What file systems are you using on your devices and why?

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en.wikipedia.org/wiki/Comparison_of_file_systems

I want to learn more about file systems from the practical point of view so I know what to expect, how to approach them and what experience positive or negative you had / have.

I found this wikipedia's comparison but I want your hands-on views.

For now my mental list is - NTFS - for some reason TVs on USB love these and also Windows + Linux can read and write this - Ext4 - solid fs with journaling but Linux specific - Btrfs - some modern fs with snapshot capability, Linux specific - xfs - servers really like these as they are performant, Linux specific - FAT32 - limited but recognizable everywhere - exFAT - like FAT32 but less recognizable and less limited

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Ext4 with LVM.

I like BTRFS and it's features but sadly Debian doesn't have a preset for it in it's installer so the only way to use it is to manually partition and I absolutely suck at that.

When you know LVM I think you can manage manual paritioning. :) Especially as btrfs is advertised with snapshots so trial and error is encouraged.

Sorry if this is a dumb question, but have you tried using gParted? GUI, new-user friendly, easy to visualize your system, I've used it for over a decade on multiple devices...