Data Recovery

Data recovery is the process of salvaging data from damaged, failed, corrupted, or inaccessible secondary storage media when it cannot be accessed normally. Recovery may be required due to physical damage to the storage device or logical damage to the file system that prevents it from being mounted by the host operating system.

Computer Science and Engineering

In computer science and engineering, computer architecture is the art that specifies the relations and parts of a computer system. Computer architecture is different than the architecture of buildings, the latter is a form of visual arts while the former is part of computer sciences.

Computer Maintenance

Computers are expensive, and with all big purchases, you probably want to protect your investment. Luckily, it is not difficult to keep your computer healthy and in good working order. Maintaining a computer involves three things: keeping it physically clean, protecting it from malware, and backing up your important files.

Computer hardware

Computer hardware is the collection of physical elements that constitute a computer system. Computer hardware refers to the physical parts or components of a computer such as monitor, keyboard, Computer data storage, hard drive disk, mouse, CPU (graphic cards, sound cards, memory, motherboard and chips), etc. all of which are physical objects that you can actually touch.

Software

Computer software, or just software, is any set of machine-readable instructions (most often in the form of a computer program) that directs a computer's processor to perform specific operations.

Wednesday, July 10, 2013

HDD Data Recovery Tools - PC Inspector File Recovery

     PC Inspector File Recovery - quite simple but, most importantly, a completely free tool to recover data on hard and floppy disks. It can take advantage of everyone by downloading the program from the developer's site (www.pcinspector.de). The effectiveness of a medium - on the one hand, claimed opportunities to restore lost files, support for all file systems Windows; the other - in practice, the work program is working as it half-heartedly - restores something, and something can not see the "point-blank" . Given the fact that its developers also offer paid services to restore the lost information, it seems that the possibility of free PC Inspector File Recovery is intentionally flawed - otherwise who then there will be traded on a fee basis? ..

     In the PC Inspector File Recovery, are organized three major search engine and recover lost data. When the program starts immediately you are asked to choose one of the ways of further work (Fig. 1): Recover deleted files - restore deleted files in a standard way the OS, bypassing the recycle bin Windows, of course; Find lost data - recovery of lost information due to file system damage or formatted disks - one of the most popular tools; Find lost drive - search logical drives that are invisible to the operating system, and restore them. The latter option can be used if the logical drive containing the information deleted, that is missing from the partition table, and do not see the OS - in truth, it means in the PC Inspector File Recovery shows a very low efficiency.

(Fig. 1)

     When you choose one of the ways below to restore the program first scans your system, and then offers mext window, from which to select a logical drive that contains information of interest to recover. And if you select Find lost data or Find lost drive in the logical drive in the tab list, there are two logical drives, repeating each other (Fig. 2), which sometimes can be confusing. The first is the list of logical drives for each physical disk «on fixed disk ...», and then a list of logical drives, indicated by letter - just as they are seen by Windows. In general, the first and second lists often repeat each other, especially if the system has only one disk. If your computer has more HDD's, then the order of the sections for the individual drives in Windows, the list of symbols and logical drives will already be different - depending on the way in which, say, the sections were selected active in partitioning hard drives. If the hard disk has lost logical drives, then they can only be displayed in the list shown to the physical device («on fixed disk ...»). Information on the amount of detected hard disks and partitions can be seen in the tab Physical drive.

(Fig. 2)

     If the method of recovery was given, and a list of the logical drives in front of you, then further reduced to the user the choice to drive from one of the lists, which should contain the data of interest to him. When you double-click on it with your mouse starts scanning the selected logical drive, the time is determined by the size of the disk and the power of the computer - the process usually takes 10 to 30 minutes. After scanning window pops PC Inspector File Recovery, which displays the information available for recovery. If was used the mode Recover deleted files, then the data will be found in the Deleted folder in the PC Inspector File Recovery. When restoring by modes Find lost data or Find lost drive found to restore the data will be displayed in folders or Lost Root respectively. Usually the names of the directories in the root of the restored disk will not be saved and replaced with the name of the program such as cluster ... (Fig. 3), and the names of the subdirectories and files, usually retain their original names.

