GRUB2 password protection, secure Ubuntu boot loader, prevent unauthorised boot menu changes, enhance system security. In previous posts in this blog I have explained how to protect the system by disk encryption with a password retrial from the TPM. In another post, I have given some wider overview of system security and protection, but there…
I encountered an intriguing issue recently after replacing my motherboard. Some block devices underwent a change in their order, causing /dev/sda to appear as /dev/sdy due to a modification in the PCI-e enumeration. This change, though seemingly insignificant, led to an unexpected consequence. Since the disk was subject to a specific mdadm filter, its altered…
I have recently acquired a new computer without an operating system, and I wish to install Oracle Enterprise Linux version 9.1 on it. The ISO file required for the installation is located on an NFS file server, accessible through a network infrastructure. The hardware boots using uEFI, and I have a USB disk-on-key containing Ubuntu…
Hi. As some know now, I have an article about encrypting and protecting Linux – while using TPM to prevent the need to enter the encryption passphrase every time the system boots. This is one of the most popular article in this blog, and for a very good reason – people want their computers (especially…
This blog is my extended memory, and as such, its task is to remind me things I tend to forget, saving me the time required to search them again. So here is another one of these things. The network settings syntax for RHEL8/OEL8 or any of their compatible systems, when you want to pass these…
There are two topics I would like to describe here, for later reference (by myself, of course. This blog is my extended memory). The first is about how to create a bootable ISO out of RHEL extracted ISO, and the other is about how to download only specific update, or make your own RHEL updates…
