Date: Sat, 15 Sep 2012 12:03:38 -0700 From: Garrett Cooper <yanegomi@gmail.com> To: Benjamin Kaduk <kaduk@mit.edu> Cc: freebsd-hackers@freebsd.org, "Julian H. Stacey" <jhs@berklix.com> Subject: Re: Why fdisk can't open root disk with MBR for writing? Message-ID: <CAGH67wQ-wdPdTuMnRWBmK41GK6rZy5X2c27NOVrvYfLQSM3T1Q@mail.gmail.com> In-Reply-To: <alpine.GSO.1.10.1209151448200.861@multics.mit.edu> References: <201209151322.q8FDMobF058992@fire.js.berklix.net> <alpine.GSO.1.10.1209151448200.861@multics.mit.edu>
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On Sat, Sep 15, 2012 at 11:49 AM, Benjamin Kaduk <kaduk@mit.edu> wrote: > On Sat, 15 Sep 2012, Julian H. Stacey wrote: > >> I have been applying this diff to my man fdisk: >> >> http://berklix.com/~jhs/src/bsd/fixes/FreeBSD/src/gen/sbin/fdisk/ >> >> *** 8.0-RELEASE/src/sbin/fdisk/fdisk.8 Sat Mar 14 22:32:16 2009 >> --- new-generic/src/sbin/fdisk/fdisk.8 Sat Mar 14 22:35:10 2009 >> *************** >> *** 462,464 **** >> --- 462,468 ---- >> The >> .Xr bsdlabel 8 >> command must be used for this. >> + .Pp >> + When running multi user, you cannot write unless you first run this: >> + .br >> + sysctl kern.geom.debugflags=16 >> >> I never submitted it as a send-pr, >> anyone think I should submit it to help save people ? > > We have had a long discussion about kern.geom.debugflags starting here: > http://lists.freebsd.org/pipermail/freebsd-current/2011-October/028090.html > My understanding from that discussion is that your patch should not be > accepted. Correct. Either fdisk should be fixed or updated to point out that gpart should be used. There is some useful utility for fdisk still, but it's waning. Thanks, -Garrett
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