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bootable usb sierra installer

  1. C

    MP 1,1-5,1 MacPro5,1 (Mid 2012) boot Opt workaround for USB macOS installer?

    Hi, newbie here I've created a macOS Catalina on USB Flash drive using 'Install macOS Catalina.app' (specific to my device) and the 'createinstallmedia' command. It goes through the process including making disk bootable and mounting it. In order to run the USB installer, I restart but my...
    • claudiop
    • Thread
    • bootable usb sierra installer macpro5.1
    • Replies: 2
    • Forum: Mac Pro
  2. seitsme

    macOS Terminal sudo dd cannot found -ssd format

    After i installed a new 128gb SSD on my macbook late 2009, i used a boot usb with sierra to instal osx... It seems SSD cannot be formated and i get an error <Volume erase failed: Media kit reports not enough space on device> this error needs terminal command to be solved= to write zeroes on...
    • seitsme
    • Thread
    • apfs highsierra bootable usb sierra installer osx installation errors ssd format sudo command not found
    • Replies: 3
    • Forum: Apple Programming
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