No bootable device found - please insert bootable disk.

I was going to use boot camp the other day to install a windows on my mac also.  It wass not installing properly so i made the entire partition available for for the mac os only and deleted the windows partition.  But now when  I start the mac up the it goes to a black ascreen and says "No bootable device found - please insert bootable disk."    I can get to my hard drive if I hold the option key down while it is booting.  then it will work but if I let it just boot it does not boot properly.  
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flashactionsAsked:
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kguy18Commented:
Ok try this:

Hold down the command and s key then turn the power on and keep holding it till you get to a black screen with with white text it will then give you a promt that you can type in. Now type this in "fsck -f -y" and remove the "". This will force a file system check. once that is done type exit and it should reboot. Hope that helps.
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flashactionsAuthor Commented:
so botting up with command s did not work for me.  I ended up at the same message.  No boot device - please insert a boot disk.  
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flashactionsAuthor Commented:
Can I run the disk check from within mac os?  probably in the terminal right?
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kguy18Commented:
I thought you couldnt get into mac os x?
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flashactionsAuthor Commented:
Im sorry about the way I worded it.  
this is what I said
"  I can get to my hard drive if I hold the option key down while it is booting.  then it will work but if I let it just boot it does not boot properly.  "

this is what I meant.  
I am able to get into  the mac os by holding down the option key while it boots up, and then selecting the hard drive.
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kguy18Commented:
Ok ya you can do a repair disk and repair disk permissions in disk utility (Applications > Utilities > Disk Utility) Try that.
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flashactionsAuthor Commented:
I had to go to system then startup disk and just selsect the hard drive and save.  fixed it good.  
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flashactionsAuthor Commented:
I found the answer
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