Technology And Computer|

Article by Jack

Computer is a sum of two parts. One is hardware and the other is software. CPU is the hardware part. It is a sum of different type’s part such as hard disk, ram, motherboard, power supply, optical drives etc. There are some extra parts like keyboard, monitor, mouse etc. Software part is the operating system of computer. Computer has different operating system like Mack, Windows, and Linux etc. Both of these parts play a prominent role in enabling the computer to do works faster and swifter. The whole thing is not work all time. Some time it needs proper computer repair and support.

Problems are common. This world is full of problems. Electronic tools, devices face different technical, internal, external problems. Computer repair these problems create a blockage to their work. Computer is a electronic device. It faces different problems. Problems of computer can be divided into two divisions. One is hardware related and the other is software related. Both of the problems are severe. Both of them affect the computer so badly. Hardware related problems consist of the problems of different parts of the computer. Hard disk may also be able to get damage by the virus.

This crushes the important data from the hard disk and often damage of it. Ram, motherboard also faces this problem. Optical drives face electric circuit problems. They don’t get sufficient electricity due to this problem and become unable to work. Monitor, power supply, mouse, keyboard also face electric problems. Software related problem is basically the problem of operating interface, virus attack etc. Operating system gets hampered due to the want of proper installation of the operating system. Virus attack is too much dangerous. It can ruin the whole computer interface. Virus is a freewill program which is so much strong to affect the computers interface easily. It can be spread from computer to computer through unsecured data sharing, unsecured synchronization and unsecured internet browsing. These problems affect computer and hampers it badly.

Electronically damage is common to all electronic devices. Damaged devices need proper repair. Repair is a process by which a damaged device’s condition is improved to normal. Damaged computer also needs proper repair. Computer repair is done by solving the problems or replacing the affected and damaged parts. This repair is done by a skillful technician who knows the problem and solve of it. Nowadays as the IT world is improving, many companies are establishing in local, national and international phases that provide

Computer support and repair service is necessary in daily life. Many problems are found in daily or gradually as a whole. The technicians are introduced with the computer problems no for one day. So we have to consult with the expert one to handle the problem wisely. Otherwise there is a chance of damage of the software and other hardware of the computer.

Article by Craig Thornburrow

The objective behind the concept of computer security actually varies quite a bit depending on the use of the computer. Computer security may include the protection of specific information from corruption or theft, for example. In general this can impose specific requirements on computers in addition to most standard system requirements. There are a number of different typical approaches that can be taken when it comes to improving computer security, including the following:

- Physically limiting the access to a computer so that computer security will not be compromised by those who are granted access to use it.

- Utilizing hardware mechanisms that can create and impose rules for specific computer programs, allowing computer security to be imposed without requiring individual programs to implement it.

- Implementing operating system or OS mechanisms that are capable of creating and imposing rules that avoid having to trust programs on the computer.

- Implementing programming strategies that allow subversion to be resisted and make computer programs more dependable.

In most cases, the computer security devices that are put into place are dependent upon the application uses the computer is created for. Different computer systems require different levels of security, as the level of privacy or protection needed is going to vary significantly. Computer systems under government control, for example, require a much higher level of security than computers used by students in a university setting. The level of required computer security, then, along with what forms of security are implemented, are going to vary significantly as well.

Implementing computer security may include creating or utilizing secure operating systems, though much of the science associated with this form of security was developed several decades ago. Security architecture is another option, and involves describing how specific security countermeasures and controls are positioned to protect the information technology. Firewalls are an example of security meant to protect computers from threats that travel via the internet or peer to peer connections. Chain of trust techniques are techniques that are used to ensure that all software on a computer is certified as authentic directly from the designers of the system. Access control is used to ensure the separation of privileges, ensuring that only specified people have the right capabilities on a computer system.

There are also cryptographic techniques which transform information into something that is meant to be indecipherable by anyone but approved persons. Information can also be secured for computer security purposes using backup files which allow important files to be protected by creating copies should they ever become corrupted or destroyed.

Essentially, the primary focus of the computer security field of information technology is to protect the integrity of computers, the data contained within them, and any information that may require restricted access. Some level of computer security is needed by anyone who owns a computer, including student computers in a university setting, computers owned and operated by the government, and even the laptop that you use to check your e-mail at night.

There are various techniques available in order to safeguard your valuable data, and disk mirroring is the most popular among them. It is the process of create an exact replica of all the data stored on your hard drive. You can easily convert your basic hard drive volumes to mirrored volumes, which replicates your data to prevent any sort of data loss situations. On Linux operating system-based computer, you can convert your linear logical hard drive volume to the mirror logical volume using ‘lvconvert’ utility. However, you should play safely while converting a Linux volume, as interruption to the process may cause hard drive failure and data loss situations. At this point of time, you need to opt for Linux data recovery solutions to get your precious data back.

