Re: need command for zeroing drive

On Saturday, Apr 26, 2003, at 03:45 US/Pacific, Thorsten Glaser wrote:

begin  electrogrammati illius Dragos Ruiu

dd if=/dev/zero of=/dev/sd0c bs=512k


You are all SOOO wrong. OpenBSD does not have UBC yet, thus you must
use the raw device. You can only write to the raw device when it's not
mounted.

Use /dev/rsd0c instead.


So for a summary in JD's case of:

# dd if=/dev/zero of=/dev/sd1c bs=1048576


He was filling up / on sd0 because he was creating a new file /dev/sd1c.

If he had unmounted /dev/sd1c and done this he would have succeeded:

# dd if=/dev/zero of=/dev/rsd1c bs=1048576


Right?

Thanks, Greg

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