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-rw-r--r--qemu-doc.texi3
1 files changed, 2 insertions, 1 deletions
diff --git a/qemu-doc.texi b/qemu-doc.texi
index 931573e307..a9c2e2e78f 100644
--- a/qemu-doc.texi
+++ b/qemu-doc.texi
@@ -234,7 +234,8 @@ Define a new drive. Valid options are:
@table @code
@item file=@var{file}
This option defines which disk image (@pxref{disk_images}) to use with
-this drive.
+this drive. If the filename contains comma, you must double it
+(for instance, "file=my,,file" to use file "my,file").
@item if=@var{interface}
This option defines on which type on interface the drive is connected.
Available types are: ide, scsi, sd, mtd, floppy, pflash.