Help Archives - Mac Bios Unlock https://macbiosunlock.com/category/help Tue, 24 Sep 2024 21:43:44 +0000 en-US hourly 1 https://wordpress.org/?v=6.6.5 https://macbiosunlock.com/wp-content/uploads/2019/09/cropped-Logo-1-32x32.png Help Archives - Mac Bios Unlock https://macbiosunlock.com/category/help 32 32 186719165 How to install a fresh copy of macOS from macOS Recovery (Internet Recovery) https://macbiosunlock.com/how-to-install-a-fresh-copy-of-macos-from-macos-recovery-internet-recovery?utm_source=rss&utm_medium=rss&utm_campaign=how-to-install-a-fresh-copy-of-macos-from-macos-recovery-internet-recovery Wed, 05 Aug 2020 05:08:25 +0000 https://macbiosunlock.com/?p=3374 1. Start up from macOS Recovery To start from macOS Recovery, turn on your Mac and immediately press and hold on of the following sets of keys on your Keyboard. You can release the keys when you see the apple logo with a loading bar.  Command (⌘)-R Reinstall the latest macOS that was installed on […]

The post How to install a fresh copy of macOS from macOS Recovery (Internet Recovery) appeared first on Mac Bios Unlock.

]]>

1. Start up from macOS Recovery

To start from macOS Recovery, turn on your Mac and immediately press and hold on of the following sets of keys on your Keyboard. You can release the keys when you see the apple logo with a loading bar. 

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.

Which versions of macOS does your Mac support?

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.

2. Decide whether to erase (format) your disk.

  • This will erase all the data on the drive. 
  • It is recommended to erase the disk and reinstall a clean version of macOS after installing the new EFI Chip or EFI Card. 
  • Click on Disk Utility and continue. 
  • Select the internal drive from the left panel. Select Show All Devices
  • Click on erase icon and and select the format: MacOS Extended (Journaled). 
  • Close Disk Utility and return to the main menu.

3. Install macOS

  • 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.

Continue the installation. 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. Remember to connect the AC power adapter. 

The post How to install a fresh copy of macOS from macOS Recovery (Internet Recovery) appeared first on Mac Bios Unlock.

]]> 3374 Untrusted_Cert_Title https://macbiosunlock.com/untrusted_cert_title?utm_source=rss&utm_medium=rss&utm_campaign=untrusted_cert_title Thu, 13 Feb 2020 05:40:58 +0000 https://macbiosunlock.com/?p=3156 Here is the fix  In most cases this error message appears if the system time and date is wrong.  Change the system time and date from recovery mode. 1- Click on Utilities and select Terminal   2- Type date and press enter to check the system time and date. The date has been reset back […]

The post Untrusted_Cert_Title appeared first on Mac Bios Unlock.

]]>
    Untrusted_Cert_Title2-min ERROR

    Here is the fix 

    In most cases this error message appears if the system time and date is wrong. 

    Change the system time and date from recovery mode.

    1- Click on Utilities and select Terminal

     

    2- Type date and press enter to check the system time and date.

    The date has been reset back to 2011. We need to change to current date. 

    For example to set the time and date to: Aug 29 2019 12:30

    3- Type: date 0829123019 and press the return key. You will notice the time and date has been changed. 

    You can now exit the terminal and run the installation again. 

    Unlock Mac Firmware Password with Solderless EFI Chip Card

    Solderless EFI Chip Card - Solve NVME

    The post Untrusted_Cert_Title appeared first on Mac Bios Unlock.

    ]]>     3156     How to create a bootable installer for macOS https://macbiosunlock.com/how-to-create-a-bootable-installer-for-macos?utm_source=rss&utm_medium=rss&utm_campaign=how-to-create-a-bootable-installer-for-macos Thu, 21 Nov 2019 04:07:57 +0000 https://macbiosunlock.com/?p=2965 https://support.apple.com/en-us/HT201372

    The post How to create a bootable installer for macOS appeared first on Mac Bios Unlock.

    ]]>     https://support.apple.com/en-us/HT201372

    The post How to create a bootable installer for macOS appeared first on Mac Bios Unlock.

    ]]>     2965     If an installer says it can’t be verified or was signed with a certificate that has expired https://macbiosunlock.com/https-support-apple-com-en-us-ht208052-2?utm_source=rss&utm_medium=rss&utm_campaign=https-support-apple-com-en-us-ht208052-2 Thu, 21 Nov 2019 03:50:28 +0000 https://macbiosunlock.com/?p=2957 The post If an installer says it can’t be verified or was signed with a certificate that has expired appeared first on Mac Bios Unlock.

    ]]>     The post If an installer says it can’t be verified or was signed with a certificate that has expired appeared first on Mac Bios Unlock.

    ]]>     2957     An error occurred validating the installer data. The download is either damaged or incomplete. https://macbiosunlock.com/an-error-occurred-validating-the-installer-data?utm_source=rss&utm_medium=rss&utm_campaign=an-error-occurred-validating-the-installer-data Fri, 13 Sep 2019 06:44:50 +0000 https://macbiosunlock.com/?p=2848 An error occurred validating the installer data. The download is either damaged or incomplete.  This copy of the install macOS Mojave.app application is damaged and can’t be used to install macOS Here is the fix  In most cases this error message appears if the system time and date is wrong.  Change the system time and […]

    The post An error occurred validating the installer data. The download is either damaged or incomplete. appeared first on Mac Bios Unlock.

    ]]>

      An error occurred validating the installer data. The download is either damaged or incomplete. 

      This copy of the install macOS Mojave.app application is damaged and can’t be used to install macOS

      Here is the fix 

      In most cases this error message appears if the system time and date is wrong. 

      Change the system time and date from recovery mode.

      1- Click on Utilities and select Terminal

       

      2- Type date and press enter to check the system time and date.

      The date has been reset back to 2011. We need to change to current date. 

      For example to set the time and date to: Aug 29 2019 12:30

      3- Type: date 0829123019 and press the return key. You will notice the time and date has been changed. 

      You can now exit the terminal and run the installation again. 

       

      The post An error occurred validating the installer data. The download is either damaged or incomplete. appeared first on Mac Bios Unlock.

      ]]>       2848