To follow up my last email, I have been running my test system for three days the i am currently running at 100% capacity have lost the ability to write files to the disk. So I am delving deeper into the YAFFS2 code to try to see what is causing the problem. Here is some output from the dead partitons. Thanks, Lance cat /proc/yaffs Device 1 "yaffs 1 " startBlock......... 0 endBlock........... 1279 chunkGroupBits..... 1 chunkGroupSize..... 2 nErasedBlocks...... 5 nTnodesCreated..... 8900 nFreeTnodes........ 73 nObjectsCreated.... 4800 nFreeObjects....... 103 nFreeChunks........ 687 nPageWrites........ 0 nPageReads......... 0 nBlockErasures..... 0 nGCCopies.......... 0 garbageCollections. 0 passiveGCs......... 0 nRetriedWrites..... 0 nRetireBlocks...... 0 eccFixed........... 0 eccUnfixed......... 0 tagsEccFixed....... 0 tagsEccUnfixed..... 0 cacheHits.......... 0 nDeletedFiles...... 0 nUnlinkedFiles..... 9 nBackgroudDeletions 0 useNANDECC......... 1 isYaffs2........... 1 root@(none):~# df -h Filesystem Size Used Avail Use% Mounted on rootfs 178M 115M 63M 65% / /dev/root 178M 115M 63M 65% / tmpfs 31M 0 30M 0% /dev/shm /dev/mtdblock/4 160M 160M 604k 100% /nand root@(none):~# root@(none):~# cat /proc/partitions major minor #blocks name 31 0 364544 mtdblocka 31 1 4096 mtdblockb 31 2 10240 mtdblockc 31 3 256 mtdblockd 31 4 327680 mtdblocke 31 5 327680 mtdblockf root@(none):~#