[Nottingham] 1GB of \0 (aka null)

[Peter Chang]

> How best to instead get 1GByte (or whatever) of 0xff ?

Use dd and then pipe to tr.

> And what is best for overwriting unused areas of the hdd so that bzip2 
> can achieve maximum compression? (I'm guessing all ff's or all 00's will 
> do nicely.)

Anything that's a repeating sequence will probably compress well.

Peter



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