X-Git-Url: http://git.grml.org/?a=blobdiff_plain;f=scripts%2Flive-bottom%2F43disable_updateinitramfs;h=0a6c7c0b1530d3d7acb031036366322d1f5d3e3e;hb=7111ab7c3b1220384a8f576e170ba3910110ad97;hp=ed3d53fa49d8143a05c494d22a47b742dd9bb301;hpb=5f0f3b0c36d433a462176f970d371c77c3020749;p=live-boot-grml.git

diff --git a/scripts/live-bottom/43disable_updateinitramfs b/scripts/live-bottom/43disable_updateinitramfs
index ed3d53f..0a6c7c0 100755
--- a/scripts/live-bottom/43disable_updateinitramfs
+++ b/scripts/live-bottom/43disable_updateinitramfs
@@ -22,20 +22,39 @@ esac
 
 . /scripts/live-functions
 
-log_begin_msg "Disabling update-initramfs (useless on a live CD)"
+log_begin_msg "Possibly disabling update-initramfs (useless on a live CD)..."
 
 # live-initramfs script
 
 chroot /root dpkg-divert --add --rename --quiet \
 	/usr/sbin/update-initramfs
 
-cat > /root/usr/sbin/update-initramfs <<EOF
+# Running off a USB disk or other writable media.
+if [ -w /root/cdrom ] && \
+   # rw is guaranteed to be first.
+   grep -q ' /root/cdrom rw[, ]' /proc/self/mountinfo
+then
+
+cat > /root/usr/sbin/update-initramfs << 'EOF'
+#!/bin/sh
+
+update-initramfs.distrib "$@"
+cp /initrd.img /cdrom/live/initrd.gz
+cp /vmlinuz /cdrom/live/vmlinuz
+exit 0
+EOF
+
+else
+
+cat > /root/usr/sbin/update-initramfs << EOF
 #!/bin/sh
 
-echo "update-initramfs is disabled since running on a live CD"
+echo "update-initramfs is disabled since running on read-only media"
 exit 0
 EOF
 
+fi
+
 chmod 0755 /root/usr/sbin/update-initramfs
 
 log_end_msg