Can't mount core storage logical volume on OS10.14.3

Model --MBP mid 2012 (non-retina) I just replaced my 500 G HDD with an 120G SSD. And made 500G HDD in place of SuperDrive. my secondary drive. I made two partitions in that "Home " and "Untitled" and now I cannot seem to mount "Untitled". Neither can I erase it nor restore it. Also, First Aid fails. I did an SMC + PRAM reset. I have included additional information

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Additional info:

Posted on Feb 22, 2019 12:25 PM

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Can't mount core storage logical volume on OS10.14.3

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