[CentOS] PXE vmlinuz kernel doesn't recognize memory in Intel NUC?

Fri Mar 17 17:35:54 UTC 2017
Locane <locane at gmail.com>

Bruce, thanks for the reply - I don't think so.  The image works fine on
every other supermicro server we've ever used, and continues to do so,
except for the NUC.

Using the mem= kernel parameter gets the NUC further in the boot process,
but then it complains about the squashfs error (for the same working image
everywhere else).  The mem= kernel parameter also breaks other
normally-working systems, so that's why I'm trying to either:

1. Fix the mem= kernel parameter, somehow
2. Get the vmlinuz initial kernel to recognize the memory in the NUC,

On Wed, Mar 15, 2017 at 10:26 PM, Bruce Ferrell <bferrell at baywinds.org>

> On 03/15/2017 06:08 PM, Locane wrote:
>> Hello all!  I'm hoping someone can help.  I'm having 2 issues; first:
>> When trying to load a CentOS LiveCD via PXE on an Intel NUC (NUC6CAY), I
>> get:
>> "Not enough memory to load specified image".  The image is 1.1 gigs, and
>> there is 16 gigs of memory in the NUC.
>> To combat this, I found this forum post
>> <https://www.centos.org/forums/viewtopic.php?t=1398> which suggested
>> using
>> the "mem=" kernel parameter to manually set it.
>> The next problem I get is one of two things:
>> On a normal working system, I get the dots loading in PXE, then it freezes
>> on "ready." forever
>> On the NUC, I get a sqaushfs crash saying that the image is unusable.
>> My questions are:
>> Has anyone successfully used the "mem=" parameter in a PXE environment?
>> I wasn't even aware that drivers were necessary for a kernel image to read
>> RAM; I'd thought this was something that was just inherent.  Does the
>> CentOS PXE kernel need to be updated?
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>> I do a lot of PXE at home.  Is it possible the tftp of the image is
> failing somehow?  I had problems with image size and had to switch to:
> http://www.kernel.org/pub/software/network/tftp/
> found in tftp-server
> I've included my pxelinux.cfg/default for Centos 6.4 below:
> # Centos 6.4
>   label centos6
>   kernel centos/6.4/64/vmlinuz
>   append initrd=centos/6.4/64/initrd.img ramdisk_size=100000 text ks=
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