I found it remarkably irritating that Fedora 8 mounts all the partitions which I deliberately left out of the FSTAB because I didn't want to access them. After some help from the hal mailing list, I found how to make it stop: Create a .fdi file (the name at least some distros use is no-fixed-drives.fdi) in the /etc/hal/fdi/policy/ directory, and stick this xml in it: <?xml version="1.0" encoding="UTF-8"?> <!-- -*- SGML -*- --> <deviceinfo version="0.2"> <device> <match key="@block.storage_device:storage.hotpluggable" bool="false"> <match key="@block.storage_device:storage.removable" bool="false"> <merge key="volume.ignore" type="bool">true</merge> </match> </match> </device> </deviceinfo> This will tell hal not to blab about fixed disks and so gnome will never get told to mount them. By the same token, I fixed my problem with the USB backup disk I don't want anyone to mount by creating the stop-hal-stop.fdi file that looks very similar: <?xml version="1.0" encoding="UTF-8"?> <deviceinfo version="0.2"> <device> <match key="volume.label" string="BACKUP"> <merge key="volume.ignore" type="bool">true</merge> </match> </device> </deviceinfo> In this case I specifically look for the label I put on the partition.