how to install <Preempt-RT kernel> on top of Wheezy

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20 Feb 2017 22:24 - 20 Feb 2017 22:39 #88403 by Stormbird
Help please. Have successfully installed Debian Wheezy, now trying to install Preempt-RT kernel having already set up a root password during the Wheezy install. If not possible, how then do I edit so there is no root password??
When I wrote in Terminal <sudo apt-get update> it asked for my sudo user password which i do not have - I gave it my root password and it said it was wrong, which I assume is another way of saying sudo disabled (on account of having already set up a root password)?
Last edit: 20 Feb 2017 22:39 by Stormbird.

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20 Feb 2017 22:38 #88404 by Clive S
Are you sure it is asking you for the psw as the first box that comes up it wants the user name and then the psw.

That has caught me out and probably others as well.

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20 Feb 2017 22:44 #88405 by tommylight
You will have to reinstall and skip the part where it askes for a root password.

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20 Feb 2017 22:56 #88406 by Stormbird
in linuxcnc.org/docs/html/getting-started/getting-linuxcnc.html, section 7.1.3, i am instructed to open Terminal and type in when i do that , it asks <[sudo] password for adam:> . I enter my root password and it says <adam is not in the sudoers file. This incident will be reported.>
What do i do to get into the sudoers file??

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20 Feb 2017 23:18 #88407 by Stormbird
how do I reinstall?

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20 Feb 2017 23:30 #88408 by Stormbird
Ok so i am simply rebooting from original wheezy netinst.iso

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21 Feb 2017 00:02 #88410 by tommylight
You would be better off starting from scratch, usint this tutorial:
forum.linuxcnc.org/9-installing-linuxcnc...h-rip-install-or-deb

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21 Feb 2017 00:55 #88411 by Stormbird
Success - all loaded and ready to play with. Thanks

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22 Feb 2017 03:48 #88479 by cncnoob1979
Stormbird,

What did you do to get back up and going? Did you reinstall via live cd?

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22 Feb 2017 08:24 - 22 Feb 2017 08:25 #88487 by Stormbird
I just reloaded the netinst.iso file and followed the instructions on the linuxcnc website again , making sure to leave passwords blank where possible. It did not remove the first install but the latest install is at the top of the boot list so no problem (I do seem to have 4 different operating systems on the hard disc now - the top of the list being the amd64 version of Debian wheezy with Preempt-RT kernel). Have a very large hard disc so no problem but would be nice to know how to delete the other 3
Last edit: 22 Feb 2017 08:25 by Stormbird.

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