Hello, I'm in a slightly unusual situation and I'd really appreciate some advice. I installed CentOS 5.2 on a server about a month ago. Today I happened to check the 'free' command and noticed that the Swap line reads as follows: Swap: 0 0 0 I'm pretty certain that when I installed the OS and created a custom partition table, that I defined a swap partition, but there is no swap line in /etc/fstab either. However the output of 'lvm> lvdisplay' contains the following information (amongst others): --- Logical volume --- LV Name /dev/VolGroup00/swap VG Name VolGroup00 LV UUID 7uOBcj-tN16-uAbO-3nyy-3scZ-SAEA-7HKWPW LV Write Access read/write LV Status available # open 0 LV Size 1.94 GB Current LE 62 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:5 Also 'ls' confirms that logical volume exists: [root at mail ~]# ls -l /dev/VolGroup00/swap lrwxrwxrwx 1 root root 27 Sep 30 11:30 /dev/VolGroup00/swap -> /dev/mapper/VolGroup00-swap I'd like to know: 1. How can I check how this logical volume is formatted (and if it is formatted)? 2. Is it possible to use this logical volume? If I add a line to /etc/fstab, what are the chances of rendering my system unbootable? The server is in use and presently doesn't have any memory problems, and while it's not mission critical server I'd rather not mess it up with any ill-thought out tinkering. If anyone can give me some advice on this I'd be very grateful. Thanks Ian Masters