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Identify Mac issues via Disk Utility and Terminal commands.

Identify Mac issues via Disk Utility and Terminal commands.

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hannor0408
Junior Member
3
01-19-2026, 09:44 PM
#1
This week has been challenging for my 2010 MacBook. Almost everything was failing with errors. It began when I tried to install Windows. I accidentally deleted MacOS by mistake. Please note, all actions were performed in macOS recovery mode. Thankfully, it helped. However, the installation didn’t go smoothly. When attempting to install High Sierra on the internal disk, it reported “this disk is not journaled.” I used Disk Utility to journal the disk, but it still said “MacOS cannot be installed on this disk.” That’s where things got confusing. I tried erasing or reshaping the disk, but received an error about insufficient space: “media kit reports not enough space.” I found a suggestion online using the terminal command. I ran a command to clear space, but it failed because “sudo:command not found,” leaving me stuck and frustrated. The issues keep appearing, making it hard to move forward.
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hannor0408
01-19-2026, 09:44 PM #1

This week has been challenging for my 2010 MacBook. Almost everything was failing with errors. It began when I tried to install Windows. I accidentally deleted MacOS by mistake. Please note, all actions were performed in macOS recovery mode. Thankfully, it helped. However, the installation didn’t go smoothly. When attempting to install High Sierra on the internal disk, it reported “this disk is not journaled.” I used Disk Utility to journal the disk, but it still said “MacOS cannot be installed on this disk.” That’s where things got confusing. I tried erasing or reshaping the disk, but received an error about insufficient space: “media kit reports not enough space.” I found a suggestion online using the terminal command. I ran a command to clear space, but it failed because “sudo:command not found,” leaving me stuck and frustrated. The issues keep appearing, making it hard to move forward.

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emmylee33
Senior Member
710
01-20-2026, 03:42 AM
#2
You're currently in recovery mode, so no need for sudo privileges. For Disk Utility, you might try using the terminal version called "diskutil." I've encountered issues with space constraints, but using diskutil tends to work better. It seems you're likely using macOS Internet Recovery, as wiping would erase the original recovery partition. Let me know how it goes and we can continue from there.
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emmylee33
01-20-2026, 03:42 AM #2

You're currently in recovery mode, so no need for sudo privileges. For Disk Utility, you might try using the terminal version called "diskutil." I've encountered issues with space constraints, but using diskutil tends to work better. It seems you're likely using macOS Internet Recovery, as wiping would erase the original recovery partition. Let me know how it goes and we can continue from there.