Answer:
<em><u>Historically, 63 minute/550 MB (12 cm) and 18 minute/158 MB (8 cm) discs were once available but are now rendered obsolete by advances in recording technology. Currently, 74 minute/650 MB, 80 minute/700 MB (12 cm) and 21 minute/185 MB (8 cm) discs are the market standards</u></em>.
<span>Black sockets should be used, but the color is not the reason why. Chrome sockets will cause splits to form in the socket walls pretty quickly, after only a few uses. But the black sockets are that color because they have gone through a process called Parkerizing that coats the surface of the socket in order to provide more resistance when being used and protect the socket against corrosion.</span>
<span>Offline files are stored in [systemdrive]:\windows\csc folder by default</span>
