Mac Os X El Capitan Usb Installer

Posted on 17-11-2021 by admin

Apr 27, 2021 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. You will create the bootable installer from this app, not from the disk image or.pkg installer. Use the 'createinstallmedia' command in Terminal. For an OS X El Capitan installation, the file gets saved as a disk image named 'InstallMacOSX.dmg'. To install, open the disk image and run the installer named 'InstallMacOSX.pkg'. With that out of the way, follow the steps below on how you can clean install OS X El Capitan on your Mac. Create a bootable OS X El Capitan USB flash drive. Follow our tutorial posted here on. Hdiutil interface/Applications/Install OS X El Capitan.app/Contents/SharedSupport/InstallESD.dmg – no verify – no browse – mount point/Volumes/Install Make a DMG Disk hdiutil make – o/tmp/elcapitan – size 7900m – volname elcapitan – design SPUD – fs HFS+J # hdiutil affix/tmp/elcapitan.dmg – noverify – mountpoint/Volumes/elcapitan.

Mac Os X El Capitan Usb Installer Windows
Os X El Capitan 10.11

I am trying to upgrade an older iMac (2008) from OS 10.6.8 to El Capitan for a disabled client who really needs to use a Mac instead of a PC!
EveryMac says it can handle El Capitan if I upgrade RAM. It has 4GB now.
I have an Installer file from my own Mac (always keep them when I upgrade). I made a bootable flash installer that mounts and seems to have the proper files, but it won't show up on either Mac on restart holding option key; nor in the Startup Disk list. So, I figured writing to the flash drive must have failed.
I partitioned an external hard drive and redid this:
'sudo /Applications/Install OS X El Capitan.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install OS X El Capitan.app'
It seems to work (again) in Finder AND it shows up as a boot option on restart (holding option key), but when I select Install OS X I get an error that the installer cannot be verified. I can't get it to work.
So, I figured my installer must have gone bad, even though I successfully upgraded my own Mac with it, and have since upgraded mine to Sierra.
Using the App Store I can get to El Capitan, but it will not allow me to download it on my Mac because the system is too new, and I don't want to download it to the old Mac because I want to use an external drive to do a clean install; not an upgrade on the old one.
Any advice?

IMAC (RETINA 5K, 27-INCH, LATE 2015), macOS Sierra (10.12.3)

Posted on Feb 28, 2017 9:53 PM