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-rwxr-xr-xscripts/contrib/mkefidisk.sh2
1 files changed, 1 insertions, 1 deletions
diff --git a/scripts/contrib/mkefidisk.sh b/scripts/contrib/mkefidisk.sh
index 0c15104bb3..bcc2411ca2 100755
--- a/scripts/contrib/mkefidisk.sh
+++ b/scripts/contrib/mkefidisk.sh
@@ -64,7 +64,7 @@ function device_details() {
echo " model: UNKNOWN"
fi
if [ -f "/sys/class/block/$DEV/size" ]; then
- echo " size: $[$(cat /sys/class/block/$DEV/size)*BLOCK_SIZE] bytes"
+ echo " size: $(($(cat /sys/class/block/$DEV/size) * $BLOCK_SIZE)) bytes"
else
echo " size: UNKNOWN"
fi