It is really sad for me I was running OSX Lion 10.7.5 on my dell inspiron N5010 and update it to Mountain lion 10.8.2 successfully. Right this point my hard disk dumped and then I was unable to sign in to my OS X parttion. So i have decided to make a fresh installation. But no success

. When I start installation it shows me "Some features of OS X Lion are not supported for the disk Macintosh"
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More than 50 times I had installed os x on this HD. Never saw this type of error before.
I never backup my osx. So if i clic on customize, get nothing to backup.
If anybody face such problem please help me, how can I overcome?