CRUX Boot fails from Ubuntu Grub2

Milton Smith miltonsj at
Sun Jan 29 00:18:18 UTC 2017

Dan, it⁣ sounds like you have one hell of a setup ��. I would love to boot with Grub legacy because I hate Grub 2. Can you give me some pointers on how to make that happen? Would I need Gentoo? I know most distros now have gone to Grub 2. Thanks in advance...

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On Jan 28, 2017, 9:50 AM, at 9:50 AM, Dan Kociela <dkociela at> wrote:
>Keeping things simple is a matter of personal preference. On my desktop
>computer, I have Crux, SourceMage, Void, Gentoo, Arch, and Windows10 on
>disks, a SSD and 2 HDD's (and I've tried many others). They are all
>from Grub Legacy (Grub1) which is located on the Gentoo distro. I have
>never had a problem booting anything. I have never used a separate boot
>partition. The 2 HDD's have at least 10 different partitions. Four of
>Linux distros have custom kernels, I've never used "make
>If you plan on re-partitioning in the future (maybe to try another
>id'ing your partitions with UUID probably makes sense. Device names can
>change, UUID's do not. That being said, I have always used device
>Good luck, glad you got it installed. Crux is my favorite.
>On Fri, Jan 27, 2017 at 11:53 AM, Milton Smith <miltonsj at>
>> Ok Steve. I just installed it again following your instructions. It
>> worked! I was not doing 'make firmware_install' when compiling the
>> I am gonna keep it simple from now on. One os on each disk! I am
>> reformatting my Ubuntu drive now. No more of that! Thanks again.
>> Sent from BlueMail <>
>> On Jan 27, 2017, at 12:04 PM, Steve Volumetric
><volumetricsteve at>
>> wrote:
>>> It's not a problem if you configure fstab correctly.  I never do
>>> all of my crux machines are one physical drive and one partition per
>>> system, I don't even use swap.
>>> I just like to keep things clean and simple.
>>> On Fri, Jan 27, 2017 at 12:58 PM, Milton Smith <miltonsj at>
>>> wrote:
>>>> I am using gmail in the web browser, I must have hit a button
>>>> accidentally to enlarge the font.. I am sorry about that. I think I
>>>> got it fixed now.  I don't see a reply all button. I thought I was
>>>> all my messages to the group. �� I am CC'ing this message now.
>>>> One last question: Are you using a separate boot partition on your
>>>> for your CRUX installation? I usually dont, and I am wondering it
>that may
>>>> cause a problem.
>>>> On Fri, Jan 27, 2017 at 11:51 AM, Steve Volumetric <
>>>> volumetricsteve at> wrote:
>>>>> Also your font in your last few emails is gigantic, is that
>>>>> intentional?  I've been CC'ing the crux list on my replies because
>>>>> not replying-to-all and I think the rest of the list may be able
>to help
>>>>> you better.  Good luck.  I'll help if I can.
>>>>> On Fri, Jan 27, 2017 at 12:49 PM, Milton Smith
><miltonsj at>
>>>>> wrote:
>>>>>> Ok. Steve. I will follow your steps exactly and see what happens.
>>>>>> Thanks for the help, and I will post back here later this evening
>>>>>> tomorrow and let you know what happens. Thanks!
>>>>>> On Fri, Jan 27, 2017 at 11:43 AM, Steve Volumetric <
>>>>>> volumetricsteve at> wrote:
>>>>>>> If your goal is to dual boot, i might not be able to help you. 
>>>>>>> you're trying to just set up a bare-metal crux system, your grub
>>>>>>> process must be wonky, though, all I do is:
>>>>>>> (appropriate fstab changes)
>>>>>>> grub-install /dev/sda
>>>>>>> (compile kernel, make modules_install, make firmware_install, cp
>>>>>>> /boot/, cp arch/x86/boot/bzimage /boot/vmlinuz-1)
>>>>>>> grub-mkconfig > /boot/grub/grub.cfg
>>>>>>> reboot
>>>>>>> I don't think I'm missing anything critical there as far as just
>>>>>>> being able to boot is concerned...
>>>>>>> On Fri, Jan 27, 2017 at 12:07 PM, Milton Smith
><miltonsj at>
>>>>>>> wrote:
>>>>>>>> I am using grub in Ubuntu because when I install grub in CRUX,
>>>>>>>> reboot to a grub rescue prompt and not a grub menu. It is very
>>>>>>>> inconvenient. The UUID in stab just takes the place of where
>you put
>>>>>>>> /dev/sdb, etc. Does that help clear it up? Thanks
>>>>>>>> On Fri, Jan 27, 2017 at 10:56 AM, Steve Volumetric <
>>>>>>>> volumetricsteve at> wrote:
>>>>>>>>> How or more importantly why are you using Ubuntu's grub2 in
>>>>>>>>> Is it an EFI system?  I'm not sure what you mean by UUID in
>>>>>>>>> context of fstab, I almost always have something like:
>>>>>>>>> /dev/sdb1   /    ext4   defaults,noatime(or whatever)   0   1
>>>>>>>>> I wouldn't recommend using utilities for a different
>>>>>>>>> crux comes with grub2.
>>>>>>>>> -vsteve
>>>>>>>>> On Fri, Jan 27, 2017 at 11:42 AM, Milton Smith
><miltonsj at>
>>>>>>>>> wrote:
>>>>>>>>>> I am trying to boot from the Grub that comes standard with an
>>>>>>>>>> Ubuntu installation. I am installing on bare metal. I did
>compile my root
>>>>>>>>>> filesystem into the kernel. I am using ext4. I did setup
>fstab with the
>>>>>>>>>> uuid of the CRUX partition. Sorry for the confusion.
>>>>>>>>>> Sent from BlueMail <>
>>>>>>>>>> On Jan 27, 2017, at 9:55 AM, Steve Volumetric <
>>>>>>>>>> volumetricsteve at> wrote:
>>>>>>>>>>> I have a few questions, but first, what is "ubuntu grub2"? 
>>>>>>>>>>> you installing on a VM or bare metal?
>>>>>>>>>>> Did you compile your root file system into your kernel? 
>>>>>>>>>>> file system are you using on your root file system?  Did you
>set up fstab?
>>>>>>>>>>> -vsteve
>>>>>>>>>>> On Fri, Jan 27, 2017 at 10:46 AM, Milton Smith <
>>>>>>>>>>> miltonsj at> wrote:
>>>>>>>>>>>> Everytime I try to boot CRUX from Ubuntu's Grub2 it fails
>with a
>>>>>>>>>>>> kernel panic.
>>>>>>>>>>>> It gives me the error message, " unable to mount root
>>>>>>>>>>>> on unknown block (0,0)".
>>>>>>>>>>>> Can someone help me with this? Thanks!
>>>>>>>>>>>> Sent from BlueMail <>
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>>>>>> Milton Smith
>>>> --
>>>> Milton Smith
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