Windows 7: How can I write zeros to a cd
I have a CD I used for data backups. Want to crush the contents of each CD with all zeros before their transmission, but can't. I tried the format format d: /fs:UDF p:2 command and it seem to work, but he finished in less than 30 seconds, which seems too fast (702 MB CD).
Displays 'Properties' on the CD and it says is 321 MB used space and free space is 380 MB. Clearly zeros have not been written to the disk.
How to make sure that none of my data remains on the CD?
Jane_Eyre_0102
An easy answer. I considered cutting upward from the CDs, but I am old and do not have enough strength to cut dozens of CDs hand. Also, I hate to contribute to another landfill. If any of my data is left on the CD, I could donate it to a school or a mission.
Writable CDs are old technology. They also have a reputation for being unreliable: much becomes unreadable after a year or two. You may find it difficult to find someone who is willing to face them. I wouldn't have them if you gave them to me. ("USB keys") Flash drives are easier to manage, have much more capacity, and are also more reliable. I suggest you do this:
- Find two blocks of wood. Put them on the floor with a gap of 4 "between them.
- Wrap each CD in a thick layer of newspapers.
- Place the package on the blocks.
- He struck with a hammer. The CD will stop immediately.
You can also use a sharp instrument (knife, screwdriver) to draw some deep scratches on each CD.
Tags: Windows
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