diff --git a/src/etc/etc.arc/disktab b/src/etc/etc.arc/disktab
index 1d6d5701..92d89493 100644
--- a/src/etc/etc.arc/disktab
+++ b/src/etc/etc.arc/disktab
@@ -29,9 +29,9 @@
 #
 
 rdroot|ramdiskroot|RAM-disk root FS image:\
-	:ty=simulated:se#512:nc#20:nt#5:ns#200:\
-	:ta=4.2BSD:oa#0:pa#20000:fa#1024:ba#4096:\
-	:ob#0:pb#0:oc#0:pc#20000:
+	:ty=simulated:se#512:nc#16:nt#4:ns#128:\
+	:ta=4.2BSD:oa#0:pa#8192:fa#512:ba#4096:\
+	:ob#0:pb#0:oc#0:pc#8192:
 	
 # Seagate ST31200N
 ST31200N-MBR:\
diff --git a/src/etc/etc.arc/mbr b/src/etc/etc.arc/mbr
deleted file mode 100644
index 5c3d71a2..00000000
Binary files a/src/etc/etc.arc/mbr and /dev/null differ
diff --git a/src/etc/etc.arc/msdos5mb.gz b/src/etc/etc.arc/msdos5mb.gz
deleted file mode 100644
index 6508b105..00000000
Binary files a/src/etc/etc.arc/msdos5mb.gz and /dev/null differ