![Camtasia studio 8.5.1 build 1962](https://knopkazmeya.com/10.png)
![tried to erase a mac drive got could not unmount disk tried to erase a mac drive got could not unmount disk](https://i.ytimg.com/vi/Lixzk7_BCps/maxresdefault.jpg)
- Tried to erase a mac drive got could not unmount disk install#
- Tried to erase a mac drive got could not unmount disk software#
You cannot erase the drive that you have booted from. Unfortunately Apple's article neglects to show the best way to securely erase a hard drive (Apple's instructions are fine if you are using an Apple SSD due to how SSDs work differently than a hard drive), but if you follow my advice to first enable Filevault and letting the encryption process finish, then the rest of Apple's instructions for erasing and reinstalling macOS will be just fine since your data will have been destroyed when the Filevault encryption key is destroyed when using Disk Utility to erase the drive.Įdit: I should add that you must be booted from external media in order to erase the drive. Here is an Apple article on what you should do to prepare a Mac for sale or disposal:
Tried to erase a mac drive got could not unmount disk install#
It should also be possible to boot into Internet Recovery Mode using Command + Option + R, but Apple's information on this is a bit confusing for an older system only running macOS 10.10 and many people have posted issues when using local recovery mode to perform a clean install like this. Using the bootable macOS USB installer is best since you will be erasing the drive and will want to reinstall macOS for the new owner in order to show the laptop is functional. I then recommend creating a bootable macOS 10.11 El Capitan USB installer using these instructions (read them carefully as there are multiple steps to extract the installer to the Applications folder): The encryption process can take a day or more depending on the health of the drive.
![tried to erase a mac drive got could not unmount disk tried to erase a mac drive got could not unmount disk](https://tips2fix.com/wp-content/uploads/2020/11/Screen-Shot-2018-02-26-at-5.37.52-PM.png)
Since you have a hard drive I recommend enabling Filevault and let the Filevault encryption process complete.
Tried to erase a mac drive got could not unmount disk software#
MagicISO is software which can mount virtual drives from ISO images. A background process called QuickLookSatellite, which manages some aspects of generating previews for QuickLook in the Finder and elsewhere, had stalled.It appears you have just a single hard drive installed in your Mac. No need to search and buy commercial software that supports this format: one app. The Macworld reader who reported this problem and that the solution worked for some drives had to use an additional bit of troubleshooting to fix another. The disk number appears in a couple of places in the utility’s output. Reconnect the drive and power it up if necessary. When I try to run Disc Utility, I get a spinning wheel and nothing happens until I take the USB cable. drive on Mac, I tried almost all the ways possible to get the data back. I connect the drive and the light flashes but nothing appears on my desktop or finder window. I do not know why people accidentally erased hard drive on Mac, but I can learn. Recently, my Mac won’t recognize it anymore. Power down the drive if it has a power switch. Last winter I bought a WD EasyStore external HD to use as a Time Machine back up for my MacBook Pro.
![tried to erase a mac drive got could not unmount disk tried to erase a mac drive got could not unmount disk](https://i.imgur.com/3aYZ5XW.jpg)
(replace diskX with the number of the disk, like disk3). Unfortunately Apple's article neglects to show the best way to securely erase a hard drive (Apple's instructions are fine if you are using an Apple SSD due to how SSDs work differently than a hard drive), but if you follow my advice to first enable Filevault and letting the encryption process finish, then the rest of Apple's instructions for erasing and reinstalling macOS will be just fine since your data will have been destroyed when the Filevault encryption key is destroyed when using Disk. You may see multiple entries that start the same (as in the figure), such as disk3, disk3s1, and so forth. In the resulting list, find the disk number associated with the unmounted volume. Plug the drive in and power it up if necessary.
![Camtasia studio 8.5.1 build 1962](https://knopkazmeya.com/10.png)