Using Windows’ format method means that the resultant UDF drive cannot be recognized on OS X (at least as of OS X 10.10). Merely using newfs_udf on OS X means that the resultant UDF hard drive cannot be recognized on Windows (at least as of Windows 7). How to Create a Bootable Ubuntu USB Drive 1. Format a USB Drive. The first part of the process is to format a USB drive such that it is bootable on a Mac. Find a USB drive, of 2GB capacity or more, and plug it into the Mac. Launch the Disk Utility app which is located in Applications > Utilities. Partition the USB drive. In the left-hand pane.
I try to format a 3TB USB drive with parted and mkfs.exfat for Mac OS X with my Linuxmachine. I use the following commands: parted -a optimal /dev/sdX mktable gpt mkpart primary 0% -1 align-check opt 1 quit parted /dev/sdX print mkfs.exfat -n exFAT /dev/sdX1 The drive is perfectly usable under Linux but when i attach it to OS X it gives me the following error: 'The disk you inserted was not readable by this computer' (formatting a disk with fdisk and mkfs.exfat does work on both Linux and OS X, but only 2.2T then:-( ). Dragon dictation for mac os sierra.
I have a crashed laptop and used the to make a bootable usb drive (32 GB). Hdiutil convert -format UDRW -o /path/to/target.img /path/to/ubuntu.iso diskutil unmountDisk /dev/diskN sudo dd if=/path/to/downloaded.img of=/dev/rdiskN bs=1m It did work and made a read only usb that acted as if it were a CD. I would like to now undo that (in OSx) but disk utility doesn't seem to be able to. When I click 'Erase' it simply fails with 'Erase process has failed' And details reveal Name invalid. Operation failed. Is there a way I can force format this USB drive (to either FAT 32 or OSX Extended) in OSx El Capitan?