Apple released the new Mac OS X 10.10 Yosemite in the Mac App Store for everyone to download and install for free on October 16th, 2014, but downloading a 5+ GB file for each of your computers will take some serious time. The best thing to do is download it once and create a bootable install USB drive from the file for all of your Macs.
Jul 08, 2011 Solution: Re-dowload OS X Lion, Open Disk Utility, locate InstallESD.dmg file from SharedSupport folder and double click it (Automatically the InstallESD.dmg and Mac OS X Install ESD is going to mount in the Disk Utility application on the left side), Drag the Mac OS X Install ESD file to the Source and Drag your usb partition (if you have more.
Jan 10, 2017 Since I did not have my original install disks on hand, and the 2010 MBP can run Mac OS Sierra, I went the route of a bootable USB drive. Create a bootable installer for macOS - Apple Support. I put the OS installer on a 16GB USB stick and plugged it into the 2010 Macbook Pro. Upon booting, it did not read the stick, so I reset the PRAM and SMC.
More detail might help. It's actually easier to install Linux to a blank hard drive than it is to install it to one that already has stuff on it, because you do not have to delete or resize any partitions. The short version is to download an *.iso of the distro you want to install and burn it to a CD/DVD. Be sure to use the 'burn image' tool in your burning program, which will take the *.iso and recreate the install media; don't fall into the trap I did once of just copying the *.iso to the disc; all that gives you is a copy of the *.iso file, not a functioning install disc. Then, on the computer to which you wish to install Linux, boot to the disc (you may need to enter the BIOS or 'setup' to tell the computer to boot from the CD/DVD drive before it tries to boot from the hard drive). Some computers, during initial boot, give you a dialog to 'Press F[something] to choose a boot device.' Others, during initial boot, give you a dialog to 'Press F[something] to enter setup'; in that case, 'setup' means the BIOS settings. Once you've booted to the disk, follow the prompts to partition and format the hard drive and install the OS. The website for the distro you wish to install should provide instructions for the install process for that particular distro.
Reinstall from macOS Recovery
Jul 20, 2011 Existing Mac owners faced with a completely blank drive will have to reinstall Snow Leopard first, or install Lion from self-made DVD or Apple-sold USB key. Sep 06, 2019 Have read your article on how to get mac OS onto a blank SSL (in my case in a 2011 Mac mini that won’t boot into Recovery mode.) with an installer USB drive. Unfortunately, you do not address the problem of being unable to download the High Sierra installer from the App Store to a working Mac running under Catalina.
macOS Recovery makes it easy to reinstall the Mac operating system, even if you need to erase your startup disk first. All you need is a connection to the Internet. If a wireless network is available, you can choose it from the Wi-Fi menu , which is also available in macOS Recovery.
Install Mac Os X From Usb
1. Start up from macOS Recovery
To start up from macOS Recovery, turn on your Mac and immediately press and hold one of the following sets of keys on your keyboard. Release the keys when you see an Apple logo, spinning globe, or other startup screen.
Command (⌘)-R
Reinstall the latest macOS that was installed on your Mac (recommended).
Option-⌘-R
Upgrade to the latest macOS that is compatible with your Mac.
Shift-Option-⌘-R
Reinstall the macOS that came with your Mac, or the closest version still available.
You might be prompted to enter a password, such as a firmware password or the password of a user who is an administrator of this Mac. Enter the requested password to continue.
When you see the utilities window, you have started up from macOS Recovery.
2. Decide whether to erase (format) your disk
You probably don't need to erase, unless you're selling, trading in or giving away your Mac, or you have an issue that requires you to erase. If you need to erase before installing macOS, select Disk Utility from the Utilities window, then click Continue. Learn more about when and how to erase.
3. Install macOS
When you're ready to reinstall macOS, choose Reinstall macOS from the Utilities window. Then click Continue and follow the onscreen instructions. You will be asked to choose a disk on which to install.
If the installer asks to unlock your disk, enter the password you use to log in to your Mac.
If the installer doesn't see your disk, or it says that it can't install on your computer or volume, you might need to erase your disk first.
If the installer is for a different version of macOS than you expected, learn about macOS Recovery exceptions.
If the installer offers you the choice between installing on Macintosh HD or Macintosh HD - Data, choose Macintosh HD.
Please allow installation to complete without putting your Mac to sleep or closing its lid. During installation, your Mac might restart and show a progress bar several times, and the screen might be empty for minutes at a time.
If your Mac restarts to a setup assistant, but you're selling, trading in, or giving away your Mac, press Command-Q to quit the assistant without completing setup. Then click Shut Down. When the new owner starts up the Mac, they can use their own information to complete setup.
Install Mac Os From Usb
macOS Recovery exceptions
Install Os Mac Os From Usb Onto Blank Hard Drive Windows 7
The version of macOS offered by macOS Recovery might vary in some cases:
If macOS Sierra 10.12.4 or later has never been installed on this Mac, Option-Command-R installs the macOS that came with your Mac, or the closest version still available. And Shift-Option-Command-R isn't available.
If you erased your entire disk instead of just the startup volume on that disk, macOS Recovery might offer only the macOS that came with your Mac, or the closest version still available. You can upgrade to a later version afterward.
If your Mac has the Apple T2 Security Chip and you never installed a macOS update, Option-Command-R installs the latest macOS that was installed on your Mac.
If you just had your Mac logic board replaced during a repair, macOS Recovery might offer only the latest macOS that is compatible with your Mac.
Download Mac Os To Usb
If you can't get macOS Recovery to offer the installer you want, you might be able to use one of the other ways to install macOS.
Install Os Mac Os From Usb Onto Blank Hard Drive Mac
Other ways to install macOS
You can also install macOS from the App Store or Software Update preferences. If you can't install macOS Catalina, you might be able to install an earlier macOS, such as macOS Mojave, High Sierra, Sierra, El Capitan, or Yosemite.
Or create a bootable installer disk, then use that disk to install macOS on your Mac or another Mac.