Differences

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--- refurbishing [2021/06/20 02:09] – fixed formatting user
+++ refurbishing [2023/04/30 00:54] (current) – [OS] user
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 ===== Update BIOS =====
-be sure your BIOS is from 2019 or later to ensure you are not vulnerable to a critical security vulnerability
+Be sure the BIOS is from 2019 or later to ensure you are not vulnerable to a critical security vulnerability. Windows update can update the BIOS in some cases.
 ===== CMOS Battery Check =====
-A CR2032 3 volt lithium battery has about 3.3V new. They last around 5-7 years. When the voltage drops to 2.8-2.7V it is considered dead.
+A CR2032 3 volt lithium battery has about 3.3V new. They last around 5-7 years. When the voltage drops to 2.8-2.7V it is considered dead. Symptoms of a failing battery are error messages at boot time.
 Intel NUCs have the date of manufacture on the bottom place, so it is easy to check the age of the CMOS battery, essentially a CR2032 wrapped in plastic, connected to a small electrical connector.
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 It is challenging to test the voltage with a multimeter, requiring removing the motherboard and using some very fine probes with your multimeter.
-The simpler method is to download and live boot the latest Ubuntu distribution and run "sensors". This should give you the current voltage read from the battery.
+Some sources say to download and live boot the latest Ubuntu distribution and run "sensors". This should give you the current voltage read from the battery. However in my testing, the CMOS battery voltage is not included. Therefore my best recommendation is to ''cat /proc/driver/rtc'' which will give you a "batt_status : okay" at least.
 ===== Upgrades and Replacements =====
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 When giving away a Windows NUC, I usually do a full reset and leave it at the initial Windows configuration screen. Pressing F-10 from this screen opens and command prompt, allowing running the ''shutdown /s /t0'' command.
-For a Linux NUC, I generally due a full re-install and set it to login automatically. I leave the credentials in a text note on the "desktop".
+For a Linux NUC, I generally do a full re-install and set it to login automatically. I leave the credentials in a text note on the "desktop".
+NOTE [[https://www.microsoft.com/en-us/windows/windows-11-specifications|Windows 11 requirements]] are greater:
+  * Processor with 2 or more cores
+  * Graphics: Compatible with DirectX 12 or later with WDDM 2.0 driver
+  * 64 GB or larger storage device
+  * 4GB RAM
+  * TPM v.2.0
+  * Windows 11 Home edition requires internet connectivity and a Microsoft account to complete device setup on first use
+  * Display: High definition (720p) display that is greater than 9” diagonally, 8 bits per color channel