--- /lib/udev/rules.d/81-arch.rules	2011-06-02 16:47:56.000000000 +0200
+++ 81-arch.rules	2011-06-14 22:18:54.354972831 +0200
@@ -19,8 +19,10 @@
 # global stuff
 #
 
-# permission for sg devices
-KERNEL=="sg[0-9]*", ATTRS{type}!="3|6", GROUP="disk", MODE="0660"
+# permissions for removable storage
+SUBSYSTEM=="block", ATTRS{removable}=="1", GROUP="storage"
+SUBSYSTEM=="block", SUBSYSTEMS=="usb|ieee1394|mmc|pcmcia", GROUP="storage"
+KERNEL=="cbm",  GROUP="storage"
 
 # permissions for IDE CD devices
 SUBSYSTEMS=="ide", KERNEL=="hd[a-z]", ATTR{removable}=="1", ATTRS{media}=="cdrom*", GROUP="optical"
@@ -29,14 +31,8 @@
 SUBSYSTEMS=="scsi", KERNEL=="sr[0-9]*", ATTRS{type}=="5", SYMLINK+="scd%n", GROUP="optical"
 SUBSYSTEMS=="scsi", KERNEL=="sg[0-9]*", ATTRS{type}=="5", GROUP="optical"
 
-# permissions for removable devices like cardreaders or sticks
-KERNEL=="sd*", ATTRS{scsi_level}=="3", ATTRS{type}=="0", GROUP="storage"
-
-# permissions for firewire external drives
-KERNEL=="sd*", ATTRS{scsi_level}=="5", GROUP="storage"
-
-# permissions for usb to scsi external adapters
-KERNEL=="sd*", ATTRS{scsi_level}=="3", ATTRS{type}=="7", GROUP="storage"
+# permission for disk not affected by others group
+KERNEL=="sg[0-9]*", ATTRS{type}!="3|6", GROUP="disk", MODE="0660"
 
 # permissions for ide storage like pcmcia card readers
 ACTION!="add", GOTO="pcmcia_end"