Osborne 1 - Investigation and Restoration

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I just got an Osbone 1, in mostly-working-condition. Let's have a look at it.

Teardown

I bought this from a seller on the local used item website, and while it's very yellowed in large swaths, it does appear to work! It was demoed to me working, so I at least …

Category: retrocomputing Tags:

Snippet - RPi Pico GDB how to

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The Raspberry Pi Pico supports on-chip-debugging using another Pico, making it possibly the cheapest embedded development kit with native GDB support.

Things you'll need

  • 1x Raspberry Pi Pico - as the Device Under Test (DUT)
    • This will need, at minimum, the debug pins and 5V (VSYS, #39) pins with headers, A …
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oVirt Node upgrade fails on "Stop services"

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oVirt node upgrade is failing after the "Stop services" step? It's probably a simple fix - /var might be running out of space. Read on to confirm with me.

My Scenario

I have multiple hosts which I have upgraded multiple times throughout oVirt's 4.4 and 4.5 lifecycle so far …

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Restore vProtect Server from backup

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I needed to migrate my vProtect server from CentOS 7 to something EL8 based. As there's no good way to in-place upgrade, I needed to "restore" the vProtect server installation on to a new install.

My Scenario

  • 1x "old" CentOS 7 vProtect 4.3.x server
  • 1x "new" RHEL 8 …
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Convert Debian install from GPT to MBR

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I had to replace the hardware of a server that was booting in UEFI mode with a board that only supported legacy booting, so I also needed to convert the system back to MBR.

My Scenario

This machine was previously booting in UEFI mode happily, until the motherboard failed. I …

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Epson HX-20 - TF-20 Startup disk creation

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The EPSON HX-20 sold with an optional add-on, a dual Floppy unit, that turns out to need it's own boot disk. I don't have one, so let's make one using the disks in the unit and a bog standard 486 PC.

Intro

The …

Category: retrocomputing Tags:

Thinkpad X220 - Shrink the ME Region

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Warning

This document was written many years ago, and the nature of Open Source projects like me_cleaner means that options may change in name and or in function …

Category: hacking Tags:

Thinkpad X220 - Coreboot and ME removal

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Warning

This document was written many years ago, and the nature of Open Source projects like coreboot means that options may change in name and or in function. The rest of the guide (extracting and flashing …

Category: hacking Tags:

DIS on a Mazda3 BKs2

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Introduction

Background

I have a 2006 Mazda 3. It's a nice car, but the more I learnt about the 3 I get ever so slightly more annoyed with Mazda Australia. There's multiple things that the car "supports" but wasn't sold …

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