Lenovo Thinkpad Yoga 260 w/Lenovo ThinkPad USB 3.0 Ethernet Adapter FRU:03x6903

[Wayne Workman]

@sudburr said in Lenovo Thinkpad Yoga 260 w/Lenovo ThinkPad USB 3.0 Ethernet Adapter FRU:03x6903:

Is there an equally simple solution for a .*pxe and what is it?

I can’t say I’m an expert on this, and @george1421 probably knows how to do this already. But I would think you’d create a partition on a usb drive that is marked as bootable using fdisk and then format that partition fat32, and then take those for files from ipxe’s image and put them there, and just modify them as needed. Like changing out the kernel file with the desired rom file, and replacing the script with the stuff from default.ipxe.

[sudburr]

Alrighty… Murphy just showed for work.

All four good USB-based .efi solutions now hang .

bzimage... ok
init.xz... ok
then nothing

grrr … argh

[Tom Elliott]

@sudburr And if you use the 7156 labelled file?

[Tom Elliott]

I suppose you could also try working-RC-26 files. I updated ipxe files yesterday I believe.

[george1421]

@sudburr I guess I would have to ask the question, how many of these weird systems that will not pxe boot do you have to deal with? The answer may be to just dig a hole and fill it with these devices.

For efi devices building a boot drive is pretty simple. It would also be interesting to see if you can skip iPXE entirely by using grub to boot into FOS via https://forums.fogproject.org/topic/7727/building-usb-booting-fos-image

[sudburr]

@george1421 More than you can shake a several dead cats at.

[george1421]

@sudburr Have you tried the magical 7156 version that Tom talked about? That actually is a legacy iPXE kernel that seems to work well with the surface pros.

[sudburr]

@george1421 Yes, scroll up to the `More interesting news’.

[sudburr]

@Tom-Elliott Already have. Scroll up to the `More interesting news’.

[sudburr]

And now… the 4 magic USB .efi solutions are working again. o_O

[george1421]

@sudburr ok so I’m a bit confused. It appears that you can network efi boot these devices. Is your goal to legacy boot these devices?

I can understand why the usb booting would work over network booting the same iPXE kernel if the netboot code is fault in the yoga’s firmware. We have seen the hand-off between firmware and iPXE fail on some of these lenovos in the past.

[sudburr]

Just trying to find the path of least resistance given our environment. The 4 USB .efi solutions are now working again. Murphy has passed out in the corner.

[sudburr]

@george1421 Like I mentioned above, the Lenovo ThinkPad 13 works perfectly with the same BIOS setup. No need for the USB solution that the Yoga 260 requires for UEFI/Legacy dual booting. I fully believe the problem is entirely with the firmware on the Yoga.

Both work better now than they did 4 months ago with the BIOS version available then.