DID IT
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* I formatted ext3 and sliTAZ is already saving changes.
* When i installed new application i use "tazusb writefs gzip" and saving rootfs.gz
* I copy file under boot folder and it's working fine.
PROBLEM
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* Problem here when i installed application 125MB is not enough. There is no enough space left for creating new rootfs.fs file.
How can i increase 125MB? Any suggestion?