sfdisk Goodies

Written by Benjamin Cane on 2011-06-25

Just some quickies for today.

Copy a partition table from one disk to another

# sfdisk -d /dev/sda | sfdisk /dev/sdb

or

# sfdisk -d /dev/sdc > partition_table.out  
# cat partition_table.out | sfdisk /dev/sdc

Get the size of a disk

# /sbin/sfdisk -s /dev/sdf

And finally the coolest part.

Partition a disk for linux without specifying a size (making 1 big partition).

# echo L | sfdisk /dev/sdf

You can do something similar to make multiple partitions but I'll leave that up to you and some googling.


Picture of Benjamin Cane

Benjamin's specialty is keeping the lights on for mission critical systems. He is currently building applications that enable high concurrency financial transactions.

Recently Benjamin published his first book; Red Hat Enterprise Linux Troubleshooting Guide. In addition to writing, he has several Open Source projects focused on making Ops easier. These projects include Automatron, a project enabling auto-healing infrastructure for the masses.


Publications

Identify, capture and resolve common issues faced by Red Hat Enterprise Linux administrators using best practices and advanced troubleshooting techniques

What people are saying:
Excellent, excellent resource for practical guidance on how to troubleshoot a wide variety of problems on Red Hat Linux. I particularly enjoyed how the author made sure to provide solid background and practical examples. I have a lot of experience on Red Hat but still came away with some great practical tools to add to my toolkit. - Amazon Review