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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60
votes
3answers
89k views

How can I reinstall Windows 7 if I lost my installation DVD? [duplicate]

Possible Duplicate: Where do I download Windows 7 (legally from Microsoft)? I have lost my Windows 7 installation DVD, but I do have the license key. How can I get a Windows 7 DVD? Can I ...
1
vote
2answers
3k views

What is RPC and why is it so important?

From the beginning, I've heard that you never, ever disable the Remote Procedure Call service in Windows. This leads to horrible things that used to be hard to overturn (I believe that it's no longer ...
0
votes
0answers
12 views

Hard disk not found with error loading operating system

I have a Lenovo Y50-70 since 5/6 months (so it's a new one!). I had an important error with Windows OS and mainly with my hard disk. Before asking my question on SU, I did several researches (as ...
2
votes
2answers
184 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
1answer
5k 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
votes
0answers
36 views

Can’t boot OS as hard disk drive not visible in BIOS

My computer (Asus laptop) suddenly stopped booting up one day. So I used a Fedora live CD to back up all my files externally then used the same live CD to install Fedora while I figure out where I put ...
-2
votes
0answers
22 views

Is BIOS a firmware of which device? [closed]

I learned that "Firmware is the software that runs on the device" and BIOS is firmware. Then of which device is BIOS is firmware? Is BIOS running in CPU or on the device of which BIOS is ...
1
vote
1answer
39 views

Building a small home server [closed]

Good day everyone. I am not sure if this was the right forum on stackexchange, but I found it most applicable. I have quite an old PC (currently running Untangle, but not needed anymore), with ...
2
votes
1answer
589 views

How to perform a low level disk copy? (Migrate Windows system from one disk to the other)

Currently, I have a SSD on my computer, I install my OS Windows 7 on it. Unfortunately, it's capability is too small (32GB), it gets full easily, I need to clean up files periodically, it's quite ...
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 ...
-1
votes
1answer
18 views

Can’t format Linux partition after reinstalling Windows

I was using 2 OSs, Windows 7—installed on C:—and Ubuntu—on a 60 GB partition next to G:. Now, I changed the processor and motherboard and reinstalled Windows. Ubuntu was left untouched. When I start ...
-1
votes
1answer
19 views

Ho do I build and use a portable Windows OS environment for developers?

I am a developer and use several applications, tools and programs on my Windows 8.1 machine. I work frequently from home in addition to the office. Currently, I use one souped-up laptop that has all ...
0
votes
1answer
150 views

Cannot install Kali linux

I am trying to install kali linux. My laptop is 64bit. I am trying to use bootable usb drive. It is giving me this error saying "An installation step failed, You can run the failing item again from ...
0
votes
2answers
165 views

Windows 8.1 shows activated in computer property, but i encounter message saying 'windows will expire soon'

I have got my Lenovo Z50-70 about one month ago with Windows 8.1 Installed. It keeps flashing the message 'Your Windows will expire soon' But when I check activation status it shows me its ...
0
votes
4answers
49 views

Uninstalling windows 8 and then re installing it, how does it work?

So my PC has an activated version of Windows 8.1 and i was thinking of changing my OS to Zorin to see if i like it, if i decide i don't like it is there anyway i can get back Windows 8.1, if so how ...
0
votes
1answer
45 views

How the desktop identify the correct time when power on the system

I bit confuse with how the desktop identify correct time when i power on again, i was surprised how it happen? is there anything run even when i power off the system? Let say in my time it was 7.30 ...
-1
votes
3answers
53 views

Why am I unable to use my Windows 8 after installing Windows 7 in a separate partition?

