Question : Why centos live cd so slow, and can not mount local HDD?

I have 2 question about Centos Live CD ( CentOS-5.5-i386-LiveCD-Release2.iso)
1. It's very slow to start

2. After boot by CD, I want to mount local HDD, but It has error:

 
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[root@livecd ~]# fdisk -l

Disk /dev/dm-0: 4294 MB, 4294967296 bytes
255 heads, 63 sectors/track, 522 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/dm-0 doesn't contain a valid partition table

Disk /dev/dm-1: 4294 MB, 4294967296 bytes
255 heads, 63 sectors/track, 522 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/dm-1 doesn't contain a valid partition table

Disk /dev/sda: 107.3 GB, 107374182400 bytes
255 heads, 63 sectors/track, 13054 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       13054   104751832+  8e  Linux LVM
[root@livecd ~]# mount -t ext3 /dev/sda2 /mnt/sda
mount: /dev/sda2 already mounted or /mnt/sda busy
[root@livecd ~]#


mount: /dev/sda2 already mounted or /mnt/sda busy

How to resolve?
 
Thanh you!

Answer : Why centos live cd so slow, and can not mount local HDD?

use lvmdisplay
pvscan.

The partition /dev/sda2 is an LVM volume.
You need to use lvm tools to view the partitions within the LVM volume.
http://linuxdevcenter.com/pub/a/linux/2006/04/27/managing-disk-space-with-lvm.html
http://www.gagme.com/greg/linux/raid-lvm.php
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