Erinn Looney-Triggs erinn.looneytriggs at gmail.com
Wed Jul 18 14:51:44 CDT 2012

On 07/17/2012 09:03 PM, Steven Dick wrote:
> On Wed, Jul 18, 2012 at 12:50 AM, Steven Dick <kg4ydw at gmail.com
> <mailto:kg4ydw at gmail.com>> wrote:
>     But what you really need (with or without iPXE) is syslinux (aka
>     pxelinux) or some other bootloader (grub) that can actually load an
>     operating system.
> Let me clarify this somewhat.
> I said you don't _need_ iPXE except to use http instead of tftp.
> This isn't entirely true.  I have found that syslinux has some bugs in
> it, especially relating to loading very large images, and using iPXE
> seems to cover that up, as iPXE uses its own loader (with syslinux on
> top) that does a better job.  (But this only matters for booting memdisk
> with large ISOs, syslinux alone should be fine for just a kernel and an
> initrd.)
> It is possible that iPXE similarly covers up UEFI problems with syslinux.
> I have booted UEFI machines using ipxe + syslinux, but not syslinux
> alone.  (Just haven't tried.)  Also, the bugs I am seeing might be in
> bios, rather than syslinux itself, as syslinux would probably be using
> the bios pxe/tftp code to do its loading, or alternately, it would use
> ipxe's http or tftp code, and syslinux really wouldn't know the difference.

Ok thanks for the clarification. It looks to me likely at this point
that there are either issues with the BIOS PXE part or the grub/kernel
part and iPXE may fix it all. Right now I am travelling so I will be
testing this out next week, will post back to the list just for
completeness' sake.


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