Hi,
   
   I have a kernel with UVM defined (i386). When booting, I get :
   
   ...
   uvm_swap: allocated 138 swap buffer headers
   ...
   savecore: /dev/wd0a: Device busy
   ...
   
   I have tried to recompile savecore with UVM=true in /etc/mk.conf and also
   with COPTS=-DUVM (first don't work now ;-).


/dev/wd0a ?  do you have `dumps on wd0a' in your config file?  isn't that
your root filesystem?  savecore should probably be looking in /dev/wd0b ..