Q: Cant 'Partition' new USB drive to make it bootable installer (to create external drive as startup disk)
Cant 'Partition' it. The Partition button is disabled surprisingly. Only 'mount' and 'partition' buttons are disabled. but 'First Aid' & 'Erase' is Enabled.
Just unboxed new 16GB USB3 drive to make it boot ready. ( Upgraded OS from Yosemite to El Capitan 10.11.2 and yesterday I could use 'Partition' command for Internal MacHD & created a test 50GB encrypted partition drive)
I want to do a fresh clean install, so I wanted create this ext backup start up disk before erasing the internal macHD disk.
MacBook Pro with Retina display, OS X El Capitan (10.11.2), New Mac; Setting up req stuffs.
Posted on Dec 12, 2015 2:25 PM
Erase the disk via Disk Utility, and then partition the device — whatever present format was used at the factory is probably lacking the GPT structures that would be expected. This does erase the entire contents of the disk, so make sure there's nothing on the disk you need.
Posted on Dec 12, 2015 7:00 PM