The lvconvert is an inbuilt utility of Linux operating system that enables you to change a linear Linux hard drive volume to mirror logical volume. You can also use this utility to remove or add disk logs from the mirror devices. The command line utility supports various options or parameters to perform specific task. Some of the most common parameters of this utility are as given below:

-m, –mirrors Mirrors- This option specifies degree of mirror that you want to create. For instance, ‘-m 1′ converts original Linux volume to mirror logical volume with one linear volume and one copy.

–corelog- This parameter tells the tool to switch mirror from employing a persistent (disk-based) log to in-memory log. It is possible only if –mirror argument is of same degree of mirror that you are modifying.

-R, –regionsize MirrorLogRegionSize- It divides the mirror into various regions of defined size in MB (megabyte).   

-s, –snapshot- It creates the snapshot from an existing Linux volume using another volume with same origin.

-Z, –zero y/n- This option controls zeroing of first KB of information in snapshot. The snapshot is not zeroed if volume is set to read-only.

Before you convert the volume, you must backup all your significant information. If the process fails, you can not access Linux hard drive volume and stored data and need of data recovery Linux arises. Linux recovery is best possible using advanced and powerful third-party applications. Linux data recovery applications ensure safe and easy recovery in all data loss situations, with read-only conduct and rich graphical user interface.

Stellar Phoenix Linux Data Recovery software recovers lost data from lost, deleted, corrupt, or inaccessible hard drive volumes. The software supports recovery from Ext4, Ext3, Ext2, FAT32, FAT16, and FAT12 file system volumes. It works well with all major distributions of Linux operating system, including Red Hat, SUSE, Debian, Fedora, and more.

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Ever wondered what using an operating system other than Windows would be like?  Well, there are options!  Most people don’t realize they can install a completely different operating system on their computer.  They trudge along in misery using Windows XP, while they could be using a newer, faster operating system that does everything Windows does and more.

So what is this other option and how much does it cost?

Linux.  And it’s free.

Free?  Well, you say, if it’s free it probably isn’t that great.  You’d be surprised just how polished and fast it runs, even on old hardware.

So where can I get Linux?  You can download it from a number of places.  Here is a link to the Ubuntu Linux OS downloads page.  Ubuntu is one of the better Linux “flavors”.  Yes, there are a bunch of different Linux “distros” to choose from.  Some are made for specialized applications, like audio production, or for use on older hardware.  Others, like Ubuntu, are for end users looking for a nice desktop OS.

Once downloaded, you’ll need to install it onto your computer.  This is where things get tricky and most people will hit snags here.  First thing to remember is don’t do any harm to your current Windows setup.  The best bet is to install Linux onto a separate hard disk, or onto a flash drive for testing purposes.  If you aren’t too technically savvy, then your best bet is to hook into a local Linux user group, a group of Linux fanatics in your area, who’d probably love to assist you.  Do a search for a linux user group in your area here.

Once installed, where do I go for support?  Again, this is where Linux shines.  Rather than calling Microsoft support and getting some person sitting in a call center in another country reading off of a script, you can tap into the community of Linux users for help.  They are usually a very friendly bunch, willing to help you make the jump to Linux.  In the past, Linux had a reputation for users who were a little rude towards new users, but lately things are changing and the Ubuntu user forums are especially friendly to new users.  

The most important thing is don’t give up when you hit a snag.  Once you “get it”, Linux is a wonderful, powerful alternative to Windows.

Most individuals are acquainted with the operating system of Windows, that is widely used all over the planet and get the main placement in software area. What about attempting Linux? It’s also a kind of operating system, similar with Windows, but might be downloaded freely from internet.Click Here To Grab Your Copy

We strongly suggest deciding on the newest Yellow canine 6.two as the most appropriate Linux. For the reason that much more than 2000 applications are out there from Yellow canine, and a large amount of Pc features may be applied from the operating program of PS3 using the distinctive Yellow canine Linux. In fact, PS3 is additional than a device for playing films and music. With Linux on PS3, other commands may also be prepared for future use in your personal personal computer.

Processing for installing Yellow dog Linux on PS3 is not so tough, but it’s critical to remember backing up what you might have saved as irregular commands or errors may possibly result in sudden problems. And then just run step by step with instruction. Another crucial position must not be neglected for productive set up, which is to maintain the installing independent and full. When you run any command in your PS3, set up might be interrupted to quit, so you’ve got to attempt a once more from starting.Click Here To Grab Your Copy

So the install requires large caution, occasionally even when USB or cellular difficult disk doesn’t connect well with computer, it’ll cause failed installation. After install, you are able to choose to use any PS3 in accordance to require. When you need to play games, just run the prevalent PS3 operating method. In the event you want to use computer as typical, just run new yellow canine installation for PS3.

I’m certain we are able to benefit from Linux provided by Sony because it has so a large number of benefits for customers. If you are thinking about Computer region or want for a lot more comfort, Linux will make you happy.

