Verify Disk Error

[Nsutton]

After attempting to create a partition using disk utilities. It gave me an error so I ran a verify disk based on the error I got an error.

Picture of error: http://img16.imageshack.us/f/macerror.png/

I can't repair the disk because I don't have the install disks on me. But Is this a serious thing or whats wrong with it?

And what are HD blocks?

 

[Hal Itosis]

But Is this a serious thing or whats wrong with it?

It would not be a good idea to let it fester too long.

I can't repair the disk because I don't have the install disks on me.

You can boot into SU Mode and run fsck.