External disk drive not recognised
I have Mac OS High Sierra 10.13.6. I have bought a new 'Apple' external disk drive. It works on my husband's Mac (same operating system etc) however, it does not show up on my Mac. I have tried Disk utility, it is not there even in shaded lettering. I have made sure it is flat, followed copious advice from the internet and I still cannot get it to work. My computer happily accepts my time machine external drive and iPad, iPhone etc. Help please. Very frustrated that I cannot chat to anyone as I don't know what category the drive fits into and cannot read the serial number on the drive so cannot get any further with Apple help/contact.
iMac, iOS 10.3.3, iOS 10.13.6 actually not in list