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Old 08-09-2007, 02:28 AM   #1
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File system JFSS2 and cramfs

why do we actually require a file system? What is special about JFSS2 and cramfs? How is file system related to hard disk and flash memory?

Last edited by reuben-decruz; 08-09-2007 at 02:33 AM.
Old 08-09-2007, 09:49 PM   #2
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Cramfs (and squashfs) let you store your files (read only) in compressed form to save space - typically used in embedded systems and live CDs. Space savings might be quite large, factor of 2 or 3.

JFFS is a special file system for flash memory. Too many writes can 'wear out' flash memory. JFFS tries to spread writes evenly over the whole device to maximise its life.


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