Stop x from starting during Tiny Core boot

[mbertrand]

I have Tiny Core installed at some client. It is configured to lunch our app (some hardware controller software) on each startup. This was done by adding it to .xsession. All is well.

But now for reasons outside of this scope this app is hanging and we are unable to shut it down without killing the process.
This is a controller and is equipped with a watch dog that will trip if it is not shut down properly. So killing our process will cause a reboot and it all starts again. I need to be able to have time to edit '.xsession' then we could fix the problem. Si I was thinking
if there is way during booting to stop X from starting?

[gerald_clark]

boot code 'text'

Also, X programs to be run on X start should be started by scripts in ~/.X.d/

[mbertrand]

Yes I know that's next. Thanks. But how do I get to enter my boot code. I don't understand documentation.
When the computer boots I hit CTRL+ALT+F2 to get boot loader prompt? How do I do this?

[bmarkus]

Press TAB key in boot menu.

[gerald_clark]

Or 'e' for GRUB.

[mbertrand]

Sorry but how do I get the boot menu?

[gerald_clark]

SInce we don't know what you are using for a boot loader, we don't know.

[mbertrand]

SYSLINUX.

[mbertrand]

Ok I think I got it.
I press ALT, this brings up the boot loader prompt:
Here I typed 'core text' this loaded my Tiny Core without x running just like I wanted.