The latest generation, Kindle Paperwhite, Kindle Scribe 2, Kindle Scribe 1, and Kindle and the upcoming Kindle Colorsoft, all have something in common. When you plug them into USB into your PC or MAC, they no longer appear as external drives. This prevents users from using file managers to back up their books or to sideload new books onto the Kindle. Amazon has also removed the download and transfer via USB option for purchased ebooks from the content page. This will likely prevent people from stripping the DRM from the books and sharing them on piracy websites. This is not
Oops you’re right, shame one me for not verifying that before posting. I was at work, didn’t have it on me to check, and I couldn’t find the answer online, so I took a guess.
It is still a separate partition from the one the OS is installed to though, which I’m guessing is ext4 since it’s Linux