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-rw-r--r--guix/scripts/system.scm5
1 files changed, 4 insertions, 1 deletions
diff --git a/guix/scripts/system.scm b/guix/scripts/system.scm
index 566e7e8768..e5d754a6fa 100644
--- a/guix/scripts/system.scm
+++ b/guix/scripts/system.scm
@@ -477,7 +477,10 @@ PATTERN, a string. When PATTERN is #f, display all the system generations."
((vm)
(system-qemu-image/shared-store-script os
#:full-boot? full-boot?
- #:disk-image-size image-size
+ #:disk-image-size
+ (if full-boot?
+ image-size
+ (* 30 (expt 2 20)))
#:mappings mappings))
((disk-image)
(system-disk-image os #:disk-image-size image-size))))