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現在のバージョン作成者: Dan ,

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At this point you’ll need to create a fresh external bootable drive or better yet a OS installer USB Thumb drive from another Mac system and check it to make sure it boots.
I would recommend you stick with macOS Sierra 10.12.x here as thats the last HFS+ file system release. Later you can upgrade to Mojave or Catalina later if you want.
Now the fun! Apple messed up their OS installer images [https://appleinsider.com/articles/19/10/24/if-youve-got-an-old-macos-install-image-it-will-probably-stop-working-today|If you've got an old macOS install image, it will probably stop working today]
Here’s the needed download for Sierra: [https://support.apple.com/en-us/HT208202|How to upgrade to macOS Sierra] Jump down to Step 4 for the link. Follow this guide to create an OS installer drive [https://www.macworld.com/article/3092900/how-to-create-a-bootable-macos-sierra-installer-drive.html|How to create a bootable macOS Sierra installer drive].
Once you have a good external boot drive or OS installer you can then try booting up your system. This time with the drive connected (and if it needs power powered) restart your system press the Option key on your USB keyboard to get to the Startup Manager drive list so you can select your bootable drive. You should be able to get that far. Let us know how it goes.
-Reference: [[https://support.apple.com/en-us/HT201255|https://support.apple.com/en-us/HT201255]|Mac startup key combinations]
+Reference: [https://support.apple.com/en-us/HT201255|Mac startup key combinations]

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編集者: Dan ,

テキスト:

At this point you’ll need to create a fresh external bootable drive or better yet a OS installer USB Thumb drive from another Mac system and check it to make sure it boots.
I would recommend you stick with macOS Sierra 10.12.x here as thats the last HFS+ file system release. Later you can upgrade to Mojave or Catalina later if you want.
Now the fun! Apple messed up their OS installer images [https://appleinsider.com/articles/19/10/24/if-youve-got-an-old-macos-install-image-it-will-probably-stop-working-today|If you've got an old macOS install image, it will probably stop working today]
Here’s the needed download for Sierra: [https://support.apple.com/en-us/HT208202|How to upgrade to macOS Sierra] Jump down to Step 4 for the link. Follow this guide to create an OS installer drive [https://www.macworld.com/article/3092900/how-to-create-a-bootable-macos-sierra-installer-drive.html|How to create a bootable macOS Sierra installer drive].
Once you have a good external boot drive or OS installer you can then try booting up your system. This time with the drive connected (and if it needs power powered) restart your system press the Option key on your USB keyboard to get to the Startup Manager drive list so you can select your bootable drive. You should be able to get that far. Let us know how it goes.
-Reference: [[https://support.apple.com/en-us/HT201255|https://support.apple.com/en-us/HT201255]Mac startup key combinations]
+Reference: [[https://support.apple.com/en-us/HT201255|https://support.apple.com/en-us/HT201255]|Mac startup key combinations]

ステータス:

open

編集者: Dan ,

テキスト:

At this point you’ll need to create a fresh external bootable drive or better yet a OS installer USB Thumb drive from another Mac system and check it to make sure it boots.
I would recommend you stick with macOS Sierra 10.12.x here as thats the last HFS+ file system release. Later you can upgrade to Mojave or Catalina later if you want.
Now the fun! Apple messed up their OS installer images [https://appleinsider.com/articles/19/10/24/if-youve-got-an-old-macos-install-image-it-will-probably-stop-working-today|If you've got an old macOS install image, it will probably stop working today]
Here’s the needed download for Sierra: [https://support.apple.com/en-us/HT208202|How to upgrade to macOS Sierra] Jump down to Step 4 for the link. Follow this guide to create an OS installer drive [https://www.macworld.com/article/3092900/how-to-create-a-bootable-macos-sierra-installer-drive.html|How to create a bootable macOS Sierra installer drive].
Once you have a good external boot drive or OS installer you can then try booting up your system. This time with the drive connected (and if it needs power powered) restart your system press the Option key on your USB keyboard to get to the Startup Manager drive list so you can select your bootable drive. You should be able to get that far. Let us know how it goes.
-Reference: [https://support.apple.com/en-us/HT201255]Mac startup key combinations]
+Reference: [[https://support.apple.com/en-us/HT201255|https://support.apple.com/en-us/HT201255]Mac startup key combinations]

ステータス:

open

オリジナル投稿者: Dan ,

テキスト:

At this point you’ll need to create a fresh external bootable drive or better yet a OS installer USB Thumb drive from another Mac system and check it to make sure it boots.

I would recommend you stick with macOS Sierra 10.12.x here as thats the last HFS+ file system release. Later you can upgrade to Mojave or Catalina later if you want.

Now the fun! Apple messed up their OS installer images [https://appleinsider.com/articles/19/10/24/if-youve-got-an-old-macos-install-image-it-will-probably-stop-working-today|If you've got an old macOS install image, it will probably stop working today]

Here’s the needed download for Sierra: [https://support.apple.com/en-us/HT208202|How to upgrade to macOS Sierra] Jump down to Step 4 for the link. Follow this guide to create an OS installer drive [https://www.macworld.com/article/3092900/how-to-create-a-bootable-macos-sierra-installer-drive.html|How to create a bootable macOS Sierra installer drive].

Once you have a good external boot drive or OS installer you can then try booting up your system. This time with the drive connected (and if it needs power powered) restart your system press the Option key on your USB keyboard to get to the Startup Manager drive list so you can select your bootable drive. You  should be able to get that far. Let us know how it goes.

Reference: [https://support.apple.com/en-us/HT201255]Mac startup key combinations]

ステータス:

open