Hi Terry, > Are you suggesting that three different SD Cards that works perfectly > every time on a Raspberry Pi could be susceptible to failure when > plugged into a Zero, because of the load caused by the WiFi driver? > (I use the same WiFi dongle on the Pi 2.)
Yes. :-) Pi 2 v. Pi Zero: four cores v. one; USB hub v. SoC's sole port. I think that's different enough that a comfortable load for Pi 2 might exacerbate Pi Zero software bugs. > Wouldn't that show up for other Zeros and be all over the forums, > unless it's caused by a fault on my particular Pi? There's lots of "Pi Zero crashes during install" posts around the place. No more than all the other Pi models, but it's a problem. Few solved. Known problems with Raspberian Jessie drivers and particular network interfaces are pointed out in some of the threads I've skimmed. That's why preparing the SD card for a non-network install and removing the USB wifi adapter would be worth a try; remove as much extraneous hardware as possible > Never forgetting that I've had this working on the Zero occasionally > (although I installed to the SD Card on the Pi). Sure, suggests it's not a deterministic problem. > > (They're flawed, I think, in that the check of the card's contents > > might use buffered blocks in memory rather than access the card. > > Best to skip the check, go straight to the "sync", eject the card, > > re-insert, then do the check.) > > Wouldn't this also be an issue with the Pi 2? Yes. I'm saying the Unix instructions look flawed regardless of Pi model; it's not necessarily reading from the card during the check. (Pulling back the whole card's content so it then needs truncating, and then using diff(1) instead of cmp(1) directly with the card and ignoring the "EOF on image" also seems longwinded.) Cheers, Ralph. -- Next meeting: Bournemouth, Tuesday, 2016-02-02 20:00 Meets, Mailing list, IRC, LinkedIn, ... http://dorset.lug.org.uk/ New thread: mailto:dorset@mailman.lug.org.uk / CHECK IF YOU'RE REPLYING Reporting bugs well: http://goo.gl/4Xue / TO THE LIST OR THE AUTHOR
