Live CD on an USB Stick (32-bit EFI, 64-bit Linux)A friend of mine is using his old MacBook Pro from the year 2006 up to this date (December 2019). Unfortunately he gets an error message from his banking website, that his Firefox browser is to old and a security risk. It is actually the only website, that is complaining. I like the idea of protecting the environment by using everything quite long (last MacBook Pro of mine was 2010-2018, current is a used one from 2012).
One idea was to give him another more up to date browser for his MacOS X Lion, but nothing worked. Then I though about using an Live CD. But the newest, that I was able to boot and had lying around was Ubuntu 12.04. I burned quite a lot DVDs but I did not recognize that his DVD drive stopped working along the way. Then after some reading on the reFind website I figured out, that everything is related to the 32-bit EFI bootloader, that is needed. The Linux itself can then be a 64-bit version.
Then I stumbled across the website of Matt Gadient. He offered some Linux images, that are 64-bit versions but a few bytes in the bootloader are changed, so that the old Macs grab the 32-bit EFI loader. To quote him on the Mac models:
Before reading further: Make sure you’re in the same boat!These tend to be all of the Core2Duo models from late 2006. More specifically:
Matts page is quite long - especially caused by comments. To sum it up: The broken DVD drive seems to be quite common. Matt mostly suggests using an external CD drive or to remove the harddisk, install a Linux with another PC on it and put it back. But then I found one really interesting comment, that mainly consisted of a link to a very cryptic PDF on how to boot these Macs with a USB Live Linux Stick. After a lot of hours I found a reproduceable way to make such a stick in just 10 minutes. I tested it with
- Grab a USB stick that is not to cheap, otherwise you might end with an error like this: - Start a Linux distro of your choice (e.g. Manjaro 18.1.3) on another PC
- Start a terminal and type
lsblk- Plug in your USB stick without any important data (All will be lost!) and type
lsblkagain and compare it to the last output. The difference between the outputs are caused by the newly inserted stick. Mine is called
It is extremly (!) important, that you alter all of my commands written here appropriately if you have another drive expression than
- Start a Terminal and type:
sudo dd if=/dev/zero of=/dev/sdband quit this process after about 10 seconds by pressing Ctrl+C a few times. This process completely erases all partitions and the boot-record on the stick.
- Now we have to give the whole stick the "Master Boot Record" (
sudo fdisk /dev/sdb- Next we are going to put a small EFI boot partition on the stick:
sudo fdisk /dev/sdbNow think about for a short while: What will be the largest Linux Live ISO, that you will put on this stick. I will only use Lubuntu, which is about 1.1 GB, so (on my small 2 GB stick) 1700MB is enough for me. If you want more space and have a larger Stick you might want to replace the 1700 in the next section.
- We are going to change the first partition to a real EFI-boot partition and make another partition for the Lubuntu:
sudo fdisk /dev/sdb- Start the Programm GParted
- Click GParted - Refresh devices
- Click GParted - Devices - /dev/sdb
- Right-click first partition - Format as - FAT32
- Click on the "Apply all operations" checkmark
- We have to mount the drive manually, because Linux does not mount the EFI partition type automatically:
mkdir /tmp/sdb1- The fastest way to create some nested folders:
sudo mount -o rw /dev/sdb1 /tmp/sdb1
sudo mkdir -p /tmp/sdb1/boot/grub/- Now we tell the GRUB bootloader to search for the
sudo mkdir -p /tmp/sdb1/efi/boot/
sudo nano /tmp/sdb1/boot/grub/grub.cfg- Copy the following lines into the nano-editor, that just opened:
search --file --set=root /boot/grub/loopback.cfg- Now quit it with Ctrl+X and write changes.
- Download https://github.com/jfwells/linux-asus-t100ta/blob/master/boot/bootia32.efi
- Copy this file from your download folder and unmount the drive:
sudo cp /home/stefan/Downloads/bootia32.efi /tmp/sdb1/efi/boot/- Put the ISO image on the second partition of the stick:
sudo umount /tmp/sdb1
sudo dd if=/path/to/lubuntu.iso of=/dev/sdb2 bs=1M
Testing the Stick- Put it into the USB of the old Mac
- Switch it on with the Power button and immediately afterwards, press and hold the Alt-Key until 2 drives appear on a grey screen
- Select the EFI and press Enter
- Now it takes a minute until a menu appears with "Try Ubuntu ..." - Press the key e
- A very basic editor opens with 2 important words on the screen:
These are bootoptions. There are lots of them and using a search machine should reveal a site, that is as helpfull as my german page. Most of the times I used:
quiet nomodeset nosplashIf you have plenty of ram (>=3 GB) you could load the whole stick to RAM and eject the stick it after the Linux has started:
quiet nomodeset toram nosplash- Press fn+F10
- Wait for some minutes
Some hints for my german fellows# Deutsche Tastatur
Add ... Panelitems
Keyboard layout handler
Rechtsclick Amerikanische Fahne
Keyboard ... Settings
Häckchen weg "Keep system layouts"
# Aktuellster Firefox
Die nachfolgende Zeile über Edit - Copy kopieren
sudo apt update && sudo apt install firefox
Start - System Tools - LX Terminal - Rechtsklick - Paste
Firefox - Hamburger - ublock in Suchfeld - Add ...