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Mac couldn t unmount disk Pc#
Mac couldn t unmount disk windows#

When using terminal it is important to type all commands exactly as they appear in this guide. For drives that cannot be disconnected, please make sure you have current backups of those drives. Note: We strongly recommend that you disconnect any externally mounted drives at this point, to prevent accidentally destroying the data on those drives. Please read the notes below before proceeding:

B) If the SSD is not showing up Terminal sould be used to format the drive, which is outlined in the remaining steps.Ĥ) Quit Disk Utility, then from the menu bar open the Utilities menu and select Terminal.

Once the format is complete the SSD is ready for the OS to be installed. You can then name the drive and chose the desired format (APFS is the best choice) and partition scheme (GUID is the best choice).

A) If the SSD does show up you may want to select the drive and click on the Erase tab.

This should allow the SSD to show up in the left column, if it does not show up quit Disk Utility and reopen it. It may take up to 10-15 minutes to complete the boot sequence, depending on internet speed.Ģ) Once at the macOS Utilities menu, select Disk Utility.ģ) In the menu bar at the top of the screen click on the View menu and select Show All Devices. If the computer is not connected to the internet via an ethernet connection it will prompt for a wifi network to be chosen. If the original drive was not upgraded to High Sierra, that should be done first so the internet recovery feature on the computer is updated to High Sierra.Īgain, these instructions are intended for new internal SSDs only, with computers that have already had their original drive upgraded to macOS 10.13 High Sierra.ġ) After the new SSD has been installed into the computer, boot to internet recovery by pressing Command-Option-R until a globe is seen. Although Disk Utility should always be tried first, a Mac’s Terminal can be used to format the drive in these cases. Therefore, it is better to take backup of your important photos and videos before sharing them between both the computers.Recently, some OWC customers have reported experiencing a situation where their new SSD will not show up in Disk Utility in High Sierra.

Mac couldn t unmount disk Pc#

The corruption chances of the external drive increases, if it is used on both Mac and PC systems regularly.Like FAT32, ex-FAT is not a very commonly used file system, due to which its support may vary among third-party devices.Ex-FAT supports maximum volume size up to 128 PiB, and its supported maximum file size is 128 PiB.Therefore, it is better to choose ex-FAT instead. Due to some limitations FAT32 format is not useful for every type of user, and also affects both Mac’s and PC’s performances.

There are specific third-party systems, like Digital Camcorders, and Sony PlayStation 3, which need the drives to be formatted in either FAT32 or ex-FAT format to perform read from and write operation.

Mac couldn t unmount disk windows#

Format your Western Digital My Passport external hard drive to FAT32 or ex-FAT format so to transfer the data between a Mac and Windows system conveniently.Once formatting is done, you can use the drive in macOS or OS X as a regular hard drive.

Now, click the ‘Erase,’ button and wait a few minutes and let the macOS erase data on the drive and reformat it by FAT32 or ex-FAT format.Now, the Erase dialogue window appears, here select the ‘Volume Format’ drop-down list and choose ‘MS-DOS (FAT)’ or ex-FAT File System.’ Note: ex-FAT is a better choice for formatting WD My Passport on Mac.

Click ‘Erase’ on the Disk Utility file menu.When the Disk Utility opens, choose the Western Digital hard drive icon from the sidebar.From the Utilities folder window, select ‘Disk Utility’ application. When the Finder window opens, on the menu bar, select ‘Go’ and then ‘Utilities.’ After that, you will be able to see /Applications/Utilities folder in Finder. Now, a new hard drive icon will appear on the desktop. Connect your Western Digital My Passport drive to Mac computer, and let the OS detect and mount the drive for use.After successful formatting, you can directly save or move files to it like any other external hard drive. Now, again select a ‘Quick Format’ option, then click ‘Start’ option, wait for a few minutes to get your drive reformatted with the FAT32 file system, so that you can use it.