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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1answer
2k views

Tools to view/edit user space memory of running processes?

Are there any tools to view/edit user space memory of running processes on Linux? It would be a great learning tool.
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2answers
2k views

Platform vs operating system

I have been using the term platform and operating system to mean the same until now. For example: Windows and MAC are two platforms or operating systems. When it comes to different versions of windows ...
4
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1answer
93 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 ...
4
votes
1answer
238 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 ...
4
votes
1answer
584 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
1answer
2k views

If “top” indicates CPU is spending 10% on %wa (iowait), does that mean the CPU is idle?

I am referring to the Linux top command. If it indicates 10.4% was spent on wa, does that mean 10.4% CPU was available for other processes? top - 09:40:45 up 178 days, 34 min, 1 user, load ...
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votes
2answers
112 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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votes
2answers
660 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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0answers
114 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
2answers
193 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
911 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 ...
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
3answers
6k views

How to install OpenWRT on an x86 computer with SATA hard drive

I've tried to install OpenWRT Backfire 10.03.1-rc6 x86_generic combined ext2 on my x86 PC, but the boot process stops while "waiting for root device /dev/sda2". Forums have advised me to build a ...
3
votes
7answers
647 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
333 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
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7answers
654 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
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. ...
3
votes
3answers
9k views

Scheduling algorithm used in Windows 7

What is the scheduling algorithm used in Windows 7?
3
votes
3answers
864 views

Looking for a free bootloader

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
583 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
186 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
1answer
5k 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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votes
3answers
5k 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, ...
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votes
3answers
658 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
6answers
9k 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 ...
3
votes
2answers
6k 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
3answers
253 views

What is the Linux equivalent of FAT and how does it relate to block devices?

New to Linux and am having a tough time understanding some basic OS concepts. What is the Linux version of FAT, and how does it relate to these so-called "blocks" or block devices?
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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
518 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
497 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
4answers
996 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 ...
3
votes
1answer
129 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
242 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
1answer
162 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
1k 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
3answers
106 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
1answer
3k 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 ...
3
votes
1answer
914 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
1k 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
2answers
391 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
98 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
3answers
3k views

What does it really mean when CPU usage is 0% in the Windows Task Manager?

I don't know if there's any instruction that could make the CPU idle. And I also notice that there's a System Idle Process that use 99% of the CPU when the CPU usage is shown to be 0%. What is this ...
3
votes
1answer
219 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
4answers
85 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
138 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
106 views

What are the differences between “enterprise” and “home” Linux distributions?

Simply as the title says, what are the main differences between these two kind of distributions? Being Linux basically suited to be tailored to each own preferences and fully customizable in every ...
3
votes
2answers
11k 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 ...
3
votes
4answers
55k views

How to Extend primary partition(/dev/sda1) in linux?

Im having a problem, my primary partition is running out of space. Due to this, I can't access linux machine remotely (through vncserver). I have another drive (/dev/sdb) having much more free space. ...
3
votes
2answers
951 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
665 views

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

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