Hi Attached are serial output from a failed boot of OS5 and OK TEST-ALL At the end of the failed boot: [ 2.116832] UBI: physical eraseblock size: 131072 bytes (128 KiB) [ 2.191370] UBI: logical eraseblock size: 126976 bytes [ 2.275253] UBI: smallest flash I/O unit: 2048 [ 2.322274] UBI: VID header offset: 2048 (aligned 2048) [ 2.370905] UBI: data offset: 4096 [ 4.974054] UBI error: vtbl_check: volume table check failed: record 0, error 9 which is similar output as without the serial adaptor which goes from UBI: data offset: 4096 modprobe no such file or directory modprobe no such file or directory modprobe no such file or directory UBI error: vtbl_check: volume table check failed: record 0, error 9 modprobe no such file or directory modprobe no such file or directory modprobe no such file or directory .... This XO1 has problems turning on which are getting worse, pressing power just lights the power and mic leds sometimes. It still flashes and boots Sugar 0.88 OK though once its turned on. Maybe theres a power supply or EC fault which interacts in some way with UBIFS? Tony > Hi Tony, > > On Sat, Jun 18, 2011 at 11:19 AM, wrote: > >> If you tell us the addresses of the first 10-or-so bad blocks, we > >> could set up a laptop in the same way and try to reproduce. You can do > >> this by booting with the game-key-up cheat code > >> (http://wiki.laptop.org/go/Cheat_codes) and then using the arrow keys > >> to move to the first red block. When you get there it will say > >> something like "28f Marked bad in Bad Block Table". 28f is the > >> address. Then collect addresses of the next 9. > > > > rocker up gave me pong but scan-nand works > > > > bad blocks: > > a > > 1a > > 2a > > 3a > > 4a > > ... the a's through to fa > > > > then ok for a while > > > > the a's �30a thru to 3ba > > the a's �50a thru to 5ca > > > > first bad block thats not 'a' is at 6b1 > > I tried to reproduce this by setting all those bad blocks in my NAND, > but 11.3.0 build 5 still booted fine. I guess you have already > reproduced on this build. > > I marked as bad: > a 1a 2a 3a 4a 5a 6a 7a 8a 9a aa ba ca da ea fa > 30a 31a 32a 33a 34a 35a 36a 37a 38a 39a 3aa 3ba > 50a 51a 52a 53a 54a 55a 56a 57a 58a 59a 5aa 5ba 5ca > 6b1 > and I also have 4 bad blocks of my own. > > Could you give me the address of *all* your bad blocks? > Sorry to be a pain! > > If you have a serial console kit, you could instead hook it up and run > "test /nandflash" from the OFW prompt and simply copy/paste the > results into an email. That test will list all the bad blocks in > numerical form. > > cheers > Daniel > > _____________________________________________________ > This mail has been virus scanned by Australia On Line > see http://www.australiaonline.net.au/mailscanning