/etc/path_to_inst Post: 302108434

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Special Forums Hardware Filesystems, Disks and Memory /etc/path_to_inst Post 302108434 by ailnilanjan on Monday 26th of February 2007 01:08:23 PM

02-26-2007

Registered User

Quote:

To recover you will need to boot off of a CD-Rom or the network, then mount your root partition by hand to copy /etc/path_to_inst back on there

Quote:

If you end up having to try that make sure at least you use another V490, hopefully one with exactly the same hardware inside it.

Thanks Ralph

It works as i have the V490 with the same hardware, you may say it a xerox copy. It worked when i was setting up the root device.

The system is now fine.

I can give the entire procedure by recalling the entire activites what i performed during recovery.

Code:

1- # boot cdrom -s (inserting the Solaris OS CD in the cdrom).
2- #fsck -y /dev/rdsk/c0t0d0s0 
3- #mkdir /a
4- #mount /dev/dsk/c0t0d0s0 /a
5- #grep rootdev /a/etc/system

The result will be something like this :
*       rootdev:        Set the root device.  This should be a fully
*               rootdev:/sbus@1,f8000000/esp@0,800000/sd@3,0:a
rootdev:/pseudo/md@0:0,0,blk       (for example)
The line that needs to be noted is the line beginning with rootdev. In the above example, the line "rootdev:/pseudo/md@0:0,0,blk" should 
be the line noted.

6- #mv /a/etc/path_to_inst /a/etc/orig.path_to_inst
7- #init 0
8- ok>boot -ar
Resetting... 
Software Power ON
Clock board TOD does not match TOD on any IO board.
Clock board TOD does not match TOD on any IO board.

slot Sun Enterprise 4000/5000, No Keyboard
OpenBoot 3.2.27, 320 MB memory installed, Serial #7923805.
Copyright 2000 Sun Microsystems, Inc.  All rights reserved
Ethernet address 8:0:20:78:e8:5d, Host ID: 8078e85d.

Rebooting with command: boot -ar
Boot device: /sbus@3,0/QLGC,isp@0,10000/sd@8,0:a  File and args: -ar
|
NOTICE: 64-bit OS installed, but the 32-bit OS is the default
 for the processor(s) on this system.
 See boot(1M) for more information.

Booting the 32-bit OS ...

9- Enter filename [kernel/unix]: (press enter)
Enter default directory for modules [/platform/SUNW,Ultra-Enterprise/kernel /platform/sun4u/kernel /kernel /usr/kernel]: 

10- Name of system file [etc/system]: (press enter)  
SunOS Release 5.8 Version Generic_117350-02 32-bit
Copyright 1983-2003 Sun Microsystems, Inc.  All rights reserved.
/
11- The /etc/path_to_inst on your system does not exist or is empty.
 Do you want to rebuild this file [n]? y
root filesystem type [ufs]: 

12- Enter physical name of root device
[/sbus@3,0/QLGC,isp@0,10000/sd@8,0:a]: <ENTER ROOTDEV noted  ABOVE in BOLD HERE >

13- After the system boots check for the presence of the file
cd /etc/
ls -l

Love
Nil

ailnilanjan

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bdiff

bdiff(1)							   User Commands							  bdiff(1)

NAME

       bdiff - big diff

SYNOPSIS

       bdiff filename1 filename2 [n] [-s]

DESCRIPTION

       bdiff  is  used in a manner analogous to diff to find which lines in filename1 and filename2 must be changed to bring the files into agree-
       ment. Its purpose is to allow processing of files too large for diff. If filename1 (filename2) is -, the standard input is read.

       bdiff ignores lines common to the beginning of both files, splits the remainder of each file into n-line segments, and invokes diff on cor-
       responding segments. If both optional arguments are specified, they must appear in the order indicated above.

       The  output  of	bdiff  is exactly that of diff, with line numbers adjusted to account for the segmenting of the files (that is, to make it
       look as if the files had been processed whole). Note:  Because of the segmenting of the files, bdiff does not necessarily find  a  smallest
       sufficient set of file differences.

OPTIONS

       n	The  number  of line segments. The value of n is 3500 by default. If the optional third argument is given and it is numeric, it is
		used as the value for n. This is useful in those cases in which 3500-line segments are too large for diff, causing it to fail.

       -s	Specifies that no diagnostics are to be printed by bdiff (silent option). Note:  However, this does not suppress possible diagnos-
		tic messages from diff, which bdiff calls.

USAGE

       See largefile(5) for the description of the behavior of bdiff when encountering files greater than or equal to 2 Gbyte ( 2**31 bytes).

FILES

       /tmp/bd?????

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWesu			   |
       +-----------------------------+-----------------------------+
       |CSI			     |enabled			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       diff(1), attributes(5), largefile(5)

DIAGNOSTICS

       Use help for explanations.

SunOS 5.10							    14 Sep 1992 							  bdiff(1)