[Nix-dev] Nix OS installation problems - Where's the hard drive?

[Joseph Joe]

I am still a bit confused. I added the following lines to
/etc/nixos/configuration.nix

nixpkgs.config.packageOverrides = pkgs:
  { linux_3_4 = pkgs.linux_3_4.override {
      extraConfig =
        ''
          CONFIG_SCSI_SAS_ATA y
        '';
    };
  };

Then I saved the file and entered the command

# nixos-rebuild switch

After the operation was finished, I entered

# fdisk -l

But the hard drive is still not recognized.

This doesn't work because I am inside the live-usb. But, I can make a
custom image in the live-boot with this changed configuration file. This
image will have the configuration I want. Is that correct?
Also, how would I put the Ubuntu kernel onto the liveUSB?


On Sun, Oct 5, 2014 at 3:49 AM, Alexander Zubkov <green at msu.ru> wrote:

> I think, you can also try to build custom bootable image with changed
> kernel:
> https://nixos.org/wiki/Creating_a_NixOS_live_CD
> There is also one more option to change kernel compilation parameters,
> described in wiki:
> https://nixos.org/wiki/How_to_tweak_Linux_kernel_config_options
> This variant is not binded to kernel version.
>
>
> On 10/05/2014 11:37 AM, Wout Mertens wrote:
>
>> Hi,
>>
>> No, the live USB doesn't store changes I'm afraid. What you can do is put
>> the Ubuntu kernel on the liveUSB, and boot using that instead of the
>> regular one. That should work, I don't think there are any extra-special
>> kernel features that NixOS needs.
>>
>> Then you can install NixOS on your HD, but you need the kernel to have the
>> SAS support.
>>
>> To change the Linux config on NixOS, you need to edit configuration.nix:
>> http://nixos.org/nixos/manual/#sec-kernel-config
>> Just put "CONFIG_SCSI_SAS_ATA y" in there.
>>
>> In the mean time, also open an issue requesting the kernel to have that
>> configuration by default.
>>
>> Wout.
>>
>> On Sun, Oct 5, 2014 at 3:02 AM, Joseph Joe <joej at reed.edu> wrote:
>>
>>  Would I be able to recompile the kernel while booting from the NixOS
>>> live-usb and would these changes be permanent on the live-usb?
>>>
>>> Would I just type in these commands (src:
>>> http://www.linux.com/learn/tutorials/305766-recompile-
>>> your-kernel-for-a-perfect-fit
>>> )?
>>>
>>> cd /usr/src/linux
>>> make clean
>>> make
>>> make modules_install
>>> make install
>>> reboot
>>>
>>> Then, will the appropriate kernel option be set so that my hard drive
>>> will
>>> be detected?
>>>
>>> Joseph Joe
>>>
>>>
>>>
>>>
>>
>
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