First thing I tried was to search for any possible solutions to read OST files in outlook. But seems like my luck was not with me as there was a minor corruption with the Original OST file. While googling I came across this wonderful tool and this also has a feature to repair and recover an corrupted OST file. 30 minutes later here I am with a perfectly converted PST file , with all my emails arranged nicely as they were earlier! A big thanks to the developers of OST to PST Converter Pro