Unable to mount the selected volume，可能是什么问题呢？

Fixend

在桌面打开Computer，里面多了一堆volume，原来是是只有FileSystem, cd-rom和network的，似乎是开启了hal的效果。但是双击打不开，提示为

Unable to mount the selected volume.
libhal-storage.c 1401 : info: called libhal_free_dbus_error but dbuserror was not set.

process 2952: applications must not close shared connections - see dbus_connection_close() docs. this is a bug in the application.

error: device /dev/hdb2 is not removable

error: could not execute pmount

系统是新装的etch，怎么可以双击打开，要做什么配置吗，或者怎么可以让他不再显示这些volume，停用hal和dbus吗？