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-rw-r--r--src/Propellor/Property/DiskImage.hs6
1 files changed, 5 insertions, 1 deletions
diff --git a/src/Propellor/Property/DiskImage.hs b/src/Propellor/Property/DiskImage.hs
index d5898d7c..89a8d0c6 100644
--- a/src/Propellor/Property/DiskImage.hs
+++ b/src/Propellor/Property/DiskImage.hs
@@ -49,7 +49,11 @@ type DiskImage = FilePath
-- First the specified Chroot is set up, and its properties are satisfied.
--
-- Then, the disk image is set up, and the chroot is copied into the
--- appropriate partition(s) of it.
+-- appropriate partition(s) of it.
+--
+-- The partitions default to being sized just large enough to fit the files
+-- from the chroot. You can use `addFreeSpace` to make them a bit larger
+-- than that, or `setSize` to use a fixed size.
--
-- Note that the disk image file is reused if it already exists,
-- to avoid expensive IO to generate a new one. And, it's updated in-place,