATH as a Windows 7 user

My employer has an Active Directory group policy which sets my Windows 7 laptop HOMEDRIVE to "M:" (a mapped network drive) and my HOMEPATH to "\". Since I have read-only permissions for the root of ...
16
votes
2answers
25k views

Use physical harddisk in Virtual Box

Using Virtual Box, how can I install an OS to a secondary, physical disk, and boot it in both (at separate times) Virtual Box, and as a typical secondary OS install?
37
votes
4answers
3k views

Linux is to mount as Windows is to _______?

So Linux "mounts" a hard drive to perform some operation such as reading/writing. Does Windows "mount" in the same way? Is it called something different in the context of Microsoft?
60
votes
13answers
7k views

Is Unix not a PC operating system? [closed]

I am doing my bachelor's degree at a university. In a written assignment, the professor posted the task: "Name three PC operating systems". Well, I went on an included a variety of OSes (Linux, ...
11
votes
4answers
6k views

How does USB device recognition work?

I'm curious how USB device recognition works in Windows. I imagine it's something like this: When you plug in a device, it tells Windows "here's my device ID to tell you what I am" Windows looks to ...
16
votes
1answer
28k views

cat /proc/meminfo what do all those numbers mean

In reading the man page on the free command in Linux. I found that is gets its info from /proc/meminfo. I understand a few of the entries, like MemTotal and MemFree. What do the rest mean. cat ...
10
votes
2answers
2k 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. ...
9
votes
3answers
27k views

Is it the address bus size or the data bus size that determines “8-bit , 16-bit ,32-bit ,64-bit ” systems?

My simple understanding is as follows. Memory (RAM) is composed of bits, groups of 8 which form bytes, each of which can be addressed ,and hence byte addressable memory. Address Bus stores the ...
18
votes
4answers
4k 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 ...
7
votes
3answers
7k views

Difference between shutdown ( power off ) and restart ( reboot )

What is Difference between shutdown (power off) and restart (reboot) ? What type of signals passing at time of reboot and poweroff, to where ? What is difference between these two signals ? At ...
7
votes
4answers
4k views

Do operating systems run faster on smaller hard disk partitions?

If I partition my hard disk, is my computer going to perform faster/better? In other words, the smaller the active partition is (the partition with the operating system), the faster the operating ...
6
votes
4answers
2k views

What determines endianness

I was wondering if endianness only depends on CPU? Does it depends on other hardware, such as memory, secondary storage device? Does it depends on OS? Why in Wikipedia, does it seem to be true? ...
5
votes
5answers
295 views

Linux/Unix in Windows

What would be the best way to get the full-blown Unix/Linux bash inside Windows? I don't mean the Virtual Machine, but rather only the terminal with mounted NTFS drives. This way I could use the ...
4
votes
3answers
1k views

Minimal OS for running virtual machines

Is there a minimalistic operating system built purely for the purpose of running virtual machines (preferrably open source / otherwise free)? If not, let's say I decided to do something like Linux ...
3
votes
2answers
2k views

Structure of Chromium OS

I have used Chromium OS built distributed by hexxeh (weird hobby of mine). On Friday I gave a presentation (classroom activity, not some big seminar) in college on "Changing trends in Operating System ...
2
votes
3answers
2k views

Install OS over network [closed]

Recently I read some articles, in this article told install OS over network. How can do this? So I had three doubt. My question is Is it possible to install OS from server to all system? if it ...
1
vote
3answers
245 views

How does a driver actually communicate with an hardware device? [closed]

I already know what a driver is and in the answers of this old question What is a driver, and how does it work? you can find some simple and high level definitions of what a driver is. My question is ...
12
votes
6answers
2k views

Does opening a lot of tabs in Google chrome cause a performance issue?

I have heard that each tab in a Google chrome is a separate process. So if any tab crashed it won't be affected to the whole browser. So if you open so many tabs there will be as many processes in the ...
8
votes
4answers
2k views

What happens when a computer starts?

I'm trying to understand what happens when a computer is turned on. How the computer works on startup, various initializations that take place, etc. For example, is the bootstrap loader the first ...
6
votes
4answers
1k views

What is technically wrong with fast OS switching?

An application (fast switcher) stays resident before the OS starts, and will be activated using a key combination (for example: Ctrl + Alt + Shift + Esc). After detecting the key combination, the ...
5
votes
3answers
6k views

What do the terms “asynchronous” and “synchronous” mean, with respect to the definition of an interrupt?

