Macbook not reading my external disc drive

[Samlaptop]

I have the latest 2013 MacBook Pro Retina all up to date and it won't recognise my Samsung External drive anymore. I put a disc in and it's all wired up with a USB and it's not recognising it. Any ideas on how I could fix this issue?

 

[simsaladimbamba]

• Tried all two USB ports?
• Tried a different USB cable?
• Is it using an external power supply?
• Have you tested the drive on another computer?
• When connected and a disc is inside, what does Disk Utility have to say?
• Does it show up in System Information > Hardware > Disc Burning or USB?

 

[Samlaptop]

Yep. I tried it on another computer and it works but it wouldn't work on my Mac. It has been working before.

 

[Macman45]

Try another DVD unit. If that works, the Samsung is probably u/s. If you've tried different cables and ports, that about narrows it down to the Mac or the DVD drive....I hope it's not the Mac

 

[Samlaptop]

Try another DVD unit. If that works, the Samsung is probably u/s. If you've tried different cables and ports, that about narrows it down to the Mac or the DVD drive....I hope it's not the Mac

I only have that DVD unit.

 

[Macman45]

I only have that DVD unit.

Can you try it on a friends Mac? If it works on that you'll know.

 

[Bruno09]

Does it use an external power supply ?

If not, do a SMC reset on the Mac (the USB power delivery is under control of the SMC).