Trouble Installing Zorin Lite on Macbook Pro (Retina, 15-inch, Early 2013)

[tanabata]

I've been trying to install Zorin on my Macbook Pro (Retina, 15-inch, Early 2013, currently running the latest version of Catalina), but all the options to Try/Install the OS from the bootable SD card (I don't have a USB drive on me) I've created from the ISOs present the following error:

DMAR-IR: [Firmware Bug]: ioapic has no mapping iommu, interrupt remapping will be disabled

It then enters a register dump and timeout waiting for a hardware cmd interrupt in a never-ending cycle.

Essentially, it's an identical problem to this previous post: but I've been unable to follow the steps provided there. The version of the terminal I'm able to open on both the regular and Lite Zorin ISOs says the following:

Minimal BASH like line editing is supported. For the first word, TAB lists possible command completions. anywhere else TAB lists possible device or file completions.

And it fails to recognize sudo or nano as acceptable commands.

I've spent the past couple days trying to resolve this on my own based on the resources available online (and trust me, I've been doing a fair amount of reading), but I think it's at this point I should say I've done everything I can on my own and ask people here.

[Mr_Magoo]

/etc/default/grub
Add irqpoll and intremap=off into GRUB_CMDLINE_LINUX_DEFAULT.

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash irqpoll intremap=off"

If the machine won't boot, you can do it from the Grub Menu right as the machine is starting up... I'm not sure which key combination brings up the grub menu, but once you've got it up, edit (hit the  e  key) the grub menu to enter the above... it should boot, then you can edit /etc/default/grub to make the change permanent.

Once you've got it booting, I recommend installing Nautilus Admin:
sudo apt install nautilus-admin

Then you can navigate to /etc/default, right-click the grub file, select "Edit as Administrator" and it'll open with administrator privileges.

Once you've edited the grub file, be sure to run:
sudo update-grub

After that, I'd recommend looking for a firware update for your computer.

Check your firmware version... if it's lower than 1.2, then I found this:
https://support.apple.com/kb/DL1705?locale=en_US
"This update is recommended for MacBook Pro (Retina, 15-inch, late 2013) models with NVIDIA graphics."

There's also a 1.3 version:
https://support.apple.com/kb/DL1704?viewlocale=en_US&locale=en_US

There's also a 2.1 version, but I'm not sure if it applies to your machine:
https://support.apple.com/kb/DL1381?viewlocale=en_US&locale=en_US

And a 2.3 version, but again I'm not sure if it applies to your machine:
https://support.apple.com/kb/DL1450?viewlocale=en_US&locale=en_US

And a 2.9 version, but again I'm not sure if it applies to your machine:
https://support.apple.com/kb/DL1593?viewlocale=en_US&locale=en_US

[Ocka]

Gday @tanabata , Welcome to the community!

Try disabling Secure boot In BIOS/UEFI,

Also make sure you have Firmware updated,
Please try RUFUS to create your bootable SD card,
I believe SD cards can be problematic (heat/damaged)

If you still have trouble installing , as you know the next thing is to get a usb stick.
Hope this helps.

Keep us informed.