Quoted from http://en.wikipedia.org/wiki/Interrupt: an interrupt is an asynchronous signal indicating the need for attention or a synchronous event in software indicating the need for a change ...
3
votes
7answers
703 views

Why do I have less memory with 32 bit OS [duplicate]

Possible Duplicate: Will Windows 7 32 bit edition support 8 GB RAM? I have a brand new machine at work, i7 quad core with 8GB of ram. Mainly, I use it to develop JAVA applications using ...
2
votes
1answer
410 views

Connecting to host OS database from guest OS VirtualBox virtual machine

I’m using Pentaho BI server in a CentOS VirtualBox machine, and now I want to connect it to an SQL Server database that I am running in my Windows host OS (localhost). Is there a simple way to do ...
2
votes
2answers
202 views

How do I make zip files that unzip cleanly on any OS with native tools?

If I make a zip file on OSX 10.6 with the OS native tool, and unarchive it on Windows 7, it's root directory will be doubly nested in another one with the same name, and it will contain all kinds of ...
1
vote
2answers
9k views

Reinstalling the iPhone OS

After using my iPhone for over a year, I now have 7 pages of applications and the phone has started to become old and slow. Coming from the windows-world, I suspect that a clean install will help a ...
0
votes
2answers
853 views

Install windows from FLASH USB. Software

Please direct me to software which can create bootable USB with winxp on it. Yesterday I tried to create such on WIN7 and failed, I guess because of win7 admin rights. Moreover I created such usb on ...
46
votes
11answers
2k views

Was Windows 95 an Operating System? [closed]

This question maybe a bit historical, but we didn't have Superuser at the time. Around 2000 when I was starting my Computer science degree, a subject was Operating systems. The teacher asked us to ...
11
votes
4answers
508 views

What is a kernel panic?

I know that this sounds like a LMGTFY question but i thought i'd ask it so that google actually turns up (more) good results. What is it?
8
votes
2answers
1k views

What does the term “OS rot” refer to?

I'm asking because I just saw a question about the "Best way to avoid OS Rot in Windows 7" and had never heard of the term "OS Rot" before. It's semi-comprehensible from context in that question, ...
7
votes
6answers
1k views

Is file system part of operating system?

I was wondering if a file system on a storage device is part of OS? I don't think it is. Instead it is part of the storage device, and exists outside of any OS although was created by an OS. Is my ...
6
votes
2answers
22k views

Is it possible to buy Windows 8 online as a digital download?

Is it possible to buy windows 8 online as a digital download? (the full install non-upgrade version) Similar to the way windows 8 upgrade can be bought as a digital download from ...
4
votes
3answers
669 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 ...
4
votes
2answers
4k views

What is the difference between RTM, GA and GOLD versions?

I am absolutely puzzled here: What is the difference between RTM, GA(Gerneral Availability) and final GOLD version? For example for Windows 8: RTM - Microsoft sends this version to ASUS, Acer, ...
4
votes
1answer
285 views

Can I run my win7 on another machine with different motherboard?

I want to have my system with me in another city. I know that it strongly depends of my chipset. I have P35 (Gigabyte P35DS3R). Another machine also Intel-based but chipset is G31 (MSI G31TM-P35). Is ...
3
votes
3answers
227 views

Can anyone explain what is virtual memory?

In my system I am getting an error like "virtual memory is full". Can anyone explain to me what "virtual memory" is and how to fix that issue?
3
votes
2answers
1k views

unable to install windows 7 in my laptop with no os

I have a the following message when i try to install windows 7 through an bootable USB.. setup was unable to create a new system partition or locate an existing system partition I will explain ...
3
votes
2answers
4k views

Change the system partition in Windows XP

I attached two hard disks (Disk 1 and Disk 2) to an old computer system while installing Windows XP. Disk 1 is IDE and Disk 2 is SATA. I wanted to install Windows XP on Disk 1. Disk 2 was meant for ...
3
votes
1answer
396 views

Using an OEM Windows XP license in a Virtual Machine

I just bought a Dell 640m laptop with Windows Developer Preview installed. There is no directory with any backups. The COA on the machine is for XP. I would like to install XP as a VM on the same ...
3
votes
1answer
2k views

How do I find out if my computer's hardware is compatible with Ubuntu?

I'm going to switch OS. From Windows 7 to Linux (Ubuntu, I think). Problem is that I'm not sure about my computer's hardware. Will it be suitable and there will be working drivers for it? For example, ...
3
votes
1answer
132 views

Is it possible to install vmware on system not inside OS?

I am searching if it is possible to load vmware on system startup and choose which os to launch. like Windows, linux, debian etc.
3
votes
1answer
225 views

Windows Upgrade vs Full Install

I'm in the process of purchasing a Netbook for use while traveling. The included OS is XP, however, I would like to upgrade(?) to Windows 7. My question: Does a Windows Upgrade have the same ...
2
votes
2answers
75 views

Program in place of the OS

How can I run a program in place of an OS ? I mean is it possible for me to replace the OS with a custom made program which says "Hello World" as soon as the Hardware starts ?