Ho 2 Mac e sto scaricando El Capitan dall'app store. Voglio vedere se riesco ad installarlo su un vecchio MacBook Pro che ha una funzione Comando-R rotta che mi impedisce di installare il sistema operativo. (Si dice di contattare il supporto Apple)
Dato che costa $, preferirei vedere se posso semplicemente avviare e reinstallare il sistema operativo in modo pulito.
Come faccio a localizzare e masterizzare El Capitan scaricato in un modo che lo renda avviabile sull'altro mac?
Apple non vende una versione per supporti ottici di El Capitan. Devi utilizzare OS X Recovery o un'unità USB per reinstallare El Capitan, che è relativamente semplice da creare . Tutto ciò che serve è un'unità USB da 8 GB e un computer con OS X. Le istruzioni su come creare un programma di installazione sono disponibili qui: Come creare un drive per l'installazione di Windows XP 10.11 El Capitan avviabile
Making the installer drive
Connect to your Mac a properly formatted 8GB (or larger) drive, and rename the drive Untitled. (The Terminal commands I provide here assume that the drive is named Untitled. If the drive isn’t named Untitled, the procedure won’t work.)
Make sure the El Capitan installer (or at least a copy of it), called Install OS X El Capitan.app, is in its default location in your main Applications folder (/Applications).
Select the text of the following Terminal command and copy it.
sudo /Applications/Install\ OS\ X\ El\ Capitan.app/Contents/Resources/createinstallmedia --volume/Volumes/Untitled --applicationpath /Applications/Install\ OS\ X\ El\ Capitan.app --nointeraction
Launch Terminal (in /Applications/Utilities).
Warning: This step will erase the destination drive or partition, so make sure that it doesn’t contain any valuable data. Paste the copied command into Terminal and press Return.
Type your admin-level account password when prompted, and then press Return.
You may see the message “To continue we need to erase the disk at /Volumes/Untitled. If you wish to continue type (Y) then press return:” If so, type the letter Y and then press Return. If you don't see this message, you're already set.
The Terminal window displays createinstallmedia’s progress as a textual representation of a progress bar: Erasing Disk: 0%... 10 percent...20 percent... and so on. You also see a list of the program’s tasks as they occur: Copying installer files to disk... Copy complete. Making disk bootable... Copying boot files... Copy complete. The procedure can take as little as a couple minutes, or as long as 20 to 30 minutes, depending on how fast your Mac can copy data to the destination drive. Once you see Copy Complete. Done., as shown in the screenshot above, the process has finished.
Createinstallmedia will have renamed your drive from Untitled to Install OS X El Capitan. You can rename the drive (in the Finder) if you like—renaming it won’t prevent it from working properly.
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