Tip & How-To about Computers & Internet

Hard Disk Data Recovery

Definition of Hard Disk: Hard Drive is a storage device where you can store any types of data and file. Hard Drive is available as external and internal device. We know PC storage device as internal system Hard Disk. When you save data or install programs on your computer, the information is typically written to your Hard Disk. The Hard Disk is a spindle of magnetic disks, called platters, that record and store information. There are several interface standards for passing data between a Hard Disk and a computer. The most common are IDE and SCSI. Hard Disk is made of one or more aluminium or glass platters, coated with a ferromagnetic material. Most Hard Disks are found as Parallel ATA (PATA), Serial ATA (SATA) or SCSI device.

Difference with Floppy Drive:
The term hard is used to distinguish it from a soft, or floppy, disk. Hard Disks hold more data and also faster than floppy disks. As an example a Hard Disk can store anywhere from 10 to more than 100 gigabytes, where most floppies have a maximum storage capacity of 1.4 megabytes. Floppy is more risky device than Hard Disk for losing data.
Problem with Hard Disk:

Most common problems of Hard Disk which may arise anytime are Booting problem, OS Installation problem, Hard drive crashing and another Hard Disk not showing original space or not showing partition etc. But in every case the risk is loss of data. In some of cases formatting and reloading of Operating System can recover your Hard drive and make it useful but formatting can recover a blank Hard Disk only without data. But you have to recover Hard Disk with data, so formatting is not possible.


Data Recovery:

Data recovery is the process of retrieving back data from the damaged media. The damage of storage media can be physical damage and logical damage. The data is retrieved back by recovery experts after determining the type of the damage caused to the storage media. Most of cases data recovery is important and formatting is not possible there. So that I need to choose another way for solution of this type of problems of Hard Disk. The first and secure way to recover a Hard Disk is using data recovery software.


Recover Data from crashed Hard Disk: Power surges, Software Corruption or Malfunction, Hardware or system failure, Natural calamities, User errors may crash your Hard Drive. Data recovery software helps to retrieve or recover the data from the crashed hard Drive. Data recovery software gives an easy and Graphical User Interface with less difficulty so that the data can be recovered easily. The recovery software helps to recover the data and restore them on a second Hard Disk, the Hard Disk being connected to the computer and recognized by the BIOS, the recovered data can be stored on a safe location on the second disk.


Logical data recovery: In a data loss situation when the Hard Drive is perfectly fine and the BIOS recognizes the Hard Drive but reports a read error, logical data recovery technique is very helpful. Here the files that are damaged or corrupted by any user error or virus attack are rebuilt rather than repairing the Hard Drive.


Fragmentation: When the FAT entry is lost during accidental file deletion, formatting or partition deletion that particular block of Hard Drive becomes inaccessible. Some data recovery software makes an attempt to rebuild the files without a FAT entry. This technique is very efficient if the file size is smaller than the clusters size. But it is inefficient in recovery the larger files.


Data Recovery from deleted partition: Partition is allocation of memory in different sections. Each partition will be like separate disk drives. Partition is very use full when the user is using operating systems more than one. Usually after formatting the disk it may not be able to recognize a partition because of accidental deletion of the partition table or by virus infection. The partition is not actually deleted; it can be recovered by using recovery tools and copy the data present in the partition to the required destination. Formatting the drive erases a large amount of data present on it, but not all the data. The recovery of the data depends on the fragmentation of the file system as the parts of files are being placed on different places in the drive. The data recovery software will assume that files were not fragmented and stored in continuous clusters. If the partition was formatted using different file system, then recovery process will be very complicated.


Another Data recovery process: If you don't have any data recovery software you can try another process to recover data. Attach the Hard Drive with another system in slave or second SATA.If detect the drive then boot to the first Hard Drive and use the bad Hard Drive as secondary. Then you can copy the data from the second drive to first drive easily. Here have another process to recover data from a crashed Hard Disk. But it is so risky, and should not try to do this for an inexpert person. First pack the Hard Disk in a bag properly where moisture can't attack. Now freeze it upto get chill. After freezing quickly attach with a system in secondary, and copy the data within the Drive will come in room temperature.

So the most secure process to recover data from a Hard Disk is to use data recovery software. It is available in market.

Posted by on

Computers & Internet Logo

Related Topics:

Related Questions:

7 Answers

external hard drive format recovery


Install ReclaiMe file recovery from www.reclaime.com in your computer connect the hard drive and you will see the disc the way it was before. With a few clicks you will recover your files.

Dec 22, 2014 | Western Digital Elements powered by WD 320...

1 Answer

I have the Lacie Minidisk Ethernet 500 GB that contains all my house PC backup. I both an USB Minidisk Lacie (1 GB) in order to use MySafe feature but it never worked.


