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January 22, 2020 11:28
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Repairing damaged external drive (flash drive) on OS X
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| # If "Disk Utility" can't erase a demaged disk and throw errors, like these: | |
| # a) "-69888: Couldn't unmount disk"; | |
| # b) "Couldn't modify partition map". | |
| # You can repair disk (if it is damaged partially, just by a program error, while changing partition map of a disk in) by | |
| # FULL ERASING OF A DISK - you can do that ONLY in A COMMAND LINE, using "diskutil" command (on OS X) | |
| # 1. Firstly you must get path of a drive in a system, like this: | |
| diskutil list | |
| # Than complete erasing of a disk: | |
| diskutil eraseDisk free EMPTY /dev/disk4 | |
| # where "/dev/disk4" is a disk path, gotten on a previous step! | |
| #For more information, you can look to the source of a method: https://discussions.apple.com/thread/8132218 |
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Hi, Im not able to erase the data from my pendrive, Im facing Unable to begin erase operation: A writable disk is required (-69772)