Understand the basics of Fdisk under Linux

Fdisk -l displays the following information [root@localhost ~]# fdisk -l Disk /dev/sda: 78.0 GB, 78026450432 bytes 255 heads, 63 sectors/track, 9486 cylinders Units = Cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sda1 * 1 13 104391 83 Linux /dev/sda2 14 9486 76091872+ 8e Linux LVM 1. What does the asterisk below mean? Why is there only sda1? ——Start partition flag 2. What partitions are sda1 and sda2? Is sda1 a swap partition? Partition number 83 indicates ext2 or ext3, partition number 82 is the swap partition, and sda1 is not. What is the meaning of 3.linux and the following linux lvm? Linux partition refers to ext2 or ext3 partitions lvm is a logical volume manager, the role played is a simple logical view used to represent the basic physical storage space. LVM manages a single physical disk — or rather, a single partition on a disk. It should only be used if you have experience with LVM. To create an LVM logical volume, you must first create a partition of type Physical Volume (LVM). Once you have created one or more physical volume (LVM) partitions, select “LVM  to create an LVM logical volume.