Hello,

I am a newbie for Linux. I 'd like to know is that how could I check the unformated partition in Linux? What is the advantages of using LVM? Please kindly give me some knowledge or advice. Thanks and appreciated for you responses.

rockfire.

What do you mean by "check" and "unformatted"?

Do you mean no filesystem? No partition type?

The advantage to LVM is it allows you to combine multiple disks or partitions into one Volume Group (VG) which you can break up into multiple Logical Volumes (LVs). This helps eliminate the size of a single disk or the relatively low number of partitions on a single disk from being an issue. Also LVs can have extents anywhere in the VG so it allows for easy resizing as compared to partitions. In the latter you'd typically have to readjust partitions beyond the one you're attempting to change in order to make room for it and allow it to remain continguous. In LVM you simply lvextend the LV to use up additional space (if available) from the VG. Also you don't have to reboot for LVM changes to take effect whereas often with partitioning you do.

LVM HOWTO http://tldp.org/HOWTO/LVM-HOWTO/

to see all the disks you have on your linux system and paritions, use
#fdisk -l

if you have LVM setup then

#lvdisplay : displays logical volumes on your system
#pvdisplay : displays physical volumes on your system
#vgdisplay : displays volume groups on your system


to create, delete, change partitions etc
#fdisk /dev/devicename eg. #fdisk /dev/hda

Hi,

You can check the unpartioned space in Unix through fdisk- l command. It will display with the complete details of the HD. If you want to make the unpartioned space into a drive use fdisk and then option M to create a new partion.

Thanks,

Chetan

Dear All,

Thank you so much and appreciated for your knowledge sharing.

Best Regards,