Hi Scott.
I'm pretty sure it's FAT32.
If look at this replacement video at YT, you'll also see the new drive is beeing formattet to FAT32.
https://www.youtube.com/watch?v=ffeOJUp--1M
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Cheers 🥂
GJ
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"Success is not counted by how high you have climbed
but by how many you brought with you." (Wil Rose)