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[all variants] Which filesystem for an Ubuntu install on a thumb drive?

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http://ubuntuforums.org – Hello, I'd like to install Ubuntu on a flash drive, however I'm unsure which filesystem to use. Instructions on the web almost universally say to use ext2, but that seems like poor advice to me, as those drives generally have no wear leveling and ext2 will cause frequent writes to a few areas on the drive. I understand that some file systems optimized for flash storage such as YAFFS2, JFFS2 and UBIFS cannot be used for thumb drives, but are intended for embedded flash storage. Then there's NILFS2, which is log-structured, however it seems that it wasn't really designed for flash devices and (Hardware)