Unable to partition main disk MacOsx
Solved
lukep
-
lukep -
lukep -
Hello,
I'm on a 27-inch iMac, mid-2011, running macOS High Sierra.
I'm reaching out because I can't partition my Mac disk. There's only one disk in the iMac, which is 1TB. I want to partition it into 2, with 300GB for the OS and its applications, and the other 700GB for various data.
Every time I try using Disk Utility, it starts the partitioning, but when it gets to copying the booster, it takes 30 seconds and then fails, with the message "POSIX error: the operation could not be completed. Input/output error."
What should I do? Thank you
Configuration: Macintosh / Safari 11.1.2
I'm on a 27-inch iMac, mid-2011, running macOS High Sierra.
I'm reaching out because I can't partition my Mac disk. There's only one disk in the iMac, which is 1TB. I want to partition it into 2, with 300GB for the OS and its applications, and the other 700GB for various data.
Every time I try using Disk Utility, it starts the partitioning, but when it gets to copying the booster, it takes 30 seconds and then fails, with the message "POSIX error: the operation could not be completed. Input/output error."
What should I do? Thank you
Configuration: Macintosh / Safari 11.1.2
1 answer
-
Hello,
I don't have MacOS High Sierra (my iMac is limited to El Capitan), so I don't know if the Disk Utility in High Sierra allows partitioning the boot disk.
On El Capitan, Disk Utility does not allow partitioning the disk that runs the system.
If I had no data to keep on my internal disk, I would go for a system reinstallation because in this mode, partitioning the disk is allowed since the Mac starts from a special partition and not the one where the system is located.
Ritchi
