Disable usage of --copy-only and --grub at the same time

[grml2usb.git] / grml2usb

diff --git a/grml2usb b/grml2usb
index 9d5c2ef..e608ac1 100755 (executable)
--- a/grml2usb
+++ b/grml2usb
@@ -645,6 +645,10 @@ def install_mbr(mbrtemplate, device, partition, ismirbsdmbr=True):
         raise Exception("error executing dd (third run)")
     del tmpf
 
+    # make sure we sync filesystems before returning
+    proc = subprocess.Popen(["sync"])
+    proc.wait()
+
 
 def is_writeable(device):
     """Check if the device is writeable for the current user
@@ -1732,6 +1736,9 @@ def check_options(opts):
     if opts.grubmbr and not opts.grub:
         raise CriticalException("--grub-mbr requires --grub option.")
 
+    if opts.copyonly and opts.grub:
+        raise CriticalException("Cannot use --copy-only and --grub at the same time.")
+
 
 def check_programs():
     """check if all needed programs are installed"""