(Fig. 3)

     To save the files and directories you are interested, is enough to click on the right mouse button on a name in the right window of PC Inspector File Recovery, and then, after selecting the Save to, in the context menu the location of the object being restored (Fig. 4). There is no guarantee that, after going through all the steps and even maintain the appearance of the file on disk, it will then open correctly or work. It is also necessary to note that often the search and recovery of information in the root folder of Root, Deleted, Lost, Windows PC Inspector File Recovery does not appear pre-existing files with the name of the type cluster ... with unrealistic size, extension and creation dates.

HDD Data Recovery Tools (List of Software)

     Usually, all the operational information on any user's computer is stored on the hard drives. By themselves, the data on the hard disk are not protected from the action of any other programs or from accidental or deliberate user commands or by hardware failures that can lead to destructive consequences. As a result, valuable information may be lost due to random failures of programs, actions of viruses, user errors, or deliberate destruction by an attacker. What time does the estimated lost data - each defines for himself. This can often exceed the cost of the entire computer's worth and hard work.

     What if somehow you lost valuable files from HDD, or its logical drives all formatted or even deleted? Many believe that the data is lost forever. But it is not. Consider the most typical cases.

     How does deleting a file in the DOS or Windows operating systems using standard (passing, of course, shopping cart)? Although remote file and disappears from sight, but in fact the data on it is not immediately destroyed. Let's say you are removing, say, a file of several hundred megabytes - and it happens almost instantaneously, which could not possibly have happened if the operating system will be overwritten by all the clusters of the file. The operating system is simply renames the deleted file, adding a special label in the beginning of the name. The file is no longer visible - it is marked as deleted, but the information remains in the same place on your hard disk.

     An important addition: although the deleted file remains in the same place on the hard drive, but now it is the space available for recording new data on the first request, without any reservations. That is, if the record of this deleted file has occurred, previous data is lost forever. If nothing has been recorded, the deleted file is still possible to recover by using special software.

     Looks similar situation when formatting a drive. Simple formatting re-creates the file allocation table, which is now stated that the entire surface of the disk is empty. However, the previously existing data will not be erased intentionally and remain in their places. If in their place after formatting were not recorded new data, then disappeared in the process of creating a new format files can still be recovered using special software. The same happens when you delete and create logical partitions - create a new partition table, the new drives are considered empty, but most of the old information remains on their own place, but now it can not be accessed using standard OS. The exception is the so-called low-level format: while the entire surface of the hard drive is reset, data disappears forever.

     As can be seen, re-entry in the event of data loss is much more dangerous than even formatting the disk. Therefore, if it became clear that the data is still lost, in any case you can not write anything on the same disc, or better yet turn it off as long as no special tools will be developed for search and recovery. Particularly vulnerable in this is the system disk C. The operating system is constantly making official records on the system drive, randomly selecting the available recording space and erasing these deleted files. Important information in any case should not be stored on the C drive, while Microsoft has for some reason the default folder "My Documents" is always on the disc.

     If trouble came - you lost files, the logical drive format is not defined, a disk reformat, or deleted logical partitions - no need to panic. Chances are that valuable information can still recover. As mentioned above, for the complete destruction of the data would have to be systematically screw up the entire surface of the hard drive. Usually viruses are faster and produce only superficial damage. In the case of hardware or software failures, if the hard drive is physically operational, often is damaged FAT, but clusters remains intact.

     The data on the hard drive can be recovered using special tools that scan the surface, defining the logical structure and format partitions, seek out and retrieve lost files. Of course, the absolute guarantee can not be here, but in most cases in a timely and correct approach, it is possible to restore much of the lost information. Recovery program is always best to start with a different physical disk, and in any case does not make any entries on the disk with the lost information.

