NetBSD Problem Report #47599

From www@NetBSD.org  Wed Feb 27 16:10:56 2013
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Date: Wed, 27 Feb 2013 16:10:55 +0000 (UTC)
From: chris.burt@rieo.co.uk
Reply-To: chris.burt@rieo.co.uk
To: gnats-bugs@NetBSD.org
Subject: Cannot boot NetBSD after reinstall
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>Number:         47599
>Category:       install
>Synopsis:       Cannot boot NetBSD after reinstall
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    install-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Feb 27 16:15:00 +0000 2013
>Last-Modified:  Tue Mar 05 11:35:01 +0000 2013
>Originator:     Chris Burt
>Release:        6.0.1
>Organization:
Rieo
>Environment:
6.0.1 NetBSD 6.0.1 (GENERIC) amd64
>Description:
Installing NetBSD from CD on a single hard disk (160GB SATA) works OK - partitioned disk, installed packages, rebooted and it worked fine.

I then booted from the NetBSD CD to install again, but this time used the same disk partition settings I had previously set up, installed packages, rebooted and received the error NetBSD MBR, No Operating System.

I repeated the same process, this time slightly adjusting the size of one of the partitions and it worked fine.

It seems like reinstalling the system using previously defined disk partition settings causes an error.

Here is the partition info I used:

NetBSD# df -h 
Filesystem         Size       Used      Avail %Cap Mounted on
/dev/wd0a           16G        63M        15G   0% /
/dev/wd0f           66G        66M        63G   0% /var
/dev/wd0e           38G       945M        35G   2% /usr
/dev/wd0g           16G        16M        15G   0% /home
tmpfs              2.0G       4.0K       2.0G   0% /tmp
kernfs             1.0K       1.0K         0B 100% /kern
ptyfs              1.0K       1.0K         0B 100% /dev/pts
procfs             4.0K       4.0K         0B 100% /proc

>How-To-Repeat:
Please see Full Description.
>Fix:
Adjusting the size of one of the partitions for a reinstall works around the problem.

>Audit-Trail:
From: Julian Fagir <gnrp@komkon2.de>
To: gnats-bugs@NetBSD.org
Cc: 
Subject: Re: install/47599: Cannot boot NetBSD after reinstall
Date: Mon, 4 Mar 2013 22:30:33 +0100

 Hi,

 On Wed, 27 Feb 2013 16:15:01 +0000 (UTC) chris.burt@rieo.co.uk wrote:
 > I then booted from the NetBSD CD to install again, but this time used the
 > same disk partition settings I had previously set up, installed packages,
 > rebooted and received the error NetBSD MBR, No Operating System.
 > 
 > I repeated the same process, this time slightly adjusting the size of one
 > of the partitions and it worked fine.

 what exactly did you do and what did you not do?
 Did you reinstall the NetBSD boot blocks? And did you recreate the
 filesystems on the partitions?

 Regards, Julian

From: Chris Burt <chris.burt@rieo.co.uk>
To: <gnats-bugs@NetBSD.org>
Cc: 
Subject: Re: install/47599: Cannot boot NetBSD after reinstall
Date: Tue, 5 Mar 2013 09:51:27 +0000

 Hi,

 I'm new to NetBSD so please forgive my lack of proficiency. On all 
 occasions I selected the following:

 - Install NetBSD to hard disk
 - Use wd0
 - Custom installation (Kernel + Base + System + Compiler Tools)
 - Use entire disk

 - On the first attempt (which worked fine) I partitioned the disk and 
 accepted the default file system formatting, I selected "Use BIOS 
 console" and Installed from CD
 - On the second attempt I did the same, but the default disk formatting 
 that automatically came up on the menu was what as I had previously 
 partitioned it to be on the last install, so I accepted it. I selected 
 "Use BIOS console" again. After I rebooted the machine it gave the 
 aforementioned error about not finding an OS.
 - On the third attempt I did exactly the same as the second attempt but 
 instead of accepting the disk layout I increased the size of one of the 
 partitions slightly and selected "Use BIOS console", rebooted and it worked.

  From a beginner's perspective the 2nd attempt "should" have worked, but 
 perhaps something needed to be done that wasn't obvious to me. I'm not 
 sure if the file system was reinstalled on the 2nd attempt, I'm afraid 
 I'm guilty of hammering the "OK" button and getting on with something else.

 Thanks,
 Chris


 On 04/03/13 21:35, Julian Fagir wrote:
 > The following reply was made to PR install/47599; it has been noted by GNATS.
 >
 > From: Julian Fagir <gnrp@komkon2.de>
 > To: gnats-bugs@NetBSD.org
 > Cc:
 > Subject: Re: install/47599: Cannot boot NetBSD after reinstall
 > Date: Mon, 4 Mar 2013 22:30:33 +0100
 >
 >   Hi,
 >   
 >   On Wed, 27 Feb 2013 16:15:01 +0000 (UTC) chris.burt@rieo.co.uk wrote:
 >   > I then booted from the NetBSD CD to install again, but this time used the
 >   > same disk partition settings I had previously set up, installed packages,
 >   > rebooted and received the error NetBSD MBR, No Operating System.
 >   >
 >   > I repeated the same process, this time slightly adjusting the size of one
 >   > of the partitions and it worked fine.
 >   
 >   what exactly did you do and what did you not do?
 >   Did you reinstall the NetBSD boot blocks? And did you recreate the
 >   filesystems on the partitions?
 >   
 >   Regards, Julian
 >   

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