Date: Mon, 18 Sep 2017 11:12:11 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 222425] MBR broken after "gpart backup ada0 | gpart restore -F ada1" Message-ID: <bug-222425-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D222425 Bug ID: 222425 Summary: MBR broken after "gpart backup ada0 | gpart restore -F ada1" Product: Base System Version: 11.1-RELEASE Hardware: amd64 OS: Any Status: New Severity: Affects Only Me Priority: --- Component: bin Assignee: freebsd-bugs@FreeBSD.org Reporter: chris@cretaforce.gr There is a problem with the MBR after running "gpart backup ada0 | gpart restore -F ada1" and because of this it's not possible to boot using this d= isk. This issue happens only with FreeBSD 11.1 and maybe 11.0. It doesn't happen with 10.3. How to reproduce the issue: gpart backup ada0 | gpart restore -F ada1 gpart bootcode -b /boot/pmbr -p /boot/gptboot -i 1 ada1 Then boot using ada1 I see: gptboot: invalid primary GPT header gptboot: invalid backup GPT header gptboot: unable to load GPT The only workaround is copying the MBR from ada0 to ada1: gpart backup ada0 | gpart restore -F ada1 dd if=3D/dev/ada0 of=3D/dev/ada1 bs=3D512 count=3D40 gpart recover ada1 gpart bootcode -b /boot/pmbr -p /boot/gptboot -i 1 ada1 More information here: https://forums.freebsd.org/threads/62376/ --=20 You are receiving this mail because: You are the assignee for the bug.=
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