Fdisk is undoubtedly the most favorite disk partitioning tool for most linux savy peope. However fdisk has limitations when it comes to disk with space more than 2T. Redhat recommends parted now, starting from RHEL6. fdisk doesnt understand GUID partition table (GPT) and it is not suited for disk bigger than 2T. You will have to use a more advanced tool “parted” for that.

Let us see how a new 3T disk can be partitioned using parted command. I will be showing just 1 partition here, taking up all space rest can be done the same way. Normally, the disk will be labelled msdos, and you need to label it as GPT.

The list command will show you the current disks and their details.

Recently I ordered a Hetzner server for one of our clients. The server had two 3TB disks. Hetzner provides a command line installation of the desired OS once we login to their server. As such, I logged in to the server and installed Centos6 by executing “installimage” option as suggested by Hetzner.

After installing OS and rebooting the server, I noticed that the 3T disk is not showing full space.

If the disk size is greater than 2T you cannot use normal fdisk to create partition...

I was trying to setup a php script to send mail with SMTP Authentication. The script was ready, but when executed in a browser, it displayed the following error.

The problem appears because the php pear package Net_SMTP is not present in the server. You can install it in two way.

After that, execute the script again and...