···

       
6
       
6
       
 
       


     

       
7
       
7
       
 
       
<title>Booting from a USB Drive</title>

     

       
8
       
8
       
 
       


     

       
9
       
9
       
-
       
<para>For systems without CD drive, the NixOS livecd can be booted from

     

       
10
       
10
       
-
       
a usb stick. For non-UEFI installations,

     

       
9
       
9
       
+
       
<para>For systems without CD drive, the NixOS live CD can be booted from

     

       
10
       
10
       
+
       
a USB stick. For non-UEFI installations,

     

       
11
       
11
       
 
       
<link xlink:href="http://unetbootin.sourceforge.net/">unetbootin</link>

     

       
12
       
12
       
 
       
will work. For UEFI installations, you should mount the ISO, copy its contents

     

       
13
       
13
       
 
       
verbatim to your drive, then either:

     

···

       
30
       
30
       
 
       
  #   * COM32 entries (chainload, reboot, poweroff) are not recognized. They

     

       
31
       
31
       
 
       
  #     result in incorrect boot entries.

     

       
32
       
32
       
 
       


     

       
33
       
33
       
-
       
  baseIsolinuxCfg =

     

       
34
       
34
       
-
       
    ''

     

       
33
       
33
       
+
       
  baseIsolinuxCfg = ''

     

       
35
       
34
       
 
       
    SERIAL 0 38400

     

       
36
       
35
       
 
       
    TIMEOUT ${builtins.toString syslinuxTimeout}

     

       
37
       
36
       
 
       
    UI vesamenu.c32

     
···

       
44
       
43
       
 
       
    LINUX /boot/bzImage

     

       
45
       
44
       
 
       
    APPEND init=${config.system.build.toplevel}/init ${toString config.boot.kernelParams}

     

       
46
       
45
       
 
       
    INITRD /boot/initrd

     

       
47
       
47
       
-
       
    '';

     

       
46
       
46
       
+
       
  '';

     

       
48
       
47
       
 
       


     

       
49
       
48
       
 
       
  isolinuxMemtest86Entry = ''

     

       
50
       
49
       
 
       
    LABEL memtest

     
···

       
55
       
54
       
 
       


     

       
56
       
55
       
 
       
  isolinuxCfg = baseIsolinuxCfg + (optionalString config.boot.loader.grub.memtest86.enable isolinuxMemtest86Entry);

     

       
57
       
56
       
 
       


     

       
58
       
58
       
-
       
  # The efi boot image

     

       
57
       
57
       
+
       
  # The EFI boot image.

     

       
59
       
58
       
 
       
  efiDir = pkgs.runCommand "efi-directory" {} ''

     

       
60
       
59
       
 
       
    mkdir -p $out/EFI/boot

     

       
61
       
60
       
 
       
    cp -v ${pkgs.gummiboot}/lib/gummiboot/gummiboot${targetArch}.efi $out/EFI/boot/boot${targetArch}.efi

     

       
62
       
61
       
 
       
    mkdir -p $out/loader/entries

     

       
63
       
63
       
-
       
    echo "title NixOS LiveCD" > $out/loader/entries/nixos-livecd.conf

     

       
62
       
62
       
+
       
    echo "title NixOS Live CD" > $out/loader/entries/nixos-livecd.conf

     

       
64
       
63
       
 
       
    echo "linux /boot/bzImage" >> $out/loader/entries/nixos-livecd.conf

     

       
65
       
64
       
 
       
    echo "initrd /boot/initrd" >> $out/loader/entries/nixos-livecd.conf

     

       
66
       
65
       
 
       
    echo "options init=${config.system.build.toplevel}/init ${toString config.boot.kernelParams}" >> $out/loader/entries/nixos-livecd.conf

     
···

       
232
       
231
       
 
       
      [ "root=LABEL=${config.isoImage.volumeID}"

     

       
233
       
232
       
 
       
        "boot.shell_on_fail"

     

       
234
       
233
       
 
       
        "nomodeset"

     

       
235
       
235
       
-
       
        "systemd.log_level=debug"

     

       
236
       
234
       
 
       
      ];

     

       
237
       
235
       
 
       


     

       
238
       
236
       
 
       
    fileSystems."/" =

     
···

       
271
       
269
       
 
       
      };

     

       
272
       
270
       
 
       


     

       
273
       
271
       
 
       
    boot.initrd.availableKernelModules = [ "squashfs" "iso9660" "usb-storage" ];

     

       
272
       
272
       
+
       


     

       
273
       
273
       
+
       
    boot.blacklistedKernelModules = [ "nouveau" ];

     

       
274
       
274
       
 
       


     

       
275
       
275
       
 
       
    boot.initrd.kernelModules = [ "loop" ];

     

       
276
       
276