X-Git-Url: http://git.grml.org/?a=blobdiff_plain;f=scripts%2Flive;h=797f5df6fcea6ee082a482df9b70daa15a78fae4;hb=a242992a320b66e152fb1ba1705f9d8a9bf0313b;hp=7632fc896b59cc4acd5be3197d8d89724b367121;hpb=924d99d21049feb1213e1816d4345364bfb0900c;p=live-boot-grml.git

diff --git a/scripts/live b/scripts/live
index 7632fc8..797f5df 100755
--- a/scripts/live
+++ b/scripts/live
@@ -994,6 +994,30 @@ setup_unionfs ()
 	# Looking for "${root_persistence}" device or file
 	if [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ]
 	then
+		# Load USB modules
+		num_block=$(ls -l /sys/block | wc -l)
+		for module in sd_mod uhci-hcd ehci-hcd ohci-hcd usb-storage
+		do
+			modprobe -q -b ${module}
+		done
+
+		udevtrigger
+		udevsettle
+
+		# For some reason, udevsettle does not block in this scenario,
+		# so we sleep for a little while.
+		#
+		# See https://bugs.launchpad.net/ubuntu/+source/casper/+bug/84591
+		for timeout in 5 4 3 2 1
+		do
+			sleep 1
+
+			if [ $(ls -l /sys/block | wc -l) -gt ${num_block} ]
+			then
+				break
+			fi
+		done
+
 		cowprobe=$(find_cow_device "${root_persistence}")
 
 		if [ -b "${cowprobe}" ]