32 lines
1.4 KiB
Markdown
32 lines
1.4 KiB
Markdown
## Zero install
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The Zero-OS is delivered to the 3Nodes over the internet network (network boot) and does not need to be installed.
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### 3Node Install
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1. Deploy a computer
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2. Configure a farm on the TFGrid explorer
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3. Download the bootloader and put on a USB stick or configure a network boot device
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4. Power on the computer and connect to the internet
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5. Boot! The computer will automatically download the components of the operating system (Zero-OS)
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The actual bootloader is very small, it brings up the network interface of your computer and queries TFGrid for the remainder of the boot files needed.
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The operating system is not installed on any local storage medium (hard disk, ssd), Zero-OS is stateless.
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The mechanism to allow this to work in a safe and efficient manner is an innovation called our container virtual filesystem.
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This is explained in more detail [in our SDK manual](https://library.threefold.me/info/manual/#/booting_node).
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### Process
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- optionally: configure booting from secure BIOS
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- optionally: install signing certificate in the BIOS, to make sure that only the right bootloader can be started
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- the bootloader (ISO, PXE, USB, ...) get's downloaded from Internet (TFGrid CDN or private deployment)
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- core-0 (the first boot process) starts, self verification happens
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- the metadata for the the required software modules is downloaded and checked against signature and hashes
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- the core-0 zero_image service
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