My new MacBookPro makes a low grinding noise when starting from shutdown. It interferes with the normal startup music. Is this normal or should I take it back to the store, please? Thank you. Colin.

My MacBookPro makes a low grinding sound when it starts up from shutdown. Is this normal or should I return it to the store. The sound is not unlike the CD drive starting in my old computer. It kind of creeks. Thank you. Colin.

If it is a brief sound, perhaps a half second in duration, it may very well be the OS checking the internal optical drive.  That is part of the OS startup process which is normal.  Start your MBP and put your ear next to the optical drive and see if this is the case.
Ciao

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