aliasing (or renaming) kern.geom.debugflags

Glen Barber gjb at
Fri Oct 7 20:37:39 UTC 2011

On 10/7/11 4:27 PM, Warren Block wrote:
>> In my experience, without kern.geom.debugflags=16, the MBR will not be
>> written to the memstick, leaving you with what would effectively be a
>> coaster in the not-so-distant past.
> Tried it just now with the 9.0-BETA3 memstick image.


> Followed by removing the memory stick without unmounting it to avoid
> overwriting part of the image.  No obvious problems, but no, it's not
> polite.  (I'm thinking "automounter" here.)

Me not being one that uses hald or devd for USB, I'm certain the device
was not mounted when writing the memstick image.  In the former case of
your test, is the USB stick bootable?

Glen Barber | gjb at
FreeBSD Documentation Project

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