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On Sun, Dec 1, 2019, 10:22 AM Tomasz CEDRO wrote:
> As my previous message got moderated, just a quick summary - looks
> like a GEOM_PART silently discards writes to MBR with a DD when it
> considers MBR broken (writing to the rest of the disk is possible). I
> have reported this as error:
>
I'm
As my previous message got moderated, just a quick summary - looks
like a GEOM_PART silently discards writes to MBR with a DD when it
considers MBR broken (writing to the rest of the disk is possible). I
have reported this as error:
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=242341
--
CeD
Anno domini 2019 Sun, 1 Dec 17:45:17 +0100
Tomasz CEDRO scripsit:
> On Sun, Dec 1, 2019 at 8:28 AM Scott Bennett wrote:
> > >Does GEOM in any way prevents me from using disk that has corrupt MBR?
> > Yes, most likely.
> >
> > >Why I cannot write a MBR from a file but I can from a md0?
> > >A
On Sun, Dec 1, 2019 at 8:28 AM Scott Bennett wrote:
> >Does GEOM in any way prevents me from using disk that has corrupt MBR?
> Yes, most likely.
>
> >Why I cannot write a MBR from a file but I can from a md0?
> >Any hints welcome :-)
> See the last line of your messages below.
> (..)
>
On Sun, 1 Dec 2019 13:14:16 +0300
Anatoly wrote:
> On Sun, 1 Dec 2019 08:28:01 +0100
> Gary Jennejohn wrote:
>
> > The geom code protects certain parts of the data area on the
> > drive, in particular GPT/MBR areas, unless ``sysctl
> > kern.geom.debugflags=16'' is run beforehand. One can see t
On Sun, 1 Dec 2019 08:28:01 +0100
Gary Jennejohn wrote:
> The geom code protects certain parts of the data area on the
> drive, in particular GPT/MBR areas, unless ``sysctl
> kern.geom.debugflags=16'' is run beforehand. One can see this in
> many places in the geom code.
>
> I always set this s