[Bug 222425] GPT broken after "gpart backup ada0 | gpart restore -F ada1"

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Wed Dec 5 14:43:39 UTC 2018


https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=222425

--- Comment #12 from chris at cretaforce.gr ---
​The problem is related to:

gpart backup ada1 | gpart restore -F ada0

If after the gpart restore I remove and recreate the freebsd-boot partition
then it works:

gpart delete -i 1 ada0
gpart add -a 4k -t freebsd-boot -s 512k ada0
gpart bootcode -b /boot/pmbr -p /boot/gptboot -i 1 ada0

Keep in mind that you have to use mfsbsd to remove the partition or maybe you
can use this command to do it in live system:

sysctl kern.geom.debugflags=16

Another user in freebsd forum report this:

MBR + UFS --- OK
GPT + UFS --- NO
GPT + ZFS --- OK

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