In this post we'll configure network booting through PXE.  PXE stands for Preboot eXecution Environment and has been available for Network Devices (or NIC's) for some time.  Such a network boot setup has many uses in particular in OS setup and deployment.  In this post I'll introduce the steps to quickly set one up.  [...]

So you've lost the password to the root account.  Worst, you've had a boot password and it was the same.  Here are some instructions on how to get back into your system:

This post is designed as a blind test, meaning its sole purpose is for testing and learning LVM functionality.  In this process we will work with an existing LVM that contains live data to grow, shrink and move it's contents around.  Before we do anything, a disclaimer is in order:
DISCLAIMER: Aside from the disclaimer [...]

 
It may become necessary to recover an LVM in case either a backup /etc/lvm/backup/<VOLGROUP> is not available or becomes lost or other conditions arise causing loss of system volume data.  Here are the recovery steps I took to recover previously lost data without either a backup and using only a few open source tools: