MDF attach error!

[smendoza]

Hi guys,
I try to attach a mdf and i get this error .
I suppose i need run DBCC CHECKDB but if i cant attach the database how i can run this query in it?
Anyone can help me please!

Hopefully you have a good backup. if you don't you can try this, I don't guarantee that it will work but....What you can do is copy the bad mdf and ldf to different location. Then try restoring the MDF without the ldf, if that doesn't work create a new db (mdf and ldf) with the same name, stop the sql server, copy the old mdf and over write the new one but do not the log file. Start the sql server and hope it starts, if it does then run the dbcc checkdb. If it does work you still may have some data lost, some transactions could have not finished processing before the log file got corrupted.