Feb 08, 2020 See if the 09s will boot to Internet Recovery to skip all that - Cmd/R at the boot chimes will give you Recovery from where you can overlay an OS, or Cmd/alt/R will go online to Internet Recovery which will let you completely start afresh with a new format & fresh install. 09 might be cusp for this functionality, so see if you can get as far as the 'spinning globe' followed by a recovery.

1. May 04, 2020 Categories Guides Tags Download-MacOS-el-capitan, How to Make a Bootable Installer For mac OS X El Capitan Related articles How to Make a Bootable Installer For MacOS Catalina.
2. Mar 24, 2020 OS X El Capitan El Capitan downloads as a disk image. On a Mac that is compatible with El Capitan, open the disk image and run the installer within, named InstallMacOSX.pkg. It installs an app named Install OS X El Capitan into your Applications folder.

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Oct 25, 2015 Select the USB Drive that you want to format for Mac and finally right click on it and hit on Format Disc for Mac. Step-6 (Create Bootable USB drive) Select the USB Drive that you want to make it bootable and finally right click on it and hit on Restore with Disc Image. Select the disc image to restore on usb drive finally hit on OK to continue.

First, review this introductory article: Create a bootable installer for macOS. Second, see this How To outline for creating a bootable El Capitan installer. Simply replace the Terminal command with the one from the preceding article by copying it into the Terminal window. You will need an 8GB or larger USB flash drive that has been partitioned and formatted for use with OS X.

• I have also shared a complete video tutorial on How To Create macOS Catalina Bootable USB on Windows: Step by Step, you can find the video at the end of this post. Step 1: Download the required files to Create macOS Catalina Bootable USB on Windows. MacOSCatalina10.1519A583 by techrechard (Google Drive + MediaFire).
• To make a bootable copy of Catalina on a USB drive, make sure it has at least 12 GB of free memory. Since your USB drive will be formatted in the process, it’s also important to back up the data you store on it.

Drive Partition and Format

1. Open Disk Utility in the Utilities' folder.
2. After Disk Utility loads select the drive (out-dented entry with the mfg.'s ID and size) from the side list.
3. Click on the Erase tab in the Disk Utility toolbar. Name the drive, 'MyVolume'. <---- IMPORTANT!
4. In the drop down panel set the partition scheme to GUID. Set the Format type to Mac OS Extended (Journaled.)
5. Click on the Apply button and wait for the Done button to activate. When it does click on it.
6. Quit Disk Utility.

Create Installer

Open the Terminal in the Utilities' folder. Choose the appropriate command line (in red) depending upon what OS X installer you want. Paste that entire command line from below at the Terminal's prompt:

Command for macOS High Sierra:

sudo /Applications/Install macOS High Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install macOS High Sierra.app

Command for macOS Sierra:

sudo /Applications/Install macOS Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install macOS Sierra.app

Command for El Capitan:

sudo /Applications/Install OS X El Capitan.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install OS X El Capitan.app

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Command for Yosemite:

sudo /Applications/Install OS X Yosemite.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install OS X Yosemite.app

Make Bootable Usb Drive Dos

Command for Mavericks:

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sudo /Applications/Install OS X Mavericks.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install OS X Mavericks.app

Press RETURN. You will be asked for your admin password. It will not echo to the Terminal window. Then press RETURN again. Wait for the return of the Terminal prompt signifying the process has completed. It takes quite some time to finish. Be patient.

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Sep 13, 2018 1:16 PM