Humm.
I tried recompile 1.9.2.7-4 for my wlhdd but after flashing it, I lost /dev/discs.

Compile operation was :
src/wl500g-1.9.2.7-4/make kernel
src/wl500g-1.9.2.7-4/make
src/gateway/make
src/gateway/make package-WLHDD

any idea why my firmware lacks /dev/discs ?