About Deleting Data
Do you think that emptying the Recycle Bin will permanently delete files or that formatting your hard disk will permanently erase the data? Actually, neither action will destroy data permanently.
For example, erasing a file in Windows by emptying the Recycle Bin means just marking the file information as "ERASED" in the index area. The data itself actually 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.
If you want to sell, donate, discard, or return your computer, you need to make sure to eliminate your confidential information such as:
• ID and Password
• Social security number
• Financial Documents
• Human resources data
• Tax Records
• Corporate Trade Secrets
• Bank account
• Customer database
• Credit card numbers
• ....And more
How to Erase Data Permanently
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.
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.
DOD 5220.22-M overwrites data a total of three times, first by 0x00, next by its compliment value 0xff, and finally by random values. After the final process is complete, the disk is read to verify data to make sure there is no lingering pattern.
DiskDeleter CD version has the following functions:
• View each byte of disk contents
• Securely delete hard disk data with 6 most important secure delete methods
1. Zero Write
2. Random Write
3. Random Random Zero
4. DOD 5220.22-M
5. NATO Standard
6. Peter Gutmann
• ReFormat disk
• Save a report on each of deleted disk. You can check the delete report by booting from the disk.
• Confirm the delete result by comparing disk contents of Before Delete and After Delete
• Easy to use wizard interface
To use DiskDeleter CD, you need to burn it onto a CD. Once you make the CD, Just insert it into the computer you want to destruct and boot from CD.
Supported Disk Types: Any disks that system BIOS can detect
• Hard-drives IDE/SATA/SCSI
• USB flash memory and USB disk
Operating Systems
• DOS, Windows 3.x/95/98/ME/NT/2000/2003/XP, OS/2, and Intel based Linux/Unix
Recommended System Configuration
• x86 hardware platform
• Minimum of 8 MB RAM
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