Connect the drive directly to your Mac, then use Disk Utility to erase it.
I have just decided to return the drives and replace them with Fantom Drives, which have always been a higher quality, have faster transfer speeds, and seem to last longer. Time Machine can back up to an external USB drive connected to an AirPort Extreme Base Station (802.11ac model) or AirPort Time Capsule. I think it's some type of software issue, I've heard of people having this issue before. Yes, I reformatted both drives to exFat format, as the rest of my drives are.
Use usb disk drive for mac yosemite how to#
You could also try testing the drive for errors, even though it would be quite an unfortunate coincidence for 2 drives to be having issues at the same time: How to test a drive for defects or problems on a Mac. I'd recommend that you check that link and follow all the suggestions, to see if they help you figure out what might be wrong here: WD external hard drive is not powering on or is not recognized on a Mac system. For what it's worth, when I plug in this drive into my working MBP, I see the 'Install OS X Yosemite' get mounted in Finder. UNetbootin allows you to create bootable Live USB drives for Ubuntu, Fedora, and other Linux distributions without burning a CD. The below screenshot shows EFI in Debug mode in Disk Utility. Not sure how to tell if it is a Boot disk or not. Connect the SSD to your Mac system (either externally using a SATA-to-USB adapter or internally in the system).
Use usb disk drive for mac yosemite for mac os#
Do you have any data on them which you need to recover? Are you sure they've been properly formatted for Mac OS X? Below you will see the Disk Utility for the USB drive. TransMac for Windows can open Macintosh format disk drives, flash drives, CD/DVD/Blu-ray media, dmg. Drag the Install Yosemite partition under the USB flash drive to the Destination field. Creating Bootable USB for Mac OS using TransMac. The Source field will be populated with BaseSystem.dmg. I'm really sorry to hear about the problems you're having with those drives. Use Disk Utility to clone the BaseSystem.dmg to the USB flash drive: Select the BaseSystem.dmg in the left-hand pane and click on the Restore tab.
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