I thought I’d look into this. Here’s the result on a Mojave system. I’m starting this with an SD card that already had info-beamer installed, but this is irrelevant for this walk-through. Any other SD card with any content on it should work exactly the same:
First start the Disk Utility and click the View button in the top left corner and select Show All Devices. This is required to not only see the logical volumes on each disk/SD card/etc but also the physical volume (If you want to learn the difference, have a look at https://en.wikipedia.org/wiki/Disk_partitioning).
The SD card should be under External. Mine shows up as named as my SD card reader device (Generic STORAGE DEVICE Media).
The complete SD card needs to be wiped next and all existing partitions (Volumes in OSX speak) must be removed. Right-click on the SD card and then Erase….
BE SURE TO ERASE THE CORRECT VOLUME. This step is irreversible and deleting your hard drive or other attached devices is possible if you are not careful! If you’re uncertain whether you’re deleting the correct device, do NOT proceed!
The next step is to select a partitioning scheme. The Pi only supports Master Boot Record, so be sure to select that. Similarly only MS-DOS (FAT) is supported. The other MacOS and ExFAT option will not work. Name the disk any way you want. info-beamer will later rename it anyway. If and only if you’re sure you’ve selected the correct volume click on Erase.
The result is a completely wiped SD card with a single volume on it. As seen in the following image, the file system used for that volume is FAT32.
I confirmed this on a Linux box. The resulting partition scheme and file system is compatible with the Pi:
The next step is then to extract the
install.zip files into the newly created volume, eject it and insert it into the Pi. That worked perfectly in my test.