JarenHavell.com

Expand raidz pool by adding a disk – ZFS expansion in Proxmox 9

Proxmox 9 just dropped. It now has support for ZFS 2.3.3. ZFS has had raidz expansion available since ZFS 2.3. This guide shows you how to add a disk to an existing ZFS pool.

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Kindle Fire 7 – 9th Gen (2019, mustang): xyz Root, TWRP, install Lineage 14.1

XYZ from XDA developers was kind enough to put together a new root package and tutorial for the Kindle Fire 7 9th generation (2019 edition). All credit to xyz of XDA Developers for making this all possible.

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Installing Retropi and Pi Hole, using a Linux computer

In this video, I explain how to get a Raspberry Pi 3 to pull double duty as an entertainment device and some added utility by running both RetroPie for gaming and Pi-hole for advertisement filtering — all from a Linux (Debian 10) computer.

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Unlock and Root: Loading a custom ROM on Kindle Fire 7 (5th gen)

I bought a $35 Kindle Fire 7 a few years ago. 2019 is the year to "root it" and make it mine. Loading a custom ROM on a Kindle Fire 7 (5th gen) in 2019.

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Windows password reset tool

This bootable USB tool allows you to reset the local administrator password on a Windows system. Easy to use and very helpful for that old computer that has been in the closet for 10 years.

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One year with Linux

All the things I learned using Debian at home for a year. About a year ago I started using Linux as my primary operating system — here's what I found.

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Cloning a Debian system

Any computer system can be "cloned" using a variety of methods. Clonezilla is my preferred method. This post is the companion notes to my video on cloning and upgrading a Debian system with Clonezilla and Gparted.

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SPI fast Display library is good, KEDEI 3.5 is Garbage.

Video notes for SPI display install on a Raspberry Pi, "liveblog" style. A roller coaster of excitement, frustration, and many lessons learned about small displays on the Pi.

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Combine pdf files

Sometimes you have multiple PDF files you want to put together into one file. If you have Linux, it couldn't be easier using the convert command.

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Copy a file over SSH using SCP

Your file is on one Linux machine. You want it somewhere else. SSH to the machine and use the SCP command (Secure Copy Protocol) to copy it to your local machine.

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Dd – writing an img or iso to a disk

The dd command is a powerful Linux tool for writing disk images and ISO files directly to a drive. A quick guide on how to use it safely.

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Screenfetch and Neofetch

Screenfetch and Neofetch are command-line tools that display system information alongside your distro's ASCII art logo. A quick look at both.

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Hey Linux, What wireless card do I have?

A quick guide on how to identify your wireless network card on a Linux system using command-line tools.

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Install Chrome on Debian

How to install Google Chrome on Debian. Chrome is not in the default Debian repositories, so here's how to get it installed manually.

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Install Sudo (on Debian)

Debian doesn't always come with sudo installed. Here's how to install it and add your user to the sudoers group.

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SCCM Site Reset

How to perform an SCCM site reset. Useful when your Configuration Manager site is in a bad state and you need to repair it without a full reinstall.

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Remote assistance msra.exe

Windows Remote Assistance (msra.exe) is a built-in tool that lets you invite someone to remotely view or control your computer. A guide on how to use it.

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Light up musical Christmas Card

A DIY light-up musical Christmas card project — wiring up LEDs and a small speaker to make a fun handmade holiday card.

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Server Room Environmental Monitoring - Light and Temperature

Building a simple environmental monitoring system for a server room to track light levels and temperature, and alert when conditions go out of range.

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