Install Scibian 9 from scibian.org

Install Debian

Download the Debian 9.13 ISO

https://cdimage.debian.org/cdimage/archive/9.13.0/amd64/iso-cd/debian-9.13.0-amd64-netinst.iso

Copy the ISO on a USB drive

Plug the USB drive and identify the associated device (e.g. /dev/sda), then use cp to install the image on it :
```
$ sudo cp debian-9.13.0-amd64-netinst.iso /dev/sda
```
Warning this action will prevent later access to the data already present on the device. Check the device name carefully.
Boot the PC on the USB drive and start the installation

This documentation does not cover all the details of the installation process. If you are not comfortable with the partitioning tool, choose the assisted partitionning on a whole disk, with everything in one partition.
At step “Configure the package manager”

Choose “Manual” and fill the following fields :
- Hostname of Debian archive mirror : scibian.org
- Directory of Debian archive mirror : /repos/scibian9
At step “Software selection”

Get in console mode by pressing <Ctrl+Alt+F2> then press <Enter> and input the following commands :
```
# wget -O- http://scibian.org/repos/scibian.org.pub | chroot /target apt-key add -
# echo 'APT::Get::AllowUnauthenticated "true";' >/target/etc/apt/apt.conf.d/99unauthenticated
```
Then go back to the installation screen by pressing <Alt+F5>, uncheck all the boxes except “Common system tools”, and continue.
At the end of the installation process, unplug the USB drive, and reboot

Install Scibian

If screen freezes during reboot

Reboot again, and when GRUB menu appears, select “Advanced options for Debian GNU/Linux”, then press <e> to edit the boot parameters.

With the arrow keys, get to the line starting with linux, append nomodeset at the end of this line, and boot by pressing <Ctrl+x>
When prompted for login, login as administrator
Install apt-transport-https
```
# apt install apt-transport-https
```

Edit /etc/apt/sources.list in the following way :

deb https://scibian.org/repos/scibian9 stretch main contrib non-free
deb https://scibian.org/repos/scibian9 stretch-security main contrib non-free
deb https://scibian.org/repos/scibian9 stretch-updates main contrib non-free
deb https://scibian.org/repos/scibian9 scibian9 main contrib non-free

Update apt data
```
# apt update
```

Install Scibian

# apt install scibian-standard scibian-desktop

Configure the nVidia card (if needed)

Install nvidia-detect :
```
# apt install nvidia-detect
```
The execute nvidia-detect and follow its recommendations.
End of the installation

Delete /etc/apt/apt.conf.d/99unauthenticated then update apt data again :
```
# apt update
```
And reboot the PC.