On Thu, Feb 12, 2015 at 09:33:27AM +0200, Ady wrote:> On Thu, Feb 12, 2015 at 05:17:08PM +1100, Paul Daniels wrote: > > Im a long time PXE boot fan. I use it for wimbooting windows PE, linux > > images via http, and memtest mainly. > > > > Ive got it nicely customised with my own graphics etc. > > > > Then UEFI booting came along. Till now ive been content simply setting > > bios's to CSM mode and doing my thing.... > > > > Ive had another go at EFI PXE booting and can now get the menus and grahics > > from syslinux working, but I cannot get any of my images to run. > > > > They start to load and the system reboots. > > > > I think im missing something basic here, do my operating systems need a > > signature registered on the computers? or should syslinux simply pass > > control to the kernel? > > > > any advice? > > Although Syslinux 6.03 has some limitations (and bugs) when trying to > boot some kernels, you have not mentioned any specific kernel (or > distro) you are having problems with. The configuration settings that > were used to build the kernel are relevant too. > > For example, the older memtest(s) kernels are not compatible with UEFI > systems. Another one: as of version 6.03, memdisk has support for BIOS, > not UEFI. > > So, there are several possible reasons for your kernel not to boot in > UEFI systems with Syslinux 6.03. > > Sometimes the hardware (or its firmware) might play a role. Updating > your firmware might help. > > In some cases, the TFPT/DHCP options might be inadequate. > > In other words, you would need to be more specific about the behavior > you are seeing (i.e. provide more details).Elaborate They start to load and the system reboots. Groeten Geert Stappers -- Leven en laten leven
On 2015-02-13 13:45, Geert Stappers via Syslinux wrote:> Elaborate > They start to load and the system reboots.I have the same issue, syslinux6.03, using syslinux.efi I have a HP G9 BL460c blade with EFI and a vmware virtualised guest with EFI enabled. I'm attempting to install rhel6.6, kernel 2.6.32. Both machines will boot successfully, load kernel vmlinuz, then start to load initrd.img but reset a minute or two later. rhel7 kernel 3.10.0 works better in the VM and actually loads successfully and kickstarts, but the HP G9 blade still resets whilst loading initrd. The page at http://www.syslinux.org/wiki/index.php/Common_Problems states: Linux EFI pre-3.3 Most kernels before Linux-3.3 have also been observed to have other issues. Symptoms include spontaneous reboot at some point after kernel execution begins. So does this mean we can't efi net boot rhel6/7 centos 6/7 or any distro that uses pre 3.3 kernels? Thanks for any assistance. Michael
> On 2015-02-13 13:45, Geert Stappers via Syslinux wrote: > > Elaborate > > They start to load and the system reboots. > > I have the same issue, syslinux6.03, using syslinux.efi I have a HP G9 > BL460c blade with EFI and a vmware virtualised guest with EFI enabled. > > I'm attempting to install rhel6.6, kernel 2.6.32. Both machines will > boot successfully, load kernel vmlinuz, then start to load initrd.img > but reset a minute or two later. rhel7 kernel 3.10.0 works better in the > VM and actually loads successfully and kickstarts, but the HP G9 blade > still resets whilst loading initrd. > > The page at http://www.syslinux.org/wiki/index.php/Common_Problems > states: > Linux EFI pre-3.3 > Most kernels before Linux-3.3 have also been observed to have other > issues. Symptoms include spontaneous reboot at some point after kernel > execution begins. > > So does this mean we can't efi net boot rhel6/7 centos 6/7 or any distro > that uses pre 3.3 kernels? > > Thanks for any assistance. > > MichaelThis issue was discussed already more than once. Instead of posting several links an enumerating each if the culprits (it is not just Syslinux, but we indeed would want Syslinux to have some solution or at least workarounds), I'll link to 2 prior emails that should sum up (more or less) the current situation in Syslinux 6.03: _ "regression: relocatable kernels on a chromebook". The email thread was started in regards to booting in BIOS, but the following link is about both, BIOS and UEFI: http://www.syslinux.org/archives/2015-February/023210.html _ "syslinux 6.03 does not boot some kernels". Syslinux needs to implement potential "fallback" methods for (older) kernels not following newer standards/rules/conventions: http://www.syslinux.org/archives/2014-December/022928.html Regards, Ady.> _______________________________________________ > Syslinux mailing list > Submissions to Syslinux at zytor.com > Unsubscribe or set options at: > http://www.zytor.com/mailman/listinfo/syslinux >