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1answer
52 views

How to shred a device from end to begin?

The shred command (of coreutils 8.23) overwrites a device with configurable data from beginning to end which is perfectly fine for the use cases it is designed for (which are all related to write ...
0
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1answer
621 views

Complete wiping of hard drive - shred, wipe or dd?

I need to wipe all data of a number of hard drives, from Ubuntu Linux. I have found three command line tools: shred, wipe and dd. It seems kind of random what people recommend. Sometimes someone ...
0
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1answer
111 views

shred command overwrite value?

I'm trying to determine what shred uses to overwrite a file. Here's the description: Overwrite the specified FILE(s) repeatedly, in order to make it harder for even very expensive hardware ...
-5
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2answers
165 views

How to fix the computer?? Typed sudo shred -rfz ~/* (or something like that) [closed]

One &^%@&& advised me to press alt+f2 and then type the above. And i did it... on my Dad's computer. He's furious now. How to fix this?
0
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1answer
247 views

How do I securely format a Buffalo NAS wirelessly?

I have a Link Station Duo NAS which is attached to a router, how do I securely erase the information on it? File Shredder and Kill disk require it to be attached to my computer which it isn't. I also ...
2
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2answers
163 views

Faster tool than shred to make files a bit difficult to recover?

I need to shred files, but there are too many files and shred takes ages for each file. Each file is 4GB. Is there a faster tool than shred -n 1? Strangely, shred -n 1 on a 4GB file takes MORE time ...
5
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2answers
4k views

Why is GNU shred faster than dd when filling a drive with random data?

While securely erasing a hard drive before decommissioning I noticed, that dd if=/dev/urandom of=/dev/sda takes nearly a whole day, whereas shred -vf -n 1 /dev/sda only takes a couple of hours with ...