docs: clarify usage of GRMLBASE regarding kernel package selection

Closes #17 @ GH

diff --git a/docs/grml-live.txt b/docs/grml-live.txt
index 25c2b47..f818d87 100644 (file)
--- a/docs/grml-live.txt
+++ b/docs/grml-live.txt
@@ -350,7 +350,13 @@ ISO size.
 * GRMLBASE: the main class responsible for getting a minimal subset of what's
 defining a Grml system. Important parts of the buildprocess are specified in
 this class as well, so unless you have a really good reason you should always
-use this class.
+use this class. Please be aware that using *just* the GRMLBASE class won't be
+enough, because the kernel packages (e.g. linux-image-i386-grml +
+linux-image-amd64-grml) are chosen in further GRML_* classes (to provide maximum
+flexibility with kernel selection). If you don't want to use the existing
+GRML_FULL or GRML_SMALL classes, define your own CLASS file choosing the kernel
+package you want to use (and don't forget to include your CLASS in the arguments
+of grml-live's -c... command line option).
 
 * GRML_FULL: full featured Grml, also known as the "normal", full grml as
 introduced in December 2011 (~460MB ISO size).