1. Shift-key (Safe mode) T (Target Disk mode): you whole drive can be seen by another Mac/PC as a HD. This works with FireWire. crarko adds: And now Thunderbolt as well. Clone the disk first if you don't have the backup of data (I use Data Rescue). Not being able to mount the drive, I could not copy my files before trying the fix by any.
2. Choose Finder Secure Empty Trash to delete the file. Restart the system. Block or Disable USB Port on Mac OS X by unloading the Kernel Extension. USB storage devices can also be blocked or disabled by unloading the USB storage input /output kernel extension (.Kext file ).The USB kext on OS X is loaded at the time of start of the system, this can be loaded / unloaded using.
3. Note: If you have to recover formatted USB drive data on Mac, then you can make use of this Mac Data Recovery software, which will easily get back files from the USB drive. Not only this, even when the USB drive is corrupted, or inaccessible, you can recover data. The tool also supports formatted external hard drive recovery on Mac system.

• Mac Os X Mount Usb Drive Single User Mode Windows 10

Turn off the target MAC, insert the Bootable OSX USB Drive, turn on keeping the Option key pressed to be able to select from where to boot. BTW click here for more OSX startup options. From the options choose Disk Utility and select the 'Macintouch HD'. Click on Verify and if needed click on Repair Disk after. Reboot in Single User mode (Command + S) Enter the following commands, fsck –fy mount –uw / Create a directory to mount USB Drive. Mkdir /Volumes/usbmnt Before plugging in the USB Drive, get the list of 'disk' devices available by running the command. Ls -l /dev/disk. Plug in the USB disk.

Mac Os X Mount Usb Drive Single User Mode Windows 10