I am using [badblocks](http://en.wikipedia.org/wiki/Badblocks) to do a destructive erase of any data on the disk; using the following command:

`badblocks -wsp 0 /dev/sdb1`

I passed the option `-p 0` in the hopes that this would result in only a single pass, but I am getting multiple passes:

```
Testing with pattern 0xaa: done
Reading and comparing: done
Testing with pattern 0x55: done
Reading and comparing: done
Testing with pattern 0xff: done
Reading and comparing: 19.01% done, 7:43:47 elapsed. (0/0/0 errors)

```

From reading the manpage, I can see that the `-w` option itself includes four passes:

> 
> -w Use write-mode test. With this option, badblocks scans for bad blocks by writing some patterns (0xaa, 0x55, 0xff, 0x00) on every
> block of the device, reading every block and comparing the contents.
> This option may not be combined with the -n option, as they are
> mutually exclusive.
> 
> 
> 

This is excessive for my needs. Is there any way to achieve a single destructive pass?