Problem with HDD - extended partition cannot be undone- help

[madhusudhanan]

i installed Windows7. it won't be booting from Hard disk after the completion of OS... and i can't able to format my drives... can you give me some tips...

 

[nukemaster]

If you had been messing with the partitions and removed the "system reserved" partition. You would leave windows unable to boot.

The windows cd has a Startup repair option that should be able to fix this for you. Worth a shot.