Previously I had dual boot I.e, Windows 8 in G:drive and Windows 7 in C:drive. Since I had slow performance in Windows 7 I had to remove and re-install Windows 7 again in C:drive. so while starting ...
1
vote
1answer
55 views

What is “NT AUTHORITY” and “NT SERVICE”

I can find many info on what is "NT AUTHORITY" slash "something". Same for "NT SERVICE". But not for the part before the slash. I run into them from time to time in my work. I might receive ...
3
votes
4answers
6k 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 ...
0
votes
1answer
632 views

Reclaiming an old school Chromebook

In the middle school I go to, we use chromebooks. They are "managed", so we cannot change or do anything to the laptop we are not allowed to do. One of my friends recently left the school. Since he ...
0
votes
1answer
5k views

window 7 cannot stop looping for failure configuring windows updates reverting changes

Anyone have this kind of problem before? I shut down my computer and I restart it. I can just see my screen show me about this line" failure configuring windows updates revert changes." After that, ...
3
votes
2answers
666 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. ...
-3
votes
1answer
56 views

What's the best Free OS available right now or soon will be? [closed]

My only familiarity is with win7. I'm looking for best new os system. That is light and fast, and can do everything. I have heard about ubuntu. But don't know if it's the best out there. So i want ...
0
votes
2answers
53 views

Computer claims operating system not found but the hard disk drive is fully operational

I’ve got this Dell XPS 15z laptop laying around with a broken hard driving. I swapped the hard disk drive (same format) of another laptop for an SSD. So I thought I could try to make it work again by ...
0
votes
1answer
30 views

Formatted PC wont boot from CD

I cleaned the HDD of an old PC with Hiren Boot CD to make a DIY server and it worked fine. I now have very clean hard drive. The problem is when I tried to put an iso of ubuntu server onto the machine ...
4
votes
1answer
30 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 ...
0
votes
1answer
27 views

Cant load any os installation on laptop

So I have downloaded Kali operating system and checked on my main computer (not laptop) if I burned it correctly to the DVD. The disk was running fine and the os installation showed up. However, when ...
0
votes
0answers
19 views

Install Windows 7, keeping pre-installed Windows 8 (dual boot)?

I have a Samsung notebook with pre-installed Windows 8: how can I install Windows 7 in dual boot? I have read there might be some problems, since Windows 8 runs on GPT partitions, and Windows 7 might ...
1
vote
3answers
131 views

Do USB keyboards have hardware auto-repeat? (like PS/2 keyboards)

Or is auto-repeat done in software on the computer that the keyboard is connected to?
0
votes
0answers
26 views

Edubuntu stuck on installation

I've had this problem using multiple discs on multiple drives on this one computer. I'm trying to install edubuntu 12.04 on an old desktop. It boots to the disk, I select english and then "install ...
12
votes
4answers
263 views

Which multi-user operating systems allow a user to see the current command line of other users?

I was reading the manpage of unzip, and ran into the following -P password use password to decrypt encrypted zipfile entries (if any). THIS IS INSECURE! Many multi-user operating ...
0
votes
0answers
18 views

Why do UIDs start at 0 but PIDs start at 1 in Unix?

During a discussion of Unix operating system concepts, the question was raised, and no one really seemed to be sure. It seems against "the Unix Way" for things to be inconsistent that way, yet it ...
0
votes
0answers
22 views

How to transfer OS from failing hard disk to new external drive?

I have an old Vista Laptop whose hard disk is failing. For various reasons I must have the same exact system back again. I copied the entire OS on the C drive over to a new external drive and made it ...
2
votes
1answer
39 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 ...
0
votes
0answers
11 views

how to enable pci hotplug support in ubuntu 13.04

Kindly help. I have a pci-based wifi adapter which is not getting detected when i plugged it into the laptop. OS: Ubuntu 13.04 Kernel version: 3.8.0-19-generic
0
votes
1answer
11 views

Time Machiine Volumes owned by root

I recently set up time machine to back up to two external USB drives. backups are proceeding fine, but the drives are owned by root and I can't access them via "enter time machine" or via normal ...
1
vote
2answers
734 views

