ubuntu 11.04 showing some HDD error

[sukesh1090]

I want to install ubuntu 11.04 on my computer and booted with live cd(USB).if i try to open any of my HDD partition i will get some error like failed to mount.actual error mssage you can see it in screen shot.

 

[iknowledge]

What is the file system on the hard disk that you are trying to access using Live CD?

 

[nims11]

maybe you have hibernated your windows 7.
if not, then
type df in the terminal to see the currently mounted partitions and their mount points.

 

[sukesh1090]

Its in NTFS format.i have not hibernated it,I just restarted the system and entered ubuntu using usb.i will check and post the result of df.thank you.

 

[coolpcguy]

Boot to Windows, schedule a disk scan, reboot, let the disk scan complete and then reboot into Ubuntu.

 

[sukesh1090]

ok guys here is another screen shot of gpart.which may give more information and that df command returns with an error that "cannot read table of mounted file systems: Input/output error".

 

[sygeek]

Have you tried a cold boot?

 

[sukesh1090]

^^sorry but what does it mean.

 

[nims11]

try this in terminal.
sudo mount /dev/sda2 /mnt
and post the output.

 

[sygeek]

^^sorry but what does it mean.

Turning on the computer after it has been completely powered off.

 

[sukesh1090]

k soory for the late reply.here is the result of sudo mount /dev/sda2 /mnt command,