This answer explains how to troubleshoot an external hard drive on Mac OSX.*END External Drive Troubleshooting – Mac STEP 1 Check the power and data cable • Check that the power cable is securely connected to the external drive and wall socket (applies only to desktop external hard drives). • Do not connect the drive through a USB hub, connect it directly to the Mac. Make sure the power adapter is connected directly to a wall outlet, not to an extension cord. • Ensure the cable is securely connected to both the drive and computer. • If your external hard drive came with a Y-cable, use both USB connectors to ensure the drive is getting the appropriate power.

• If you are connecting to a Mac, use the USB ports found on the back of the computer. Avoid using USB ports found on keyboards, monitors or the front of the Mac.

I have a WD Ultra 'My Passport' external hard drive and had originally configured it to my MacBook pro, but I just received the surface pro 4 as a gift and I'm trying to use the external hard drive. You may try another USB drive to make sure other devices are working. You can use it to backup all your files on the Mac.

• If the problem still continues, try using a different USB port. STEP 2 Check the Drive Partition using Disk Utility • Click Go on the top menu bar, then choose Utilities and open the Disk Utility application. • If the drive is not on the desktop or if Disk Utility is showing that the drive is formatted in a file system that is not recognized by the Mac OS, the drive can be formatted so the Mac OS will recognize it. STEP 3 Check System Profiler The Mac System Profiler will show you whether the external drive is physically detected by the Mac. • Click on the Apple Menu in the top left corner of your desktop. • Select About this Mac and then click on More Info to open the System Profiler Application.

• When the System Profiler opens click on USB in the left menu under the Hardware category. • If the drive is still not visible, try connecting it to a second Mac to verify the issue. If the drive fails on the second Mac, create an RMA and return the drive under Warranty.• Please click here • If the WD product is no longer in warranty, please visit the to purchase a replacement power adapter or USB cable.

I am having WD My passport Ultra (1tb) and its not recognized in any USB 3.0 ports, after initial one time! If I try my HDD in any USB 2.0 ports its recognized instantly. I tried reinstalling drivers from device manager, but same problem.

PS: In WIN 7 OS, it gets recognized in all USB 3.0 ports as well. Any solutions?I have the same drive with no issues. There is a WD SES Driver that should get installed when this device is hooked up from Windows 10, would be listed below Universal Serial Bus Controllers in Device Manager and only visible when hooked up unless you select under View in the Menu and check 'Show Hidden Devices'. Also shown as WD My Passport in Disk Drives in the Device Manager. Show in Devices and Printers and on taskbar notification area as Safely Remove?

Question: Q: Samsung 850 EVO in Early Macbook Pro. From what I gather, Samsung does have Mac specific firmwares for their 830 and 840 series SSDs. Descriptions says it addresses compatibility issues, which we're seeing here. I'm having a very similar problem with a samsung 850 evo ssd inside a mid 2012 MacBook Pro running. I installed my Samsung 850 EVO 250GB SSD on my Macbook Pro 13' mid 2010 and decided not to enable TRIM. Fast forward 9 months later, i feel my applications might be slightly slowered and my application 'clean my Mac 3' tells me that i need to repair my startup disk. Firmware Update Utility Installation Guide for Mac. 1.25MB DOWNLOAD * Notice: ISO files may be used only via DOS using a bootable CD/DVD. Samsung NVMe Driver(2) This driver supports Samsung NVMe SSD 970 PRO, 970 EVO, 970 EVO Plus, 960 PRO, 960 EVO and 950 PRO. Version 3.1| 4.59MB DOWNLOAD. Step-By-Step instructions to teach you how to swap your old hard disk drive to the modern and sleek Samsung EVO 850 solid state drive! Instructions below. Items needed for this video: a SSD. 1-16 of 111 results for 'samsung ssd for mac' Showing selected results. See all results for samsung ssd for mac. Samsung 860 EVO 500GB 2.5 Inch SATA III Internal SSD (MZ-76E500B/AM) by Samsung. Samsung Solid State Drive MZ-76E1T0E 860 EVO 2.5 SATA III Internal SSD.