Here is a list of Tools for Data Recovery, click on one of them to read more about:

1. PC Inspector File Recovery
2. Ontrack Easy Recovery
3.Power Quest Lost & Found

How can you recover deleted files - quickly and free

          Deleting files by mistake or simply lost data from various causes are not so pleasant things that can happen to anyone. When such accidents occur, you must find a way to recover lost files. This process depends on how the data were lost. For accidental deletion, the solution is to use a file recovery program.

          The good news is that there are many programs, some for money, others free to recover files. Their effectiveness varies, some are better, some worse. For example, I stopped at a program that has two important advantages, it's free and very easy to use. It's called Recuva and can be downloaded here.

Deleting - recovering principle

          The bad news is that recovering deleted files is only possible under certain conditions. For those who do not know, I'll explain how simple it is possible to recover files. When you delete a file, it is not actually deleted but only "out of circulation". That is quite simply to be recovered.


          The main condition is to try to recover files before writing other data on that partition or hard drive. The more new files appear, the chances of recovery are small, because they will be copied over the erased.


Recuva - Free, simple and efficient

          Recuva can be used either through a wizard or without it, in the main window. If you prefer wizard, you must tick three steps: to specify the file type (image, document, etc.), to mention was the director before being deleted (optional) and choose scan mode. By default, calls to normal scan mode, it has the advantage of being very fast. Alternatively, you can choose Deep Scan mode, more thorough and lasting.

           I tested a few deleted files, intentional used Windows Explorer Shift + Delete to not be stored in the Recycle Bin. All were recovered without any problem, it was small files, recently deleted.

          Experience with such programs may differ. No one guarantees that, for example Recuva will be as effective on any computer. But Recuva has the advantage that it is free and very simple to use.

Saturday, July 6, 2013

What you need to know about motherboards

     No self-respecting computer user will buy a PC already configured often already obsolete components. But we have to admit: having a configuration can transform me into an adventure in the jungle IT. However, the choice of motherboard is one of the starting points.
     Most buyers are turning to computers preconfigured systems, taking into account those basic specs that give an overall PC performance. But if you want to put together a customized system with carefully chosen components, an important step is choosing the motherboard. Because this will condition subsequent configuration of the entire system. Although at first glance it seems a complicated operation that requires a lot of technical knowledge, but do not lose your temper, i will help you to understand.

FORMATS

     Overcoming criterion called producer, initially you should inquire format motherboard. But in the meantime this has been stabilized. Since its introduction in 1995 by Intel ATX format, surely now most home computers have preferred this option to determine not only the form of housing, but also the management of electricity. So most likely, you will opt for the classic ATX motherboard. But overall your culture, you should know that there are smaller versions MicroATX or Mini-ITX. They are consuming less power and therefore do not need to manage heat. A newer generation are BTX formats. Developed in 2004, emerged as a result of consuming power of new technologies, thereby generating increasingly more heat.

PLATFORM, PROCESSOR, SOCKET

     Once past the gauntlet required size, we need to talk about the platform. Even here things are very complicated. How poor are likely to opt for the American Apple, you only have two options: Intel or AMD. It means if Intel recently as the steep prices compared to AMD, now, the two largest manufacturers of chips can be difficult to shoot a strictly by these two criteria. What came first: the chicken or the egg? a similar dilemma we are and we reach this point: pick first processor to know what the hardware platform we have to focus further or to choose first and then board a compatible processor? Most would vote for the first option, but there are arguments for the second. Anyway, it's better to target those boards that support a larger range of processors, in view of a possible upgrade. CPU choice is made depending on what you intend to do with your computer just setting. And here you have in mind especially the CPU speed. Only then will you turn to a corresponding socket. But this is already another story ...