Is there and easy way to clone my windows 8 os from ssd to a larger ssd

I know similar questions have been asked but, I have windows 8 preview release installed on an SSD (OCZ agility 3 120GB) I want to just move all my stuff including OS to a larger SSD (OCZ vertex 4 ...
0
votes
3answers
299 views

Sync Firefox between OSes like you never leave it

I have two OSes: Windows and Linux, both of them install Firefox 29. I would like them to have everything synced like they are two become one. Whenever it opens, it will open exactly to when it ...
0
votes
1answer
434 views

Booting from USB with UEFI bios to install Windows 8.1

I have a Lenovo 11e Yoga laptop. I have installed a new, blank SSD in the system and now I want to reinstall Windows 8.1 (which is what the laptop came with). I created a bootable USB stick using ...
1
vote
3answers
5k views

Sony Vaio BIOS Setup not Working?

I have a Sony Vaio E-series (VPCEA22EA) laptop. Yesterday, while I was starting up my laptop as usual, it showed the password error saying: Password you entered is incorrect I forcefully shut it ...
28
votes
5answers
26k views

Why can't a 64 bit OS run a 16 bit application?

Why is it that a 32 bit OS which is installed on a 64 bit CPU can run old DOS 16 bit applications, but if you install a 64 bit OS it can't run those applications directly and need some sort of ...
0
votes
1answer
29 views

Prompting for sudo password in a setuid root binary

I have a setuid root binary, with_sudo.bin, with the following source code: /* with_sudo.c */ #include <stdio.h> #include <sys/types.h> #include <unistd.h> #include <stdlib.h> ...
1
vote
1answer
39 views

AMD processor families and models

I want to use hardware performance monitors on my AMD Opteron 6376 processor. Unfortunately, AMD has many manuals and I can't figure out which one I need from this (partial) list: ...
6
votes
1answer
105 views

How do non-realtime OSes capture audio without dropouts when sample rates are so high?

If I plug a line or USB microphone into my PC, I can record audio at 44.1kHz. That's one sample of audio about every 23 microseconds. The audio wave must be sampled and played back precisely or it ...
44
votes
11answers
9k views

What is the relationship between Unix, Linux, Ubuntu, Debian and Android?

What is the relationship between Unix, Linux, Ubuntu, and Debian? I suspect they are all Operating Systems that are based upon one another - similar to how Windows is based on DOS. Is my suspicion ...
1
vote
1answer
47 views

After formatting External Harddrive, Why do hidden OS folders $RECYCLE.BIN, System Volume Information get created

My antivirus ESET Nod 32 was flagging up a virus found in my C:/$Recycle.bin folder, after reinstalling fresh OS I decided to store some things on an external Harddrive and dumped to another PC. My ...
0
votes
1answer
29 views

Why can't I install any OS on samsung

I have laptop call it SAMSUNG OS: WINDOWS 8.1 UNILINGUE 6 BITS (6.3 VERSION 9600) Model: 300E5E/300E4E/300E5V/300E4V BIOS: P02RBE i'm trying to install any OS on it but no luck even i use usb ...
0
votes
1answer
33 views

Can't boot to the original windows 8.1

After purchasing an SSD, I decided to install Windows 8.1 on it. I originally had Windows 8.1 on my Western Digital Hard drive. But now, I cannot boot to it and there is no option to select an ...
6
votes
6answers
11k views

“This CPU is not compatible with 64-bit mode.” - Installing Windows 7 Ultimate 64-bit on a netbook with a 64-bit Intel Atom CPU

I tried installing Windows 7 Ultimate SP 1, 64-bit on a netbook (Lenovo IdeaPad S110), which has the Intel Atom N2800 (1.86 GHz) as its processor, but I get the following error message when the ...
0
votes
0answers
20 views

Not showing bootmenu

I had both Ubuntu 12.04 and windows 7 on my Hp desktop and it was working properly.Now the problem is when I tried to boot the system it is not going to the boot menu instead it continuously blinks ...