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reduce minimum RAM requirements

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This commit is contained in:
Jörg Thalheim 2023-05-07 21:44:20 +02:00
parent e855c9b4b9
commit 340303d82b
2 changed files with 4 additions and 4 deletions
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4
README.md
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@ -14,7 +14,7 @@ Kexec is a mechanism in Linux to load a new kernel from a running Linux to
replace the current kernel. This is useful for booting the Nixos installer from
existing Linux distributions, such as server provider that do not offer a NixOS
option. After running kexec, the NixOS installer exists only in memory. At the
time of writing, this requires at least 2.5GB of physical RAM (swap does not
time of writing, this requires at least 1.5GB of physical RAM (swap does not
count) in the system. If not enough RAM is available, the initrd cannot be
loaded. Because the NixOS runs only in RAM, users can reformat all the system's
discs to prepare for a new NixOS installation.
@ -22,7 +22,7 @@ discs to prepare for a new NixOS installation.
It can be booted as follows by running these commands as root:
```
curl -L https://github.com/nix-community/nixos-images/releases/download/nixos-unstable/nixos-kexec-installer-x86_64-linux.tar.gz | tar -xzf- -C /root
curl -L https://github.com/nix-community/nixos-images/releases/download/nixos-unstable/nixos-kexec-installer-noninteractive-x86_64-linux.tar.gz | tar -xzf- -C /root
/root/kexec/run
```

2
nix/kexec-installer/test.nix
View file

@ -21,7 +21,7 @@ in makeTest' {
(modulesPath + "/profiles/minimal.nix")
];
virtualisation.memorySize = 2048;
virtualisation.memorySize = 1024 + 512;
virtualisation.diskSize = 4 * 1024;
virtualisation.useBootLoader = true;
virtualisation.useEFIBoot = true;