I'm running El Capitan and decided to install High Sierra on a clean partition.
After installing Sierra and booting from the Sierra partition, I rebooted from the El Capitan partition and decided I wanted to erase the High Sierra partition.
Now when I open Disk Utility in El Capitan the partition High Sierra is installed on doesn't show, nor does after rebooting.
It's an SSD drive.
In the pie chart I do get it, but when I try do delete it it says, couldn't read partition map.
Any help or ideas?
After installing Sierra and booting from the Sierra partition, I rebooted from the El Capitan partition and decided I wanted to erase the High Sierra partition.
Now when I open Disk Utility in El Capitan the partition High Sierra is installed on doesn't show, nor does after rebooting.
It's an SSD drive.
In the pie chart I do get it, but when I try do delete it it says, couldn't read partition map.
Any help or ideas?
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