Hello, I'm trying to set up tboot on my system. (I already tried this last year, but stopped halfway through due to time constraints).
According to my TODO from last year, I still need to call the command "tpm_nvdefine -i 0x40000001 -s 0x36 -p OWNERWRITE" (all the other relevant nvram areas are already defined, just this one is still missing). However, this command (as well as the corresponding tpmnv_ command) fails with the error "Tspi_NV_DefineSpace failed: 0x0000002d - layer=tpm, code=002d (45), Bad physical presence value". Does someone have an idea how to get around this? My system is a Lenovo Thinkpad T420. Things I already tried, based on random hints on the internet: * Clearing the TPM in the BIOS. * Pressing F9 during BIOS initalization * Holding down Fn during BIOS initalization * Doing all of the above after a cold boot, having removed the battery for a while. At this point, I'm pretty clueless how to proceed. Worse still, I don't recall this being a problem when I defined the other NVRAM areas last year. I'd be extremly grateful for any hints. Regards, Luis Ressel ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ tboot-devel mailing list tboot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/tboot-devel
