+grub-install complains about /boot/grub/device.map?!
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+The following message:
+
+ grub-probe: error: Cannot open `/boot/grub/device.map'
+
+... is "normal" (at least with grub1). This isn't a problem, because the
+device.map file will be generated on the target device anyway.
+
+grub-install complains about a unary operator?!
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+The following message:
+
+ '/usr/sbin/grub-install: line 374: [: =: unary operator expected'
+
+... is "normal". Just ignore it.
+