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Linux flash drive is a basic USB drive which is made bootable for Linux. But before making the efforts one should check the operating system compatibility of their computer for USB Linux flash drive installations. To check the compatibility of the system there are many methods available on the chart but the following steps integrates to the most simple method for the cause:

1.  Install Memtest86+ to the USB. Basically it is used to check the errors on the     computer’s memory.

2.  Now reboot the computer and press F8.

3.  A window opens containing a tab naming boot. Click on boot and change the priority order of the bios to USB.

4.  Click on save and exit.

5.  Now reboot the computer. On rebooting memtest86+ screen appears then it is verified that computer is enabled in response to booting through USB.

After the verification process is done, next step approaches i.e. your USB drive to be a bootable ‘Linux Flash Drive‘. It can be done by the method explained below in order:

1. Connect the USB pen drive into the USB port of computer. Minimum memory requirement of 4 GB should be fulfilled for efficient installation of Linux.

2. Copy your data on the pc in any drive other then drive used for operating system.  .

3. Format the USB drive.

4. Navigate through Start > All programs >Accessories > right click on Command Prompt. Make it run as administrator.

5. Proceed as follows: -

DISKPART, then press enter.

And then type

LIST DISK and then press enter. It will show the number assigned to the disk.

5.  Enter the following commands in hierarchy

SELECT DISK 1:- It will select the disk 1 which is our pen drive in this case.

CLEAN: – It will clean the disk.

CREATE PARTITION PRIMARY: -It will create partitions on the memory of USB.

SELECT PARTITION 1: -It is used to select the partition 1.

ACTIVE

FORMAT FS=NTFS: – Formatting is preferred to be done by NTFS than FAT.

ASSIGN

EXIT

6. Do not close the command prompt, minimize it.

7. Insert the CD or DVD containing the windows into the ROM.

8. Pen down the ROM’s drive letter.

9. Restore the command prompt and begin the execution of     following commands in the hierarchy given:

D: CD BOOT, press on enter. D is the drive letter of ROM.

CD BOOT, press on enter and BOOTSECT.EXE/NT60 H message will be displayed. H is USB drive letter

10. Copy contents of Linux from DVD to the bootable USB.

Now your bootable USB drive is ready for use. Follow the steps in hierarchy to install Linux through USB:

1.  Plug in the USB pen drive in the corresponding port and restart the computer.

2.  Before the start of currently installed operating system, start hitting f8.

3.  A screen will appear on which there will be a tab named boot. Make a click on that and change the priority order and set it to USB on first priority.

4.  Click on save and exit.

5.  Processor will automatically detect operating system in USB drive and operating system set up screen will appear.

6.  Enter the serial number of the operating system.

7.  After installation is completed, computer will be restarted.

8.  Install the drivers and computer will be ready for use.

With the user-friendly Linux distribution Ubuntu gaining popularity at an astounding rate, you may be considering making the move from Windows to Linux. If you are, then you will have wondered how you will work and play without the applications and games you use every day in Windows.

Windows applications can be run in Linux, just not natively. You have two main options: Emulation and Virtualization. Neither are as effective as dual-booting but I will explain them here and their drawbacks.

Emulation allows you to run Windows applications through a “translation layer” which tricks the applications into thinking they are running on Windows. Although great advances have been made by the WINE Project and commercial offshoot, Cedega, many applications are still unsupported. Support for certain applications may even vary depending on your hardware configuration.

Virtualization takes running Windows applications on Linux a step further and is capable of running an entire Windows (or any other) operating system straight from your Linux desktop. With the free application VirtualBox, you can create a “virtual machine” and install any version of Windows you wish onto it.

A virtual machine is switched on and off exactly like a normal PC, except the entire operating system runs inside a window on your Linux desktop. You may then install any Windows applications you wish into the virtual machine and use them as you normally would.

Running applications natively in Windows, via a virtual machine, is far more reliable than running them through a translation layer, but virtualization has its drawbacks too.

When you run Windows in a virtual machine you are effectively running two operating systems, simultaneously, on one computer. This has obvious performance drawbacks. Although most office-type applications could be run this way, if your office insists on a particular piece of Windows-specific software, performance issues and lack of DirectX support severely hampers game applications.

The only way to successfully run all your Windows applications at their full capacity is to install Windows and Linux as dual-boot operating systems.

Dual-booting is the process of installing two operating systems side-by-side, to be run independently. By this method you will be presented with a menu listing your operating systems when you switch on your computer. this allows you to choose the OS most suitable for the tasks at hand, be it work or gaming.

I personally run Ubuntu 7.04 and Windows XP as a dual-boot system. I mostly use Ubuntu for day-to-day tasks and run Windows XP purely for gaming. This way, dual-booting grants me access to the best features of both operating systems and allows me to use my computer to its full potential.

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