The hard drive is also called hard disk drive (HDD) or just simply hard disk. It is a device that is used to store large amounts of data in a computer system. It retains the data even the computer is powered off. Generally, the data in hard drive is not easy to lose unless you delete it, format the hard disk or hard drive spoilt. Of course, the data in hard drive may become inaccessible if virus attack your system or hard drive is mechanical damaged. So be careful enough while working with hard drive. However, even if the data were lost, you still have ways to recover data from hard drive.
There are many reasons can cause losing data in hard drive, usually we divide them into four categories: operating system issue, logical failure, mechanical failure and human error.
If you can not get access into your hard drive, first thing to do is checking out whether the hard drive is really dead or not. The easiest way is remove the failed hard drive from PC and connect it to another computer with USB drive adapter. If it can be detected by the other computer, the files in it should be fine, but you need to reinstall operating system to retrieve files.
In a logical failure, the drive's components are not damaged, but the drive is not able to find and navigate the data due to partition table, Index and Meta data damaged or Boot Sector/Super Block corrupted. In this case, if the data are not overwritten, the data still exist in the hard drive, and you can recover files from hard drive by yourself with hard drive recovery software like Card Data Recovery($24.95), which is tailored for Windows hard drives. It has corresponding Mac version --Card Data Recovery for Mac ($39.95). Both of them are price-effective than any similar programs on the market, such as Ontrack EasyRecovery ($199), Stellar Phoenix Windows Data Recovery ($49), etc.
A mechanical failure means your drive has broken parts that are preventing it from working. For example: PCB burned, Firm corrupt, Head & motor failed, Platter scratch. If you can hear a telltale clicking sound when attempt to access files, your data may still be there. But you need a professional computer repair service to help you get them back. There are many local hard drive data recovery company in the Internet, choose the perfect one for yourself with a reasonable price as well as good service.
Sometimes, you may mistakenly delete files with Shift+Delete or accidently format hard drive. More seriously, installed procedures may delete files by force, or if computer was infected by viruses, and they scramble your valuable data, making the hard drive function abnormally. In these cases, data was recoverable. And luckier than mechanical failure, you can recover formatted hard drive or recover deleted, lost, inaccesbile data from hard drive with hard drive recovery program Card Data Recovery as well.
If you are going to upgrade the drive in your notebook, which brand do you buy to avoid high failure rate? Here are the major hard drive brands: Toshiba, Fujitsu, Seagate, Hitachi, Western Digital. Sometimes, hard disk drive failure happened far too early in a hard drive's life. If you detect an imminent hard drive failure early, backup the data to external hard drive as soon as possbile. If unfortunately lost the data, you can get them back by using Card Data Recovery before hard drive actually fails.
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