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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What operating system can I use to turn my old computer into a home server?

I have a old desktop computer that I want to make a home server for file sharing purposes. It has 512 MB RAM and few GB of hard drive. Which operating system should be reasonable for this kind of slow ...
4
votes
2answers
4k views

How can I determine what version of Windows in the windows.old folder?

I would like to know if there are any files or directory structures that will tell me what was the previous version of Windows that created the windows.old folder.
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1answer
232 views

Installing Windows 1.04

I have Windows 1.04 on seven 5¼" disks, and I have a Dell from 2000 with a 5¼" floppy drive connected up. Now with the first disk in, and with the BIOS set up to boot from A:, after the normal Dell ...
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4answers
1k views

OEM Operating System for an Existing PC

Say that I'd recently purchased 10 PCs from a retailer, but ordered them without any OEM operating systems, am I then at a later date allowed to go back to the same retailer and purchase 10 copies of ...
4
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4answers
373 views

What are the risks (if any) of installing an older version of Linux

My machine has limited RAM capacity. Newer Linux distributions seem to require more memory (often 1 GB or more) and seem to consume more than 500 MB on itself. Is it safe to use an older version of ...
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3answers
2k views

is it possible to set hidden attribute on file/folder for windows from linux?

I want to hide 1 folder in my pen drive for Windows but from Ubuntu, is it possible if yes then how?
4
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3answers
1k views

External hard drive how to format it?

I just bought a hard drive of 500GB that I want to use on Mac OS X and GNU/Linux but be able to use some file on Windows. Basically I have to deal with FAT32 (That doesn't support file over 4GB), ...
4
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1answer
5k views

Who loads the BIOS in RAM during computer bootstrap

When the computer starts up, the code in BIOS is executed first. However, how is the code in BIOS loaded into the RAM for execution ? I have referred to this question - Is BIOS read from the BIOS ...
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3answers
644 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 ...
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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, ...
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4answers
10k views

Is it possible to set PATH on Mac OS X Lion without restarting?

Is there a way to set the PATH on /etc/paths without the need to reboot your Mac? I know I can do it using an alias but it's not permanent. For example, I want to set the PATH for MySQL.
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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 ...
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1answer
4k views

what is the use of bootnxt file in windows 8 installation disc

while exploring the installation media of windows operating system i could see the following list of files : Boot mgr - the boot sector loads the Windows Boot Manager (hidden system file BOOTMGR in ...
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1answer
178 views

How does windows 8 prevent BIOS access

I am trying to get a better understanding of how BIOS and operating systems work. From what I understand, BIOS is a basic piece of software that is the first thing to be run when a computer turns on ...
4
votes
4answers
389 views

The technical reasons to make 64 bit OS slower

From this post, I read the following comment. If you only have 2GB, I recommend you install 32 bit version, 64 bit will be much slower (because of several technical reasons about 64 bit ...
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votes
2answers
5k views

File sharing user limits

Each OS has a limit to the number of users that can access a computers shared folders at one time. XP has 10, 7 has 20. At one time I thought I saw a site where the limit for most OS's were listed. ...
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2answers
773 views

Mouse double-click min interval

This is the second mouse dying on me because of a poor switch ! Under most operating systems there is a option to set the max time interval in which two mouse clicks are processed as on double click. ...
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2answers
12k views

How to install Windows 8 in a system which has Ubuntu 12.04 and Windows 7 installed already?

I have a system in which I have installed Windows 7 first. I then installed Ubuntu 12.04 (Precise Pangolin) to the system. Now, the boot manager is GRUB and everything works fine as Ubuntu ...
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1answer
9k views

How to reduce Windows 8 system size?

Windows 8 consumer preview version is released. Anybody try out to reduce Windows 8 size? I have verified the method for Windows 7 is cannot workable on Windows 8.
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2answers
2k views

Difference Between Windows XP and Windows XP Embedded

What is the diiference between Windows XP and Windows XP Embedded environment and pros/cons of both these environments.
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2answers
421 views

Can someone explain to me how the CPU finds the source of an interrupt in OS theory?

I am currently doing a module in Operating Systems theory and I have a few concepts that I am unable to grasp - would this be the right place to ask questions ? My main question is about interrupts. ...
4
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1answer
48 views

Does Operating System modify BIOS in any way?

I am reading the book: How Computers Work: The Evolution of Technology and in Chapter 4 the author says: The operating system does not work alone. It depends not only on the cooperation of other ...
4
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1answer
558 views

What does an ACPI BIOS configure during boot?

When a PC boots with an ACPI BIOS, what does it exactly do? I understand that the point of ACPI is to allow the OS to control hardware resources and power management but before the OS is loaded ...
4
votes
1answer
8k views

How do preferred and alternate or multiple DNS servers work?

I was considering adding 8.8.8.8 to the end of my adapter's list of DNS servers as a backup in case everything fails, when it occurred to me that I don't really know how secondary and tertiary DNS ...
4
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1answer
134 views

Can I run Windows on a Macintosh (Mac Mini) computer as the default OS like any other PC?

