qvm-create.1: more detailed --root-copy-from description

Signed-off-by: Yann Dirson <[email protected]>
QubesOS · Sep 18, 2021 · 1a8913a · 1a8913a
1 parent 764ca71
commit 1a8913a
Showing 1 changed file with 5 additions and 2 deletions.
diff --git a/doc/manpages/qvm-create.rst b/doc/manpages/qvm-create.rst
@@ -58,8 +58,11 @@ Options
 
 .. option:: --root-copy-from=FILENAME, -r FILENAME
 
-   Use provided :file:`root.img` instead of default/empty one (file will be
-   *copied*). This option is mutually exclusive with :option:`--root-move-from`.
+   Use provided :file:`root.img` instead of default/empty one (file
+   will be *copied*). If the provided file does not have the same size
+   as the system volume being created, the VM will still be created
+   but with an empty system volume, and the program will report an
+   error. This option is mutually exclusive with :option:`--root-move-from`.
 
 .. option:: --root-move-from=FILENAME, -R FILENAME