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  Thread: Winboot failed to load WinPE greater than 600MB on Dell R640
Post: RE: Winboot failed to load WinPE greater than 600M...

A similar issue recently popped up on IRC, when trying to load an initramfs > 1G. It was due to the fact that ipxe can only access memory below 4GB in BIOS mode, and the BIOS will map random stuff ...
simon General 1 2,375 2020-10-23, 10:26
  Thread: CentOS 8 kernel cannot be started from UEFI iPXE
Post: RE: CentOS 8 kernel cannot be started from UEFI iP...

Me neither, just happen to have access to that page ;) I don't want to fullquote it here verbatim, but it doesn't explicitly mention netboot, or iPXE, so there's an off chance that's just another bug ...
simon General 9 4,742 2020-10-14, 14:18
  Thread: CentOS 8 kernel cannot be started from UEFI iPXE
Post: RE: CentOS 8 kernel cannot be started from UEFI iP...

Ah, it's fixed in the most recent kernel releases for 8.2 (kernel-4.18.0-193.13.2.el8_2) and 8.1 (kernel-4.18.0-147.24.2.el8_1), but not yet 8.3 (will be in GA build). The fix was this: https://www.l...
simon General 9 4,742 2020-10-14, 12:46
  Thread: iPXE initializing devices - takes 30 seconds
Post: RE: iPXE initializing devices - takes 30 seconds

This is the slightly less horrible solution I've been using for a while now: Code: diff --git a/src/interface/efi/efi_entropy.c b/src/interface/efi/efi_entropy.c index dca0b6f1..f6e82e2c 100644 --- ...
simon General 2 2,997 2020-10-13, 14:08
  Thread: Passing dhcpd options to kernel command line
Post: RE: Passing dhcpd options to kernel command line

You can address options by their numeric value, i.e. ${190} or ${netX/190}
simon General 4 3,029 2020-10-13, 14:04
  Thread: CentOS 8 kernel cannot be started from UEFI iPXE
Post: RE: CentOS 8 kernel cannot be started from UEFI iP...

Which Version of iPXE are you using? I tested your exact snippet on an Intel NUC5i5RYB in EFI mode and it boots just fine. Since you said you embedded the script into the binary -- did you add a "dhc...
simon General 9 4,742 2020-10-13, 13:59
  Thread: HDD Boot from ipxe.efi loaded via network
Post: RE: HDD Boot from ipxe.efi loaded via network

Progress. If you don't have a FAT32 formatted ESP, it looks like this: Code: ipxe: iPXE> imgload file://dsfg/sdfg ipxe: LOCAL 0x9698bd48 could not enumerate handles: Error 0x7f4de08e (http://ipx...
simon General 3 3,112 2020-08-14, 16:05
  Thread: HDD Boot from ipxe.efi loaded via network
Post: RE: HDD Boot from ipxe.efi loaded via network

Ah, thanks for the hint. According to other threads on EFI, it sounded like there is no way at all to access the local disk if ipxe is loaded via network, instread of the HDD. I tried playing with th...
simon General 3 3,112 2020-08-14, 11:52
  Thread: HDD Boot from ipxe.efi loaded via network
Post: HDD Boot from ipxe.efi loaded via network

So, we have more and more machines running EFI now, and on some of them we need to dualboot a local OS. With PCBIOS this was dead simple, as sanboot worked flawlessly on 99% of machines, and for that ...
simon General 3 3,112 2020-08-13, 10:41
  Thread: iPXE Menu
Post: RE: iPXE Menu

iPXE has nothing to do with the BIOS setup. iPXE can display menus after the BIOS hands over control. This happens through an ipxe script that is either embedded (EMBED=... option) or loaded from the...
simon General 1 2,378 2020-06-05, 09:58
  Thread: iPXE Build Problem
Post: RE: iPXE Build Problem

Seems to be a known problem with gcc 10: https://lists.ipxe.org/pipermail/ipxe-de...07050.html You could try passing NO_WERROR=1 or maybe just switch to an older gcc.
simon General 1 1,219 2020-06-05, 09:52
  Thread: DHCP issues with unicast
Post: RE: DHCP issues with unicast

(2016-06-03 16:44)mcb30 Wrote:  This sounds like a bug in the network infrastructure. When the problem can be reproduced, how far does the DHCP response packet get before it gets dropped? (Doe...
simon General 2 7,902 2016-06-07, 09:18
  Thread: DHCP issues with unicast
Post: DHCP issues with unicast

So I started discussing this issue on IRC last week, here's a recap for other people. If you don't want to know the background story and get right to my final point/suggestion, scroll down to the last...
simon General 2 7,902 2016-06-01, 13:26