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==Recommend File System for Linux Use==Avoid journaled file systems with a USB stick because they do many more write and reads to do the jounaling. USB sticks only have a limited life. Ext4 is the often recommended file system for USB flash media, however, it is a journaling file system. Ext4 is the default file system on most Linux distributions. If you’re formatting an external drive you want to share with other operating systems, you shouldn’t use Ext4 because Windows, macOS, and other devices can’t read Ext4 file systems without the use of 3rd party drivers.So, Ext3 is a journaling filesystem, and if installed to boot from the flash media, it will increase i/o activity. What is Journaling? It is a means to prevent data corruption from crashes and sudden power loss. Every modern file system supports journaling. File systems that don’t offer journaling are available for use on removable flash drives, where you don’t want the higher overhead and additional writes of journaling.