CmdLnKid cmdlnkid at gmail.com
Sun Jun 14 17:11:02 UTC 2009

On Sat, 13 Jun 2009 19:56 -0000, danallen46 wrote:

> On 13 Jun 2009, at 5:42 PM, Paul B. Mahol wrote:
>> On 6/13/09, Dan Allen <danallen46 at airwired.net> wrote:
>>> I have now proven that the recent post June 8th version of
>>> 	/usr/src/sys/boot/i386/loader/Makefile
>>> causes catastrophic data loss.
>> I hardly doubt that such change cause loss of data on entire drive.
>> There is always old loader to pick up.
> How do I get to the old loader when the machine boots and immediately stops? 
> There is no ability at this point in the boot process to try and get to the 
> old loader that I know of.  Is there a hidden magic key combination that 
> allows this?
> You are correct that the bulk of the file system is not touched, but the key 
> file partitioning headers get cleared and when you boot off of a DVD -- the 
> only way to get to the system that I know of -- and inspect the file 
> partitioning via whatever means you try, it shows that the root partition is 
> gone.  What was your main file system is gone.  I learned after many installs 
> that I could NOT do a newfs(8) and the setup program would re-mark things and 
> and files ended up re-appearing.
> My machine was well backed up so no great loss of data in the end, but it has 
> cost me lots of time to get this figured out.
> For me the real questions are these:
> * Why is my system the only one that this happens on?
> * What makes my machine setup different?
> * What is the bug in the bootable ZFS loader that munges the partition map?
> Dan
Is it possible that you have most likely been playing around with ZFS
before this and left some of the configurations of ZFS embedded in your
drive and the loader is picking that up.


  Sincerely,    -- Jason H.  ;;  Networked Systems Engineering.
    The Command Line Kid.    ;;  Multi-user Systems Advocate.
  mailto:gmail.com!cmdlnkid  ;;  1(616)403-XXXX / BSD Group.

  - (2^(N-1))

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