I can copy things on it but I can't read them. When I acquired my Mac I backed it up and reformated it in HFS+ (journaled) from the previous NTFS file format and then. I have been using my Hitachi USB2 harddrive on windows XP without any problem. It does not store any personal data.I've just switched the the wonderful Mac world but I have an issue with my exWindows external harddrive. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. The cookie is used to store the user consent for the cookies in the category 'Performance'. This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category 'Other. The cookies is used to store the user consent for the cookies in the category 'Necessary'. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category 'Functional'. The cookie is used to store the user consent for the cookies in the category 'Analytics'.

These cookies ensure basic functionalities and security features of the website, anonymously. Necessary cookies are absolutely essential for the website to function properly. What to do if you get a ‘sudo: command not found’ error. When you have your identifier use the following command replacing with your identifier: sudo diskutil unmountDisk force /dev/ It will look like ‘disk’ with a number after it. If that command doesn’t work try using: diskutil listįind the drive in the list and make a note of the identifier. Open the terminal application and enter the following command replacing with the name of the drive you are trying to unmount. You can access the terminal from recovery mode, it’s under Utilities -> Terminal. You can try to unmount the drive from the command line. If the error presented through modifying the boot partition, use the boot drive method instead as this one won’t work.

Click first aid to verify and repair or erase to format.

Reboot into recovery mode by holding Command and R whilst the Mac is starting up.

In some cases you can use the Mac recovery partition instead.

Full step by step instructions for this process are available here. Now attempt the task that caused the error again. Once you’ve got your boot drive, run Disk Utility and use the ‘First Aid’ option to verify the disk and repair if needed.

Could not unmount disk apple