(solved) Parallel setup tcl3.8.4 and tcl4.0.2 on SD card (extensions,boot): how?

[floppy]

Hello,
I have tcl3.8.4 on an SD.
I would like to install 4.0 on it.
On my desktop PC I am working from, the install 3.8.4 to 4.0 was a bit difficult because I did not create a new TCE directory.
So, I would like to create a parallel structure 4.0 to 3.8.4 for this SD card.
And when 4.0 will be installed, I will delete the 3.8.4 later.

Today in the extlinux.conf of the SD card:

LABEL tcl3.8.4 basic
 MENU LABEL tcl3.84 basic
 KERNEL /boot/tcl/bzImage
 APPEND vga=ask quiet showapps lst=onboot.lst waitusb=5:UUID="cc9e97b9-67de-4e85-8f80-750a7d0f8841" tce=UUID="cc9e97b9-67de-4e85-8f80-750a7d0f8841" kmap=qwertz/de-latin1 mydata=datafonic nodhcp
  initrd /boot/tcl/tinycore.gz
#
# to be worked out..
#
LABEL tcl4.0.2 basic
 MENU LABEL tcl4.0.2 basic
 KERNEL /boot/tcl4/vmlinuz
 APPEND vga=ask quiet showapps lst=onboot.lst waitusb=5:UUID="cc9e97b9-67de-4e85-8f80-750a7d0f8841" tce=UUID="cc9e97b9-67de-4e85-8f80-750a7d0f8841" kmap=qwertz/de-latin1 mydata=datafonic nodhcp
initrd /boot/tcl4/tinycore.gz
#

Question: how to change the tce=xxx boot code in tcl4.0 for making tcl4.0 finding the extensions in /tce4/  ?
(in 3.8.4 above, the /tce/ exists)

[gerald_clark]

tce=UUID="cc9e97b9-67de-4e85-8f80-750a7d0f8841"/tce4

[floppy]

Thanks. The issue is solved now.