Xbox 360 JTAG Hdd upgrade - Error creating partition 0

[ddlusr1 0]

Hi.
I'm fairly new to the xbox360 scene, but in the last weeks i'm playing with a newly jatagged 360 slim.
I'm trying to upgrade the internal hdd with one of 1tb from my fully configured with fsd3 and dashlaunch 250gb old hdd.
So i format it into the 360 put the console number and all ok.
Then i use the guide here on this site to create partition2 and all is fine.
Strange thing is that on this new 1tb disk, i only find partition 1 and 2 (xbox 1 and data partition), this using xplorer360, buffalo explorer and fatxplorer.
I cannot find the two other partitions that there were in my old hdd
SYSTEM AUXILIARY PARTITION
SYSTEM EXTENDED PARTITION
So i cannot restore the content of my old hdd, and dashlaunch and fsd cannot start (and i don't have my old avatar)..

Those partitions should be created by 360 itself when i format the hdd?

but when i put the $SystemUpdate folder (i'm on 170511) in my external hdd it simply does nothing (also if i use $$ystemupdate).
Something i can do?

Please help.
Thank you.