Emu XL-7 & MP-7 User's Group

I going to explain my "problem": one beautiful night i was trying to 
make a secuence in my xl-7. but suddenly, i saw the next message into 
the screen : is not more space into the memory, all the information 
going to be compresed.it going to take about 5 minutes"  O_o wtf!! i 
was scared, because i didn't have to much secuences into my xl-7, just 
5 or 6. I confess that i was trying to stop the operation, i didn't 
want compress nothing, so the last thing that i made was unplug it...

after this i didn't know what to do: laugh or cry.

why? because when i restarted my unit, all the factory songs and 
secuences disappeared from the menu. the patterns still but i'm not 
sure if i compressed or erased the factory settings. 
my cuestions: 
Does is possible to erase the factory settings and recorver it again? 
How can i see the space available to store my patterns and songs?
which is the store limit that i have with my xl-7?
and if i compressed this info. how to descompress again?

I like my xl-7 without factory sets, but I want to know if i am 
overloading the memory.
thank you by read my confession, now i can feel me less guilty.