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1. simple erase: the data is all there, still sitting on the disk drive but the segment has been marked as "available". Next time you try to write data to the computer it MAY select that segment to overwrite, or it may select somewhere else on the disk. Who knows what a file manager will do.
2. Destructive erase: The computer first overwrites all data in the file with random data then marks the segment as available. It still may be possible to find ghost images of what was on the disk surface before. It's an expensive process but if someone is dedicated and has the time/money, much of the data can often be recovered.
3. Guaranteed destructive erase: remove the disk drive from your computer, smash it a few times with a great big hammer, build a fire in your barbecue pit and get the coals really hot, throw the pieces in and stir them up while using a hair dryer to feed more air into the coals to make them even hotter, remove the pieces of the platters after the fire dies down, smash them some more, cut the pieces apart, take a trans-Atlantic cruise and drop pieces into the ocean... that should do it.
The point I'm making is, how important is it to keep the data from being seen again? For most of us it's easy enough to just put a few really large files on the computer, delete what you want wiped then defrag the disk, add some more big files, delete some OTHER files, defrag the disk... repeat that a few times and statistically, you'll have cleared the information from your disk. If that's not good enough, there are always the other options.
FYI, there are applications available that can perform the destructive erases (overwriting with random data) or you can always defrag the disk then run a disk verification program that writes data to the unused sectors.
There certainly are plenty of options, just decide what you need.
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∙ 16y ago
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How do you maintain the hard disk?
In addition to deleting unneeded files there other valuable techniques that can help maintaining the integrity of files and optimizing disk performance.Here are some techniques:Defragmenting disksMoving files to spread the load between multiple disksusing disk utilities to find and repair damaged filesDeploying Raid techniques that extend the life of disks and provide disk redundancy.
Why it is showing error no space in hard disk?
The space on the hard disk is full delete some data from the hard drive it will be ok or add more hard disk in the system
Can you do home hard disk repair?
It is possible but not recommended to preform hard disk repair at home unless you have had some training or are willing to damage the hard disk. Special tools are required to prevent further damaging the hard disk.
Can you perform a hard disk recovery?
It depends on how damaged your hard disk is. There are some instances where there is nothing you can do to fix what's wrong with the hard disk. Other times you may have to insert you operating system disk to initiate a recovery.
How do you take backup of virus infected hard disk?
pls tell some idea to take backup of virus infeced hard disk
If a hardrive has a login password will formatting erase hardrive?
Some laptops provide a utility to lock a hard disk with a password. These passwords are not the same as BIOS passwords. Moving a locked hard disk to another machine will not unlock it, since the hard disk password is stored in the hard disk firmware and moves with the hard disk. Also, adding a new (unlocked) hard disk to a locked machine may cause the new hard disk to become locked. Also, note that hard disk lock passwords cannot be removed by reformatting the disk, fdisk or any other software procedure (since the disk will not allow any reads or writes to the disk, it cannot be reformatted.)You can test to determine if your hard disk is locked by attempting to access it in another laptop.
Where can one find comparisons of hard disk drive speeds?
To get hard disk drive speeds, one may search through many locations. Most websites that sell hard disk drives will allow one to select multiple hard disk drives to compare and contrast them. Once one has selected the hard disk drives to be compared, one can look for speeds offered. In addition, there are many websites that are devoted to the latest and greatest in technology and some of these have comparisons between the different hard disk drives.
How can do recovery the formated hard disk?
Hey, I would recommend you to send your hard disk to some good data recovery centre like Stellar Data Recovery centre. It will recover all your data without any hassles. You need hard disk recovery software to recover your data from formatted hard disk like stellar phoenix hard disk recovery software. It will recover your all data if you not overwrote on it. Cheers...
How do you wipe personal data from a hard drive?
(assuming youre using Windows) Click on start. Go to 'my computer' for XP or 'computer' for Vista. Right-click on the hard drive you wish to wipe the data from. Then click on format. WARNING: this will delete EVERYTHING from that hard drive and it does take some time. Note that while the steps in the above answer will delete all files on the hard disk, the data is not wiped in a format and is still recoverable. If you wish to remove the data in such a way that it is not recoverable you will have to use a file shredding application which overwrites the data and erases it again and repeats the process a number of times. There are several applications designed for this purpose, I will link to a freeware site below with a list of several disk utilities including some disk wiping utilities. Also, if you wish to wipe any recoverable data from the free space of your hard disk, but retain all other files. There is a program called "disk redactor" which does just this. Simply delete any files you wish to shred, empty the recycle bin, and then use disk redactor to securely wipe all the blank space on your hard disk. Disk redactor is free, and i will link it below.
Where can one purchase hard disk repair software?
There are a number of places online a person can purchase hard disk repair software. Some of these include harddiskrepairsoftware, unistal and recoveryourdata.
What are some recent advances in hard disk technology?
Magnetic Platter based Hard disk drives are widely used but Solid State Drives using Flash Memories providing less seek time - Low Latency are recent advances in Hard disk Technology.
What are some common data recovery disasters?
Data recovery disasters could include accidentally deleting files on one's hard disk, accidentally formatting a partition on one's hard drive, physical damage of the hard disk as well as computer viruses affecting the disk.
