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How to Check UUID of Disk Partition

July 19, 2012 by Sharad Chhetri Leave a Comment

In this post we will explain about UUID and to check UUId of disk partition in Linux systems.
A universally unique identifier (UUID) is an identifier standard used in software construction, standardized by the Open Software Foundation (OSF) as part of the Distributed Computing Environment (DCE).

The intent of UUIDs is to enable distributed systems to uniquely identify information without significant central coordination. In this context the word unique should be taken to mean “practically unique” rather than “guaranteed unique”. Since the identifiers have a finite size it is possible for two differing items to share the same identifier. The identifier size and generation process need to be selected so as to make this sufficiently improbable in practice. Anyone can create a UUID and use it to identify something with reasonable confidence that the same identifier will never be unintentionally created by anyone to identify something else. Information labeled with UUIDs can therefore be later combined into a single database without needing to resolve identifier (ID) conflicts.

Linux now prefers to use UUID (Universally Unique Identifier), LABEL, or symlinks to identify media storage devices on a system. Directly using /dev/hd*# or /dev/sd*# is no longer preferred since these device assignments can change between system boots:

From given below commands you can find the UUID of Disk.

ls -l /dev/disk/by-uuid/

OR

blkid

Declaration: The in depth information is collected from Wikipedia and other sources.

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Sharad Chhetri is an experienced Linux - Cloud Engineer & freelancer. Working on Open Source Technology since RHEL 4.0 (Red Hat Enterprise Linux). He loves sharing the knowledge which earned from real scenarios. Don't be surprised if you find him in technology seminars and meetup groups. You can contact him on email for freelance projects at admin@sharadchhetri.com. Read More…

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