can't mount root during freebsd-update 7.0 -> 8.1 on amd64
demelier.david at gmail.com
Sun Dec 5 20:43:09 UTC 2010
2010/12/5 <joost at jodocus.org>:
> I'm trying to upgrade a amd64 box from 7.0-RELEASE to 8.1-RELEASE with
> freebsd-update. After the first reboot the 8.1R GENERIC kernel loads (I'm
> using a custom kernel, so at this point the generic kernel is loaded
> It then claims it can't mount /
> One thing that's odd is that instead of finding ad4s1a it finds ad4a. Same
> for the other filesystems. It however can't find init on this device.
> Did I miss something important in src/UPDATING?
> Joost Bekkers
> freebsd-questions at freebsd.org mailing list
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Here : http://ivoras.sharanet.org/freebsd/freebsd8.html
GEOM_PART becomes the default slicer
Status: Committed to -CURRENT
Will appear in 8.0: sure
Author: Marcel Moolenaar & others
Web: commit message
GEOM_PART (gpart) is a new GEOM partition class (slicer) and utility
that rolls up support for many partitioning formats (MBR, BSD, GPT
etc.) into a single code base.
NOTE: Caveat when upgrading! GEOM_PART might interpret existing
partition tables (especially if many operating systems are present -
multi boot) differently than the previous classes. Your devices might
NOTE: Some old utilities like bsdlabel may not work if the kernel
doesn't include GEOM_BSD and other old slicer classes. In other words,
bsdlabel et al don't work with GEOM_PART.
Maybe you're encountering this trouble right now. what I would advise
you is using labels. Please do the following :
tunefs -L root /dev/ad4a
tunefs -L var /dev/ad4e (assuming it's e on your system ?)
and for usr, tmp, etc ...
>From a fixit environment. then edit your /etc/fstab and place
/dev/ufs/root /dev/ufs/var instead of hardcoding the device node.
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