HD RECOVERY , trying to reinstall OS X , But NEED TO UNLOCK DRIVES

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Hello there ,
I Tried rebooting my macbook pro running Mountain Lion , and came across a
Reoccurring Kernel Panic , Got to HD RECOVERY and Did a Verify Disk etc.... and was told disk could not be repaired. I contacted Apple support to help walk me through the process.
he told me I did not have to reformat my drives and reinstall everything .....all I had to do was reinstall OSX and that doing this would not affect any of my data or personal files.
When I Try to reinstall OSX from HD Recovery I get a message telling me Macintosh HD is locked . I asume it means my Admin Password, or a write protect lock of some kind ....
but there is no place for me to enter my admin pass word.
Help Please
Is there a easy step by step to do this from Terminal ? or from Disk utility ?
Thanks
I am dead in the water !
 
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Your Mac's Specs
13" MBP 2.3Ghz i7 32GB 1TB | iPhone XR
Can you get into the Terminal from within the HD Recovery and type:

sudo chflags nouchg /

If that fails try:

/usr/bin/sudo chflags nouchg /
 
Joined
Sep 8, 2007
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552
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Your Mac's Specs
13" MBP 2.3Ghz i7 32GB 1TB | iPhone XR
From there boot up in single user mode, if it lets you boot holding Cmd and S then type:

mount -uw /
chown root /
chmod 1775 /
exit

Give it a shot from there.
 

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