no /lib/modules/2.6.15-27-386/volatile on boot

[dethadol]

When booting I get an error message saying :-

mkdir: cannot create directory /lib/modules/2.6.15-27-386/volatile -
read only filesystem

I have not had this problem with previous kernels and in fact the
volatile sub directories exist for both /lib/modules/2.6.15-26-386/
and /lib/modules/2.6.15-25-386/. I am concerned that something important
is missing, has anyone got any ideas

Thanks dethadol