CHIPSET

     Perhaps the most delicate point of our discussion is the so-called chipset, considered the heart of the motherboard. It coordinates the entire system through two distinct parts: the Northbridge and Southbridge. The first is related to the processor data bus and RAM modules, while the second will connect the other components (hard drive, optical drives CD / DVD, video and sound cards, any components connected via PCI slots and other components connected via USB, serial, PS / 2). The two are separated physically, but communicate over a high-speed bus.
     Opting for a chipset manufacturer or another is done as needed (performance is not justified if excessive use resource intensive applications) and the maker of processors for which you chose. Thus, AMD will have to choose a product NVidia chipset, VIA, SIS, AMD or ALI, and for the Intel chipsets Intel, SIS, or VIA AU.
     Chipsets are implemented software for a specific set of drivers. Do not forget to keep the CD with every motherboard and reinstall the system to immediately install these drivers. Also on the CD in question will receive several programs, among which the most important is the CPU heat Monitoring of rotational speed of the cooler.

ADDITIONAL FEATURES

     Also, the chipset is also responsible for other features like sound card, video or network card, in which case you are exempt from additional expenses to be purchased separately. However, most of the new generation motherboards (especially the low end) offer this feature. It's good to know that integrated motherboards, especially graphics will feast greedy of system RAM. Besides more RAM you will need to have, never will warn that there will be some integrated cards performance. So if you want to play some newer games, opt for an independent video card, more performance than integrated motherboard.
     As many technologies implemented on new generations of motherboards, we can talk more. Whether it is the cooling or power consumption reduction, not to mention the chipset, the fact is that manufacturers are constantly moving.

MARKET SEGMENT

     And if all this continues to be exposed to sound like gibberish, we invite you to apply simple rule of three. That is to consider the three market segments: Low end, Mainstream and High end.
Low end is where the emphasis is on price. Course, and facilities will be minimal. However, you get a computer that can handle it acceptable to all household needs. If new games, however, you may experience problems.
     Mainstream is the next step to try to keep an acceptable ratio quality / price. This segment addresses the future visionaries who want to find them ready.
     The last step definitely not interested. includes components not accept any compromise in terms of quality and prices are as.
     This applies to all electronic devices tiebreaker, but if the choice motherboards simplify considerably. A home user to IT-istic common interests will be most of the time, excited by a low end card that adds possibly a graphics card to be able to also enjoy the latest games.
     In what follows, we will build on places or banks (connectors, slots) available on a motherboard.  Settlement, their number and type vary depending on motherboard model, but basically, you will not face other connectors.

Thunderbolt, a cable for all devices

     PC users have dreamed of such a connection for years: fewer cables and computer peripherals to a high speed data transfer. These goals become reality with Thunderbolt: instead that users struggle with HDMI cables, VGA, DisplayPort, DVI, eSATA USB or FireWire, they may use one type of cable, Thunderbolt, for any of the categories of devices. And by the way, Thunderbolt achieve much higher transfer speeds than USB 3.0.

Thunderbolt arrives on Windows

     Thunderbolt is a new technology that is supported yet only a handful of devices, Apple was the first computer maker to integrate it (turbo)-connection in its models. Starting with 2012, Thunderbolt is aviable and on PC's. Large manufacturers such as Asus and Acer, had incorporate technology in ultrabooks.
Intel first introduced the technology in 2009, under the original name of Light Peak. The idea was that it acts as a universal interface, linking computers monitors, peripherals or other devices for entertainment. As its name suggests, it was planned to be based on an optical system for transmitting information, but reasons of expense, it was introduced in early 2011 as the current Thunderbolt, which uses electrical transmission. First-generation Thunderbolt uses copper wires. One of the advantages we have is that the Thunderbolt optic version is removed from the calculations, the contrary is an Intel Expected in specificafiile no explicit protocol for transmission type layer electrically and / or optically. The technology works irrespective of who provides the connection layer. Thus, Intel announced for next year generated a second Thunderbolt, which will have an optical data transmission system (that will use optical cables). All controllers that are integrated into devices that are already on the market should be able to be adapted to the new cable with minimum effort. The advantage of the new generation will be that, instead of cable 3 meter cable can be used 10 meters.

