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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4
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2answers
252 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
votes
1answer
1k 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
votes
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 ...
4
votes
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?
4
votes
2answers
674 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?
4
votes
2answers
127 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 ...
4
votes
0answers
166 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 ...
4
votes
0answers
90 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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votes
2answers
5k 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
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 ...
4
votes
2answers
10k views

How to prevent mouse settings from resetting after reboot?

Every time I reboot my machine the Enhance pointer precision setting for my mouse gets resets to "unchecked". I used to have similar issues in the past (with Logitech mice) but I don't remember how I ...
4
votes
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 ...
3
votes
6answers
1k 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?
3
votes
8answers
347 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") ...
3
votes
4answers
9k 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
7answers
751 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
6answers
209 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. ...
3
votes
3answers
886 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
1k 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
votes
3answers
200 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
votes
3answers
12k views

What are the benefits of Virtual Memory?

So I've been reading up on virtual memory and it all seems pretty straight-forward and practical. However, I'm choking on one major concept. If virtual memory is stored in main memory, then why even ...
3
votes
2answers
3k views

quickest way to try/install redmine?

I want to try the trunk version of Redmine to find out if it suits my needs Could somebody help me/point me what OS (win or linux+what distro) is the best to use in terms of easy and quick install of ...
3
votes
3answers
674 views

Best way to burn OS to Disc on Mac?

How to burn an OS like Windows 7 onto a DVD for Mac? What software should be used? Is Toast good enough and if so, how do I make the DVD bootable?
3
votes
4answers
2k views

Install two copies of Mac OS X on a Hard Drive

How to install two copies of Mac OS X on a Hard Drive?
3
votes
4answers
783 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?
3
votes
4answers
1k views

is it possible to toggle among different OS in a multi-boot PC without restart?

My notebook installed Windows XP and Ubuntu. Every time to toggle, I need to hibernate one OS (to keep current working things) and restart to the other. Is it possible to keep both OS "live" and ...
3
votes
5answers
835 views

How to determine if a 32- or 64-bit OS is suitable for a laptop based on RAM size [duplicate]

Possible Duplicate: Windows 7: Should I Install 64-bit or 32-bit Version? (x64 vs x86) I have heard that if a laptop has more than 2 GBs of RAM (my laptop has 3 GBs of RAM), then one must ...
3
votes
1answer
133 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
2answers
267 views

64 bit Operating System?

What we are getting if someone says "my machine is 64-bit computer" . What is the difference between 64-bit computer (I mean the CPU architecture) and operating system (Windows 64-bit OS). Please ...
3
votes
2answers
7k views

Linux: Kill process on specific port

How to kill a process if its port is known? For example if a process is running at port 12345 then how it can be terminated in linux/ubuntu.
3
votes
1answer
166 views

Problems with uninstallation of windows 8

I installed windows 8's developer preview version dual boot with win 7 ultimate. I put my win 8's partition to 11 GB (almost), but now when I try to uninstall the win 8 it dont allow me to uninstall ...
3
votes
2answers
2k views

Is there a high-performance local area “file sharing” protocol?

It seems to me that most network "file sharing" protocols are one or more of old, slow, and insecure. The most used protocols seem to be SMB, NFS, and WebDAV. I'm sitting here, looking at iTunes ...
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
3answers
114 views

Different operating system for each user on one machine

I've come across this rare issue, I have a friend that uses some software that is particularly slow in Windows 7, the best compatibility is in Windows XP, I told him to make a partition and have both ...
3
votes
4answers
10k views

Why do computers get slower over time? [duplicate]

Possible Duplicate: Why does hardware get slower with time? You probably know this: A newly bought computer is snappy and responsive and just really fast. Then you use it for a couple of ...
3
votes
3answers
6k views

Is having more CPU cores a better thing for running a web server?

I was reading about how User threads are mapped to kernel threads on Wikipedia. From this article I understand that FreeBSD uses the 1:1 (Kernel-level threading). So each User thread created by the ...
3
votes
2answers
2k 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 ...
3
votes
1answer
1k views

How to create bootable USB flash drive with more than one installation O.S.? [duplicate]

Possible Duplicate: How to make a multiboot USB key? What I want to do is to get Windows 7 installation (both x64 + x86) XP installation SP3 HBCD All together in 1 USB flash drive. Is ...
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 ...
3
votes
3answers
11k views

New laptop with just DOS in it

I will be recieving a new laptop with just DOS in it and I have to install the OS myself, so iw as wondering is installing a new OS in this laptop is same as formatting any old laptop/pc? Edit: just ...
3
votes
2answers
473 views

Windows 7 CPU usage after update

After windows 7 updated and restarted it shows 98-100% CPU usage in task manager. But, it doesn't show any heavy process or thread using it. Are they hidden processes that the task manager doesn't ...
3
votes
2answers
99 views

Can a switch differentiate between operating systems?

My employer has a open WiFi network, it appears that it can tell the difference between Windows XP, and Linux. I was wondering if this was even possible, and if not is it more likely they they are ...
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 ...
3
votes
2answers
61 views

Is there a performance difference when installing an OS on the last partition?

I have a laptop with Windows installed on a GPT hard drive. I want to have another partition to store data and yet another to install Linux Mint (or Ubuntu, still deciding). Should I install it on the ...
3
votes
4answers
142 views

Is Direct X available for Operating Systems other than Windows?

Is Direct X a software exclusively for Windows? If so which software does the work of Direct X in other OS?
3
votes
2answers
188 views

Does an operating system itself take up resources (aside from the space it is installed on)?

I just finished a course on operating systems and the definition of an operating system is still unclear to me. Does any operating system itself take up resources such as CPU and memory? For example ...
3
votes
1answer
6k views

Installing Android on VMware Workstation?

As you know , we can install different operating systems into Virtual Machines running under VMware Workstation. Is it possible to install Android(4) on VMware-Workstation 8?
3
votes
1answer
1k views

After typing 'info bash', how do I exit the documentation?

I tried to use the terminal. I typed "help" and was happy to see a list of commands appear on the screen, among which "use 'info bash' to find out more about the shell in general". So I typed 'info ...
3
votes
2answers
974 views

Backtrack 4 as a primary development OS

I want to use Backtrack 4 as my primary OS on a netbook. However since I'm an app developer, I need tools such as MonoDevelop, Git, VM, etc. etc. I know that I can install everything I need on an ...
3
votes
4answers
932 views

What percentage of computers today are *nix based? [closed]

Do you know some source that has statistics/estimations about this? Any sound guesses?