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Understanding the Disk Label (VTOC) (Doc ID 1017927.1)

Last updated on OCTOBER 05, 2022

Applies to:

Solaris Operating System - Version 8 and later
All Platforms


This document provides a detailed description of what is stored in SPARC[R]/Solaris' disk label.

This is intended to help in understanding the consequences of commands, such as format --> label which rewrites the disk label.

Also, this document explains the meaning of warning messages, such as:

corrupt label - wrong magic number
corrupt label - label checksum failed

To reinforce the fact that the disk label is written on-disk and does not change until being re-labeled, an example shows how to dissect the first sector taken directly from a disk and map it to the fields of Solaris disk label.


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