Data flows divided flexibly

     Another advantage of Thunderbolt technology, which uses parallel data channels operating in both directions (see chart below). These two duplex channels that are able to provide total by 10 Gb / s for each of the directions of transmission. A single cable can connect up to six devices, but they will have to divide between them all this bandwidth. The first benchmarks indicate that the maximum achieved in practice is not yet reached. For example, a RAID storage device from Promise was able to achieve 825 MB / s At first glance, it seems disappointing, considering that Thunderbolt's limit is 1250 MB / s (= 1.25 GB / s = 10 Gb / s). But here are some other limiting factors such as RAID controller.
Thunderbolt has great potential. In 2015, Intel wants to get with it at 50 Gb / s per channel for 2019 to reach 100 Gb / s.
     Glancing Thunderbolt protocol, we see that it serves two existing standards - PCI Express and DisplayPort (instead of the latter may be others, but we DisplayPort implementation used by Apple). Thunderbolt takes these two protocols and encapsulates them in his own Metaprotocol. For peripheral and host computer, they are visible as before, continuing to use them as before. Stack of Thunderbolt takes care of traffic and delivering data to the appropriate destination. Besides the "routing" of traffic, Thunderbolt supports other features such as hot-plugging. Thunderbolt's heart is the transport layer protocol: for example here to ensure synchronization devices. Another element that will benefit Thunderbolt technology is powered directly through the Thunderbolt cable, so peripherals (even the low consumption) need not to have mains power. Intel introduced the Thunderbolt specifications possibility that the cables of this type are suportafi up to 10W.

Conveniently, with new chips

     Excellent impression about the Thunderbolt is slightly overshadowed by the connection system. Although in terms of mechanical and electrical connector supports one miniDP the cable ends contains two transceivers that significantly increase production costs. Apple sells a Thunderbolt cable 2 meters with about 50 euros. Also, first-generation Thunderbolt controllers are expensive. But Intel is working on this issue and, in addition to high-end controllers next generation (which is known as Cactus Ridge), the company announced at IDF and low end controllers, cheap, such as L2210. This would introduce computer technology into the space available.

Optimize Computer Performance for Games

     It is no secret that most games are resource intensive. Granted, there are apps at least as greedy, but they are usually addressed to professionals equipped accordingly.
     So, whether we prepare to launch one of the latest games or camera editor, we need full computing power of the system provided. For any computer strain, while sometimes unknown, small applications or system processes that feast, in the background of its resources, resources that can improve the gaming experience sensitivity or speed of an application design acts or editing media.
     The app Game Booster is the assistance you need in such cases. Pressing a button will create the optimal environment to launch a resource-intensive applications by stopping temporary utility services which disappears in time. Another feature offered is the ability to defragment the application in question. A generous hard drive removes the need to defragment partitions, but such an application or game comes on one or more DVDs. Hence the much higher chances of fragmentation of files in their case that feels fragmented in processing speed tasks. If you are a gamer or flirted with large applications, it's time to call the Game Booster. Then everything comes about by itself ...
Free Download:http://ru.iobit.com/gamebooster/
1. The interface is simplistic and very friendly. Do not forget that immediately after installation, follow the link Languages ​​to switch on support in Romanian.
2. Then, if you do not want to complicate, click the center button, Activate Game Mode. Thus, all services deemed unnecessary during the game will be stopped temporarily.
3. However, there are processes that serve applications such as antivirus or messenger indicated to remain in service. So click the link configuration.
4. From the list that appears in the new window, check only those services which can be considered as closed. Then confirm with OK. After completing the game or work with the application in question, click on the same central button to return to normal work.
5. The second step is to defrag the game or application. Game Defrag Enable register.
6. Now click the link Go back to select Another game / program and select the directory where you installed the program. Analysis process will begin automatically. If fragmentation report, it is clear that you can defragment the partition beforehand.
7. Press Defrag to recreate a single space to the applications.