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| About Deleting Data |
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| Do you think that emptying the Recycle Bin will permanently
delete files? |
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| Do you think that formatting hard disk will permanently
erase hard drives' data? |
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| Actually, neither erasing files by
emptying the Recycle Bin nor formatting hard drives will
destruct data permanently. |
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Why aren’t they erased? |
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For example, to erase a file on Windows by emptying Recycle Bin means just to put information of "ERASED" in the index area. Data itself remains in the data area without being erased. Unfortunately, the file can be easily recovered and viewed by data recovery software within a few minutes. |
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Please try
this data recovery software, DataUndeleter to see if erased files on Windows can
be recovered. |
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How
to erase data permanently |
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To
erase a file permanently, you need to
overwrite data (for example, 0x00, 0xff,
random value, etc) in its index and data
areas. Normally, even if you simply overwrite
zero (0x00) on a file once, the data
cannot be recovered by any data recovery
software. But unfortunately the data
overwritten once or twice can be recovered
by magnetization pattern analyzers such
as Magnetic Force Microscopy (MFM). In
general, to erase data completely, it
is recommended to overwrite data at least
three times. |
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BluestSoft DiskDeleter supports DOD5220.22-M, which is the guideline published by the US Department of Defense for erasing magnetic media to guarantee that all data previously contained on that magnetic media is deleted permanently. |
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DOD 5220.22-M overwrites data total three times, first by 0x00 once then its compliment value 0xff once, and finally random values once. After the final process is complete, the disk is read to verify data to make sure there is no lingering pattern. |
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To protect your confidential information, BluestSoft DiskDeleter guarantees to permanently erase hard drive data on your computer with the following 6 methods, including DOD 5220.22-M. |
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Choose
DiskDeleter that fits your purpose of
use |
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[Personal
Use] |
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License
for Personal Use: |
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If
you purchase one copy of DiskDeleter,
you can use it on multiple computer systems
owned by you personally. For example,
if you own three computers, you can use
one copy of DiskDeleter for these three
computers. |
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* Please see BluestSoft End User License Agreement for more information. |
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[Enterprise
Use] |
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DiskDeleter
Pro version (including Floppy and
CD version) |
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DiskDeleter
Floppy version |
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License |
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Volume License
for Enterprise or Commercial Use: If
DiskDeleter will be used in your company
or for your commercial purpose; you will
need to purchase the number of licenses
you will use. Please contact our sales
for more information. |
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Site License for Internal Use: If you want to use unlimited number of DiskDeleter, Site License may be a good choice. Please contact our sales for more information.
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*
Please see BluestSoft End User License
Agreement for more information. |
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