LinuxCNC Uspace

Thanks for the answer
but
the effort is to upgrade from jessie ( what i got )
to stretch ( what i want to upgrade to ).

methinks keeping the repos as they were already would have no effect

are you sure about editing all 3 instances of "stretch" to "jessie" ?

Maybe I dont understand, willing to try but i got a munged system already.

Please comnsider my hesitation and tell me what you think.
Thanks
TomP

is there TCP M128 on the new ISO already provided

If you system is "munged", copy what you want from your home directory and do a fresh install with stretch.

A whole lot easier than trying to recover.

Just pick one of the three linuxcnc repos, don't add all three.

Those instructions are for a fresh clean install not an upgrade.

JT

sir did you mean we cant use real time kernal on debian stretch for building linuxcnc

You can use the preempt-rt kernel (that is included on the LinuxCNC Stretch ISO) or you can install the kernel package on a plain install:

If you go to the Synaptic package manager you will find it with a search for "realtime"
This is the package for Jessie (which I happen to have open)

linux-image-4.9-rt-amd64

"Linux for 64-bit PCs (meta-package), PREEMPT_RT"

So you can just install that from the package manager (the kernel number will be different)