mounting a ramdisk with ES 3

what is the correct way? usual way leads to a crash

[ikbenhet1]

on a normal red hat system i used to do:
mount /dev/ram0 /target
and everything worked fine.

on ES3 i enter:
mount /dev/ram0 /target
but it does not work..i need to specify the type..

so i type :
mount /dev/ram0 /target -t ramfs
i get no error messages,

next i copy a file into the ramdisk and the server crashes..

so my question is, was this the correct way for me to mount this ramdisk or should i have entered something else for the mount command?