Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Labeling VTOC
Operating Systems Solaris Labeling VTOC Post 302423768 by adelsin on Saturday 22nd of May 2010 07:32:32 AM
Old 05-22-2010
Quote:
Originally Posted by chandu.bezawada
now i would like to rearrange the partition table and do some mountings on it
later i would like to relabel the disk with backed up VTOC.

then in that case, will i get the previous data?

I'm still confused. Why would you need to rearrange the partition table? As in, put two where six is and six where four is? At that point your just changing your name and number. I'm unsure if that would work.

Code:
* Unallocated space:
*       First     Sector    Last
*       Sector     Count    Sector
*           0   8395200   8395199
*
*                          First     Sector    Last
* Partition  Tag  Flags    Sector     Count    Sector  Mount Directory
       0      2    00    8395200   4711488  13106687   /
       1      7    00   13106688   4192512  17299199   /var
       2      5    00          0 143349312 143349311
       3      3    01          0   8395200   8395199
       5      0    00   17299200 108058944 125358143   /opt
       6      4    00  125358144   9595968 134954111   /usr
       7      8    00  134954112   8395200 143349311   /export/home

I'm pretty sure that the sector counts are where they do there starting and stopping. If you change anything in the sectors, you will probably loose data. I'm unsure what you are trying to do exactly. If you made a partition table too big, let's say on /usr, you should be able to backup /usr, re-partition that partition. Reformat and then restore.

Does this help?
 

8 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

To display VTOC information

Hello everybody! 1. Can someone explain, how to obtain the information about every logical volume in the system? 2. And then list vtoc on every volume in the system? O.S.: UnixWare 7.1.* shell: ksh (1 Reply)
Discussion started by: gold4u
1 Replies

2. UNIX for Dummies Questions & Answers

backing up the vtoc

Can you backup the vtoc, then restore it if you somehow mess it up? This is solaris 9, x86. (1 Reply)
Discussion started by: BG_JrAdmin
1 Replies

3. Solaris

Automatic disk labeling

First post :) ... Here is a script for automatic labeling of previously unlabeled disks. Other methods exist (format -f cmd_file), but I like this because it's all in one place. #!/bin/ksh #---------------------- # format_label # Automatic labeling of previously unlabeled disks #... (1 Reply)
Discussion started by: kwachtler
1 Replies

4. Solaris

no VTOC problem

I am using Solaris 10. I restart it today because it halts during working. When i restart it then there is nothing. No Operating system found. I try to boot from Solaris 10 CD but it shows a single disk but there were two operating systems Solaris 10 and windows Xp. There is now only on complete... (2 Replies)
Discussion started by: mansoorulhaq
2 Replies

5. Solaris

tegsrding VTOC........

hi all......... if my VTOC is corrupt or deleted then what to do.....is there any method to reconfigure that........ my second question is , how to see the data block and super block ..... my third question is what is the difference between raw device & block device.... (2 Replies)
Discussion started by: sudhansu
2 Replies

6. Solaris

Remove VTOC.

Hi, Does anyone know how I can remove the VTOC from a disk. I'm trying to initialize this disk under VxVM but it won't let me as there is still a VTOC present on the disk. I don't want to encapsulate the disk. I just want to have a raw disk that I can play with. Any ideas? Thanks. (5 Replies)
Discussion started by: gwhelan
5 Replies

7. UNIX for Dummies Questions & Answers

Numerical Labeling using sed

Hi, I have been working on this problem, but could only get so far. I have a file that looks like this (cat,chimp,(((dog,cat,cow),orangutan),((horse,((cat,dog),(cow,pig))),cat,mouse,rat))); I would like after each instance of the word 'cat' to have an incrementing numerical label. I... (5 Replies)
Discussion started by: cavanac2
5 Replies

8. Shell Programming and Scripting

PHP Labeling/Punctuation Syntax Question

Greetings! My first PHP question; and, no doubt, a "no-brainer" for the initiated :) The question centers around the proper syntax for input field labeling. The snippet which puzzles me (and the candidate which I wish to modify) goes like this:<?php _e('Hello World'); ?>:<br />What I'd like... (0 Replies)
Discussion started by: LinQ
0 Replies

LEARN ABOUT DEBIAN

prtvtoc

prtvtoc(1M)                                               System Administration Commands                                               prtvtoc(1M)

NAME

       prtvtoc - report information about a disk geometry and partitioning

SYNOPSIS

       prtvtoc [-fhs] [-t vfstab] [-m mnttab] device

DESCRIPTION

       The prtvtoc command allows the contents of the label to be viewed. The command can be used only by the super-user.

