--- wikisrc/kernel_debugging_with_qemu.mdwn	2015/02/18 16:03:37	1.6
+++ wikisrc/kernel_debugging_with_qemu.mdwn	2015/02/19 08:32:23	1.8
@@ -9,7 +9,8 @@ You need a computer running an OS capabl
 (the "host system").
 This can be NetBSD itself, Linux, or some other Unix-like OS.
 These instructions have been tested with NetBSD/amd64 6.1.4 and
-Debian 7 hosts.
+Debian 7 hosts.   There should be at least 20 gigabytes of available
+disk space.
 
 If your host system is running NetBSD, install the following packages
 from pkgsrc:
@@ -62,7 +63,7 @@ Install the system in a virtual machine,
 Next, start two qemu virtual machines, one to run the kernel being
 debugged (the "kgdb target") and another to run gdb (the "kgdb host").
 
-The two VMS could be run on separate physical machines, but in this
+The two VMs could be run on separate physical machines, but in this
 example, they are run on the same physical machine and share the same
 hard disk image.  This sharing is made possible by the "-snapshot"
 option to qemu, which ensures that the disk image is not written to by