I do not want to use mac OS at all, I just like the hardware. I dont want to use Paralels or Boot Camp. I think that it is possible because both Macintosh OS and Windows run on x86 or x64.
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1answer
228 views

In a multi-boot setup, does defragmenting from one OS affect the whole drive, or only its partition?

In other words, does defragmentation have to be done on each OS separately?
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1answer
97 views

What is /com/host?

The Perl documentation for Sys::Hostname contains: Attempts several methods of getting the system hostname [...]. It tries the first available of [blah blah] , and the file /com/host. If all that ...
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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 ...
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2answers
232 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 ...
4
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1answer
14k 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
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1answer
775 views

How does SSH tunneling work at low level?

I am interested in the exact mechanism that occurs when an SSH tunnel is stablished. Supposing we have 3 computers: LOCAL host, INTERMEDIATE host, and REMOTE host, with this topology: Localhost --- ...
4
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2answers
113 views

Who decides the RAID levels and architecture?

Is there some governing body that comes up with the specifications for different RAID levels? If not, how are they decided?
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2answers
671 views

What are the differences between ChromeOS and Jolicloud?

Jolicloud seems to be the first Cloud OS. How does it compare to Chrome OS? What's the difference between them? Just mixed local/cloud vs absolutely cloud?
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2answers
122 views

Understanding an Application based on the OS interaction with a Hypervisor

Following I will ask a few specific questions but I will set the stage first. My goal is to monitor Applications in a very odd place - between the OS and a Hypervisor. If you have comments about this ...
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0answers
150 views

Firefox OS (html5,js) vs Android (java) vs IOS (objective-c) In terms of pl and tech use, how can the other is faster? [closed]

How can be one faster than the others, what happens inside their code, is it a matter of the engine they are using? (noob about the gecko, linux kernel thing, educate me) One of the limitations of ...
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0answers
86 views

What happens in a ARM based system before the OS is loaded?

What happens in a ARM based system before the OS is loaded and do they have BIOS, drivers, MBR or a different approach instead of these?
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2answers
4k views

What is Paging in memory management?

I was just reading Operating System Principles by Silberschatz et al when I came across paging in memory management.I'm slightly confused about it. It states that Physical Memory(I assume it's RAM) is ...
4
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1answer
1k views

Multi Encrypted Operating Systems with TrueCrypt

My laptop has a 250GB hard drive, and I currently use it to do a lot. I have Windows 7, Ubuntu 11.10, and BackTrack 5 on it, but I'd like to switch it up and add more security. What I aim to do is ...
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3answers
2k views

Macbook Pro Triple Boot OS X Lion, Windows 7 and Windows 8

MacBook Pro (Summer 2010 Model, Basic Model) I currently have OS X Lion and Windows 7 running side by side on my MacBook Pro. However I have a need to get Windows 8 running as well in this mix (a ...
3
votes
7answers
806 views

Why cant we use 64 bit OS on a 32 bit CPU?

Why can't a 64-bit OS run on a 32-bit CPU, but a 32-bit OS works on a 64 bit CPU?
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8answers
343 views

Should I pitch Ubuntu to virus victims?

I've noticed that on a regular basis I see facebook statuses complaining about viruses (e.g. "sorry I haven't been on in a few days... my comp got socked by a virus and I had to reinstall everything") ...
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7answers
698 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 ...
3
votes
4answers
7k views

Redirect stdout while a process is running — What is that process sending to /dev/null

I've run a command and redirected it's output via > /dev/null Now that it's been running significantly longer than I expected I want to see what it's doing. Is there a way to re-redirect the ...
3
votes
6answers
207 views

What to do with old OS install media? [closed]

I'm doing an end-of-the-year clean up and found some old OS install media - Mac OS X 10.3.5, Windows 2000, Windows XP. It seems wrong to just throw them out but they can't have a home with me anymore. ...
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4answers
12k 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, ...
3
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3answers
876 views

Looking for a free bootloader [closed]

I've heard recommendations from other people before that simply having a bootloader can make it so much easier to add and remove operating systems from my system. What is the best (preferably free) ...
3
votes
2answers
832 views

Where do operating system file reside during installation?

Whenever I install a operating system through dvd/usb drive the operating system loads the installer, extracts the files & makes the required installation. Where does the operating system files ...
3
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3answers
197 views

What is the best tool for creating an image of my OS HD? [duplicate]

Possible Duplicate: How to take an image of an hard drive partition I have finally installed all the tools that I need on my new system. Currently I use Windows 7 Pro 64bit, and installing ...
3
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1answer
6k views

Maximum number of processes in Windows XP, Vista and 7

How many processes can Windows support at the same time? This question is nothing to do with parellel processing of any sort. Processes can be running, waiting in the queue, sleeping etc,
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6answers
14k views

Is it necessary to reinstall your OS after adding more RAM?

I know my question today is subjective but I feel it requires some debate to once and for all put this myth to bed. I've heard some myths and I'm not sure if it's true or false, but basically, the ...