1. I'm reading a redhat9 book which mentions LVM. However, I type in "vgdisplay" and it says "no volume groups found".
2. When I tried to install fedora3, it automatically created:
and it also listed hard drives.
3. I have a screenshot from when I installed fedora2 once and it had a "LVM" button but only information about the "disk drives":
4. So LVM seems to me to be something that is "sometimes used and sometimes not". I understand it to be a different way of partitioning the hard drive.
Can someone shed some light on how they use LVM for practical purposes, why I would use it, if it is always "in the background" etc.