Hello Elio,

Use MySafe to back up the files stored on the Ethernet Disk mini Home to an attached USB storage device. This way, if files on the Ethernet Disk mini are damaged or accidentally deleted, you can restore them to their original locations.
There are three main steps to using MySafe,Connecting an external USB hard drive,Backing up files to the external USB hard drive,Restoring files to the Ethernet Disk mini (if necessary)
Before you can back up files, you need to connect a hard drive to your Ethernet Disk mini via the USB port on the back. Use a hard drive that is USB 2.0 compatible.
While connecting an external hard drive make sure your Ethernet Disk mini is turned on and connected to your network.Turn on the external USB hard drive.Connect the external hard drive's USB cable to the USB port on the back of the Ethernet Disk mini, just like you would connect the external hard drive to your computer.Confirm that the drive is properly connected. Log in and click on the Administer HipServ link. Click on USB External Storage under System.
To back up files, navigate to the file or folder you want to back up to the external hard drive and click on the disk icon in the "Backup" column of the file list.When you back up files to MySafe, the Ethernet Disk mini duplicates the file path in MySafe so that everything you back up is organized in MySafe just as in its original location. So, if you copy a file from MyLibrary, a MyLibrary folder will appear in MySafe, with all folders leading to the backed up file.

Always click the Safely Remove Drive button on the USB External Storage before unplugging your MySafe external hard drive. Wait for the interface to change and for the Use Drive button to appear before disconnecting the USB cable from the Ethernet Disk mini. Failure to safely remove your external hard drive before disconnecting the USB cable can cause data loss and/or damage the drive. Always use the Safely Remove Drive feature when disconnecting an external hard drive.

Jun 03, 2011 | LaCie Ethernet Disk Mini, 500 GB Hard Disk...

1 Answer

I have IBM eServer with ServeRaid-7K on board controller and have 3 SCSI 73GB hard drives configured in RAID-5 array. Hard Drives are running critically low on space and I bought 3 300GB scsi Ultra320 hard drives to upgrade the existing 73GB HDs. What's the best possible way to upgrade these hard drives without a chance of loosing data or needing to reinstall everything? Please help !!


First, buy an external storage device, at least 80GB (although it's currently difficult to find any _smaller_ size!) and make a file-by-file, folder-by-folder, backup of your 73GB of "data".

Second, buy another external storage device, and do a Google-search for "drive image freeware".
Pick one of those applications, and do a "image" backup to this second external storage device.

Third, disconnect the 3 "old" drives, carefully label them, and set them aside.

Fourth, connect the 3 "new" drives, delete the old RAID-5 array definition,
and create a new RAID-5 array definition.

Fifth, do an "image restore" from the second external storage device to the new array.

If you have any problems, all you need to do to "back-out" is to:
* disconnect the "new" drives
* reconnect the "old" drives
* delete the "new" array definition
* redefine the "old" array definition

and you're back to the "old" configuration.

Dec 07, 2010 | IBM ServeRAID-7k Controller (71p8642) SCSI...

1 Answer

How do I completely reset my external hard drive


1. You need to check how much free disk space is available on your laptop.
2. You need to check what duplicated files you have on both the laptop and the external hard drive and which is the latest version.
3. You need to decide to move the latest versions of the data files from the external hard drive to the laptop. This automatically delete these from the external hard drive. The older versions on the external hard drive can be deleted.
4. Now you need to check how much data is stored on your external hard drive.
5. If the amount of data stored on the external hard drive exceeds the available disk space on the laptop, then you cannot copy these files to the laptop.
6. If you have sufficient disk space on the laptop you can copy the data from the external hard drive to the laptop. I suggest you make a folder to copy this data to it.
You can now delete all the data from the external hard drive or you can format the external hard drive to make a clean external hard drive.


Oct 01, 2009 | Western Digital WD Passport 250GB Portable...

1 Answer

external drive with files can't open


Maybe partition on a drive has failed. You should not partition your drive, as you will lose all your data this way. There are lot of programs that might help you restore data from the disk. I recommend that you download TuneUp Utilities here and install it on your computer. After the installation process completes, run the program.

When the program launches, click Solve problems, and then TuneUp Undelete. Follow the instructions to restore your files.

You will need enough storage on other hard disks on your computer to support the data from external disk.

After you salvage all the files to your local disk, you can safely format external drive, and then put these files back on it.

If you need any further assistance, please ask.

Jan 17, 2009 | Maxtor Personal Storage 3200 (U01E200) 200...

Not finding what you are looking for?

206 people viewed this tip

Ask a Question

Usually answered in minutes!

Top Computers & Internet Experts

Doctor PC
Doctor PC

Level 3 Expert

7733 Answers

kakima

Level 3 Expert

102366 Answers

David Payne
David Payne

Level 3 Expert

14161 Answers

Are you a Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Loading...