modified time in the COW disk image so that chances of mistakes are
reduced.
-If raw disk image is not read-only, by pressing @key{C-a s} you can
-flush the COW disk image back into the raw disk image, as in snapshot
-mode.
+If the raw disk image is not read-only, by pressing @key{C-a s} you
+can flush the COW disk image back into the raw disk image, as in
+snapshot mode.
COW disk images can also be created without a corresponding raw disk
image. It is useful to have a big initial virtual disk image without