...

dar1/2_prepare_computer/1_prepare_bios.md

@@ -0,0 +1,35 @@
+
+
+## boot from USB
+
+Most often a computer does not boot from USB but from local HDD or SSD (disk), to change this you need to go into the BIOS
+
+Typically to go in bios you need to reboot your computer and press F1 or del button while booting, don't mind keep on pushing those 2 buttons till you see a screen like the following
+
+![](img/bios1.png)
+
+This shows the computer access the bios.
+
+Look for a screen which lets you configure the boot options
+
+
+![](img/bios_boot.png)
+
+configure the screen to be something like
+
+
+![](img/bios_boot2.png)
+
+make sure the USB key, disk ... all get priority on internal HDD,SSD or NVME disk.
+
+this will make sure we can boot from a USDB disk.
+
+If you see something like above it means the computer will boot from USB first.
+
+
+
+![](img/bios_save.png)
+
+Don't forget to save your changes, see screenshot and now the computer will reboot.
+
+

dar1/2_prepare_computer/2_empty_disk.md

@@ -0,0 +1,54 @@
+# Empty disk
+
+## prepare rescue USB stick
+
+We use system rescue procedure to empty the disk, its anyhow very handy to have a USB stick with this rescue OS.
+
+see https://www.system-rescue.org/Download/
+
+see https://fastly-cdn.system-rescue.org/releases/11.00/systemrescue-11.00-amd64.iso
+
+![](img/balena.png)
+
+we use balena etcher tool to burn the ISO onto a USB stick, its a very straight forward process to burn the iso on a USB stick.
+
+the tool can be found on https://etcher.balena.io/
+
+## now boot computer with the USB stick
+
+make sure bios has been prepared to boot from USB see [here](1_prepare_bios.md)
+
+![](img/usb_rescue.png)
+
+after booting you should see something like this
+
+Select first item
+
+![](img/rescue2.png)
+
+check which disk to erase do
+
+```bash
+sfdisk -l
+```
+
+![](img/sfdisk.png)
+
+in this case we see /dev/sda... which is the USB stick we are booting from and /dev/nvme0n1 which is the internal nvme disk, this is the one we will have to empty
+
+## empty the disk
+
+Be careful following command will erase your disk completely !!!
+
+![](img/rescue_erase.png)
+
+```bash
+wipefs -a /dev/nvme0n1
+```
+
+Now your disk is empty, go to next step to boot Zero-OS
+
+
+
+
+