>
> Probably because there's usually no /etc/rc nor getty on memory disks and we
> want a shell anyway
>
>> ----
>>
>> How exactly does this work?  All the INSTALL kernels are the same, and
>> they load right into sysinst without a prompt.

I have to admit I do not follow, based on review of the code in 
sbin/init/init.c and src/sys/dev/md*, as well as the INSTALL kernel file, 
I do not understand this check.


         if (unit == 0) {
                 /* The root ramdisk only works single-user. */
                 boothowto |= MEMORY_RBFLAGS;
         }

int unit seems to be the same in INSTALL v.s. GENERIC, except INSTALL will 
get MFS_DEV*

Anyway, is that comment acurate? It works fine for me.

Time for a cocktail!

~BAS


>>
>> PS. md_root.c::md_open_hook() has been moved to src/sys/dev/md_root.c
>
> note that you can override MEMORY_RBFLAGS in your kernel config file.