current latest download of LinuxCNC V2.9.8 will not install GRUB on several PC's

depronman wrote:

Can’t find anything in the bios related to csm

Not all bios seem to have that.

If bios has CSM and it is turned off, I have no luck booting anything in legacy bios mode, I get:
"No boot media found"

My hazy memory is slowly refreshing. It seems I manually created a small bios boot partition (legacy mode) or efi partition (uefi mode). I never investigated why I had to do that; whether:
1. The automatic partitioner failed to create it, or
2. Some option I had selected prevented it from creating it automatically.

Posting a screenshot of what it is creating at the stage it asks you to confirm the partitioning might be helpful. I'm not sure whether there is an easy way to take a real screenshot of that, you might have to snap a photo of it.

depronman wrote:

I didn’t spot it in the bios but equally wasn’t looking for it. Is it normally in the same area of the bios screen that legacy mode and secure boot reside ?

 

That sounds like it... Trusted computing. Boot priority. Those are some areas I'd think of checking. If it is nowhere, then it probably does not have CSM.

One naughty bios in one of my systems a while back showed: CSM = disabled. It could not be enabled. The manual said it can be enabled if you install a graphics card. I tried that and it worked. Which was a problem because it had only one PCIe slot and I wanted something else in it; I had no need for a graphics card on that system.

Further experimenting seems to have determined the cause of the failure at Grub install

I was performing the install in the workshop where I have wifi access to the internet but no Ethernet connections 
Everytime without fail the install of 2.9.8 failed at the install Grub stage

Now on the same PC with a Ethernet cable plugged in the install ran through without any issues at all

i therefore believe that something critical to installing Grub is missing from the 2.9.8 ISO, as the 2.9.7 iso installed ok WITHOUT the Ethernet cable being plugged in

hopefully this rather time consuming and frustrating experience of installing 2.9.8 will help other following the same path

Thanks to all who replied with ideas, very much appreciated

best regards. Paul