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Keirodev/pair-dual-boot-bluetooth.md

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Created April 20, 2023 13:35
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Pairing bluetooth devices (keyboard or mouse) in dual boot with Linux Ubuntu and Windows 10
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pair-dual-boot-bluetooth.md

1) Pair ALL bluetooth devices in linux (it is to have the files you will need to edit later)

2) Pair ALL bluetooth devices in Windows 10. If you know how, get the MAC address id from your bluethooth keyboard, we will need it later

3) Reboot and go back to Linux

4) Install chntpw package, this is needed to read the registry keys from Wintendo

sudo apt-get install chntpw

5) Mount your Wintendo system drive in Linux and enter to this folder

cd /[MountedDrive]/Windows/System32/config

5) Execute this command inside that folder

chntpw -e SYSTEM

6) In the chntpw raised console, enter in the bluetooth registry keys list like this:

cd \ControlSet001\Services\BTHPORT\Parameters\Keys

7) run ls command to show you a Unique id lists

(...)\Services\BTHPORT\Parameters\Keys> ls
Node has 1 subkeys and 0 values
  key name
  <00f48d9e41aa>

Like this one equivalent to 00:F4:8D:9E:41:AA

8) Enter in each Unique id folder to search for your MAC address of your bluetooth device in each value name

(...)\Services\BTHPORT\Parameters\Keys> cd 00f48d9e41aa
(...)\BTHPORT\Parameters\Keys\00f48d9e41aa> ls
Node has 0 subkeys and 3 values
  size     type              value name             [value if type DWORD]
    16  3 REG_BINARY         <34885dd82480> <- This is our keyboard
    16  3 REG_BINARY         <34885db5f481>

9) Get the hex code (that we will call friendly: the pairing key) from the keyboard MAC address value

(...)\BTHPORT\Parameters\Keys\00f48d9e41aa> hex 34885dd82480
Value <34885dd82480> of type REG_BINARY (3), data length 16 [0x10]
:00000  BE 7F B1 99 23 29 D5 B2 6A E2 F6 96 2E FD 16 8A ....#)..j.......

10) So... we will copy the pairing key that use Wintendo to pair your device: BE7FB1992329D5B26AE2F6962EFD168A We will use this pairing key to make Linux pair our keyboard, without re-pairing again. We will use now de Unique Id, the MAC Address and edit this file in your Linux drive:

sudo nano /var/lib/bluetooth/[Unique ID]/[Mac Address]/info

sudo nano /var/lib/bluetooth/00\:F4\:8D\:9E\:41\:AA/34\:88\:5d\:d8\:24\:80/info

11) In the info file go to the [LinkKey] section and replace the Key value with the pairing key

Key=BE7FB1992329D5B26AE2F6962EFD168A

12) Save and restart the bluetooth service in Linux and you are ready to go

sudo service bluetooth restart
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