Another situation could be that the external hard drive was earlier formatted with Windows NT file system (NTFS) but after macOS Mojave update the hard drive went into read-only mode. The permissions “You can only read” on the external hard drive is likely to arise from an unsupported drive update or the more likely to be manufacturers bug. Check your startup hard drive Get Info and you will find similar settings, which halts any WRITE changes to the disk. macOS not allowing you to change the permission since it considers the disk to be too important to be messed with. Sharing & Permissions: You can only read.The problem may solve in this particular step. ![]() Change the permissions to “ Read and Write” for this external hard drive. Check the external hard drive permissions through Get Info window popup.Connect the external media again and press “ Command + I” to launch its GET INFO.Unplug the external hard drive and restart MacOS.Note: these helpful tips are hit-and-trial. If you are one of those users who is going through the dilemma of unlocking external hard drive on MacOS Mojave or High Sierra, then follow below relief points. Unlocking Hard Drive on macOS Mojave & other OSXĪfter a macOS Mojave 10.14 upgrade some hard drive may show unexpected behaviour, particularly hard drives get locked for no good reasons even without the encryption. The hard drive will no longer be password protected after decryption, but all the hard drive data will go lost. Remember if you have forgotten your password then you will have to use Terminal commands to destroy the encryption. Watch the below video to see how this data recovery applications work on encrypted disk drives. ![]() And of course, you should never lose this password from your memory since if you forget the password then the encrypted hard drive and its data will become inaccessible forever.Ī few data recovery software (like Stellar Data Recovery Professional for Mac) supports the recovery of deleted files from an encrypted hard drive on Mac. The password should be such that even the closest of the person around you could not guess it. The password taken for the external hard drive encryption should be strong and consists of alphanumeric characters. Once the external hard drive is password protected, you can connect the drive to Mac and access it every time with the password you have chosen to unlock it. MacOS provides you with a mechanism that puts a secure password on the external hard drive to limits its access from multiple users.
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