![]() ![]() Volume UUID: F42D6E05-C72C-386A-86AD-635A818E1FE3Ĭapacity: 339.53 GB (339,526,688,768 bytes)Īvailable: 53. 1.To start the process of backing up your Mac to your external drive, take your cursor to the top-left side of your desktop. Vendor ID: 0x0928 (Oxford Semiconductor Ltd.) Suppose the disk was used as a Time Machine backup on your Mac its best to stop Time Machine from backing up to the drive. ![]() Press Command+Space, type Disk Utility, and press Enter to open it. This is an example of the data it prints out for a USB drive: 1394A/USB2.0/eSATA combo drive: You’ll need to use the Disk Utility built into your Mac to work with partitions. To try everything, you could do system_profiler (which lists all data) then search for anything following "Mount Point:" and unmount whatever is after that. It's not perfectly portable across different systems to just do USB then FireWire then Thunderbolt because there could be different connections. Once you parse out the mount points, you can unmount those drives. ![]() system_profiler -listDataTypes will give you all data types. system_profiler SPUSBDataType will give you all USB devices and their mount points, and system_profiler SPFireWireDataType does the same for FireWire devices. You could try using system_profiler with different data types. In the Sidebar tab under the Locations section, tick the box beside External disks. In the General tab, tick the box beside External disks. On the Apple menu bar, click Finder > Preferences. Prtl=`diskutil info $ | grep Protocol | cut -d ' ' -f 21`ġ.Is there a way to identify external drive without using diskutil info? The reason is diskutil info starts up sleeping drive, my script is very slow.Ģ.Are there any much more smart way? I have Googled so much, but I can't find a way which I want. Here’s how to access these settings: Step 1. My disk list is as follows: $ diskutil listģ: Apple_Boot Recovery HD 650.0 MB disk0s3Ġ: Apple_HFS Macintosh HD *496.3 GB disk1Ģ: Apple_HFS Time Machine 999.9 GB disk2s2Ģ: Microsoft Basic Data USB HD 4 749.9 GB disk3s2Ģ: Microsoft Basic Data Backup 499.9 GB disk4s2Ġ: Apple_partition_scheme *122.9 GB disk8ĭiskutil list | grep -oE 'disks2' | while read i I am trying to write a shell script to unmount/mount all external drive on OS X.
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