       The  device  name  can  be the file name of a raw device in the form of /dev/rdsk/c?t?d?s2 or can be the file name of a block device in the
       form of /dev/dsk/c?t?d?s2.

OPTIONS

       The following options are supported:

       -f              Report on the disk free space, including the starting block address of the free space, number of blocks, and unused  parti-
                       tions.

       -h              Omit the headers from the normal output.

       -m mnttab       Use mnttab as the list of mounted filesystems, in place of /etc/mnttab.

       -s              Omit all headers but the column header from the normal output.

       -t vfstab       Use vfstab as the list of filesystem defaults, in place of /etc/vfstab.

EXAMPLES

       Example 1: Using the prtvtoc Command

       The following example uses the prtvtoc command on a 424-megabyte hard disk:

       example# prtvtoc /dev/rdsk/c0t3d0s2
       * /dev/rdsk/c0t3d0s2 partition map
       *
       * Dimension:
       *     512 bytes/sector
       *      80 sectors/track
       *       9 tracks/cylinder
       *     720 sectors/cylinder
       *    2500 cylinders
       *    1151 accessible cylinders
       *
       * Flags:
       *   1: unmountable
       *  10: read-only
       * *                           First    Sector   Last
       * Partition   Tag   Flags   Sector   Count    Sector   Mount Directory
            0         2     00          0    76320    76319   /
            1         3     01      76320   132480   208799
            2         5     00          0   828720   828719
            5         6     00     208800   131760   340559   /opt
            6         4     00     340560   447120   787679   /usr
            7         8     00     787680    41040   828719   /export/home
       example#

       The data in the Tag column above indicates the type of partition, as follows:

       Name                        Number
       UNASSIGNED                  0x00
       BOOT                        0x01
       ROOT                        0x02
       SWAP                        0x03
       USR                         0x04
       BACKUP                      0x05
       STAND                       0x06
       VAR                         0x07
       HOME                        0x08
       ALTSCTR                      0x09
       CACHE                       0x0a
       RESERVED                    0x0b

       The data in the Flags column above indicates how the partition is to be mounted, as follows:

       Name                        Number
       MOUNTABLE, READ AND WRITE   0x00
       NOT MOUNTABLE               0x01
       MOUNTABLE, READ ONLY        0x10

       Example 2: Using the prtvtoc Command with the -f Option

       The following example uses the prtvtoc command with the -f option on a 424-megabyte hard disk:

       example# prtvtoc -f /dev/rdsk/c0t3d0s2
       FREE_START=0 FREE_SIZE=0 FREE_COUNT=0 FREE_PART=34

       Example 3: Using the prtvtoc Command on a Disk Over One Terabyte

       The following example uses uses the prtvtoc command on a disk over one terabyte:.

       example# prtvtoc /dev/rdsk/c1t1d0s2
       * /dev/rdsk/c1t1d0s2 partition map
       *
       * Dimensions:
       *     512 bytes/sector
       * 3187630080 sectors
       * 3187630013 accessible sectors
       *
       * Flags:
       *   1: unmountable
       *  10: read-only
       *
       *                          First     Sector    Last
       * Partition  Tag  Flags    Sector     Count    Sector  Mount Directory
       0      2    00         34    262144    262177
       1      3    01     262178    262144    524321
       6      4    00     524322 3187089340 3187613661
       8     11    00  3187613662     16384 318763004

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWcsu                      |
       +-----------------------------+-----------------------------+

SEE ALSO

       devinfo(1M), fmthard(1M), format(1M), mount(1M), attributes(5)

WARNINGS

       The mount command does not check the "not mountable" bit.

SunOS 5.10                                                          25 Jul 2002                                                        prtvtoc(1M)
All times are GMT -4. The time now is 05:01 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy