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Right-click (or Control +click) the installer, and choose Show Package Contents from the resulting contextual menu. In the folder that appears, open Contents > Shared Support; you’ll see a disk image file called InstallESD.dmg. This dmg file is in essence an ISO file in s slightly different format. We'll need to convert it.
mount | grep /dev/sdb. Enter the command given below to create the USB flash drive installer. Here, an assumption is made that the ISO file name is snow leopard install.iso and the file resides in your Downloads folder. If necessary, make the appropriate substitutions.
Yes, Disk Utility can do this. Use Convert then select your dmg file. In the Save As dialog that follows, select DVD/CD master. Disk Utility will insist on saving the new ISO as a .cdr file, but it is really an ISO. You can rename it to .iso in the Finder, if you like.
Press the Alt Key and hold it during the following steps. Click at the purchased tab. Scroll to OS X Mavericks. Click at the Download button. If you already have OS X Mavericks installed, you will be asked if you want to continue. Click continue. Now, you can release the Alt Key. To get the dmg file: 1.
The easiest way is to right click on the .iso file and select ' Burn Disk Image XXX to Disc... ". This will run Burn app with appropriate settings. When ready, hit the Burn button. Here is longer version for advanced users. Based on this article, you should: Open up Disk Utility. Select the USB key (select the root device, not its partitions).
Improve this answer. answered Feb 13, 2021 at 3:32. TJ Luoma. 20.9k 9 71 114. I wonder if El Capitan can still be downloaded through Internet Recovery. I suppose this depends on the model year of the Mac and the firmware version. Still, might be worth a try. At least this would not require another Mac.
1 Answer. Sorted by: 1. Restore the ISO using Disk Utility to a disk partition (internal or external) then boot from that (hold ⌥ on boot). Share. Improve this answer. answered Jan 15, 2014 at 19:13. grg ♦.
Try your best to get it from reputable website like Apple, CNET, MacUpdate, etc. Secondly, download UUByte DMG Editor and insert a USB drive. Now, import DMG file and click Burn button to burn macOS dmg file to USB drive. Lastly, plug the USB drive into Mac and press Option key to select the drive from startup menu.
Yosemite & Mavericks: The the new InstallESD.dmg is not bootable. Therefore, we need to create a bootable install disk with BaseSystem.dmg. iesd -i /Applications/Install\ OS\ X\ Mavericks.app -o Mavericks.dmg -t BaseSystem. All Macs using Intel Haswell CPU (Macs after 2013) need to fake their CPU as Ivy Bridge in order to boot the virtual machine.
Download macOS. The installer for OS X El Capitan downloads to your Downloads folder as a disk image named InstallMacOSX.dmg. To get the installer: Download using Safari, and open the disk image on a Mac that is compatible with OS X El Capitan. Inside the disk image is an installer named InstallMacOSX.pkg. It installs an app named "Install OS X ...