i have two possibly related problems with my mid-2012 rMBP, and im hoping someone here has had (and hopefully solved) the same problem. 1. last week my USB thumb drive stopped being appearing in finder. thinking it broken, i went and bought a replacement today. it, however, is also failing to appear in finder. ive tried: - using disk utility with both drives but neither one mounts or is even detected by disk utility (even when booted in recovery mode) - reading them on a windows machine. the old one no longer is recognized in windows either, but the new one is. - reformatting (the new one as both NTFS and FAT32) ...but none of this has made any difference. i still cannot read the drives. i also read a few other posts about how resetting the SMC controller could help, but... 2. my SMC controller doesnt seem to be resetting. as far as i can tell, i am following the instructions. but there is no indication that it is resetting. (i.e. mag-safe light going orange for a sec, which happened the last time i tried resetting the SMC). i am pressing and holding ctrl+shift+option+power, sometimes for a second, sometimes for 10 seconds. sometimes i press ctrl+shift+option just a spilt second before the power, sometimes the other way around. the mag-safe light doesnt change. has this happened to anyone else?