Every few months I get an email from Yogesh Babar, a Red Hat senior technical support engineer, telling me that he has written a document, exploring some Linux technology, that he would like to get published on the Red Hat Customer portal. For me, it's a pleasure to work on his content because he takes the time to try everything out and really dig into how it works. I just need to add a bit of polish and put it out on the portal..
Over time, Yogesh has generated an impressive list of Tech briefs. He wrote a Tech Brief called Understanding How Kdump Works that covers how to use and configure the kdump service. In Understanding Linux Process States, Yogesh covers how processes work in Linux and how processes are started in different run states. His first Tech Brief to touch secure boot features in RHEL 7 was UEFI Secure Boot in Red Hat Enterprise Linux.
In October, 2015, Yogesh produced a Tech Brief that focused on GRUB 2, but also covering the original GRUB (GRUB Legacy) and UEFI issues relating to the new GRUB boot process. If you are interested in the topic, I suggest go to the article Booting with GRUB Legacy, GRUB 2, and UEFI and download the attached PDF Tech Brief. If you are new to GRUB 2 (which was added to Red Hat Enterprise Linux for RHEL 7), this will give you insights into how the new boot process works and how you can configure it for your own needs.
Yogesh's latest Tech Brief covers the parted partitioning tool. For old-school Linux administrators, who partition with fdisk or cfdisk, parted offers some significant advancements. Primarily, parted lets you create GPT partitions, which allow partitioning of much larger disks with the potential for many more partitions. To find the parted Tech Brief, visit the Partitioning disks with parted article and download the attached PDF.