I've been trying with limited success to upgrade my PAW to the latest software version.
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Install SD card back in Mac and check its contents, and then I notice that the os and overlays folders are both empty, but in the ZIP file they have files in them. Strange,
Manually copy the contents of the os folder back over to the SD card, check the SD card has the files in it, it does. Unmount the SD card, remount it, check the os folder and its empty.
Tried several times, deleting and recreating the folders, and each time same thing happens, the os and overlays folders are OK on the SD card, but all the subfolders disappear when I remove the SD card from the card reader (dismounting it properly to ensure all data written to the card).
Found another 16Gb micro SD card, copied the files and directories to it, this time when I unmount and remount the card the os folder retains the Raspbian sub-folder and the overlays folder retains all its subfiles, but the Raspbian sub-folder of os empties itself each time. Since this has the root.tar.gz in it, again sounds fatal.
So either these are both corrupt SD cards (unlikely?), or SD card and sub folders just don't play well on a Mac. I suspect these folders being empty is pretty much going to kill it booting up.
Following up on all my issues with installing the new PAW software on a new 16Gb Micro SD card. Turns out that both the 16Gb SD cards I had were faulty !
After formatting them on a windows PC instead of a Mac I experienced the same issue that files would disappear from the subfolders after copying. After repeated runs of Windows drive check I managed to eventually clear all the drive corruptions and had a 'stable' drive that files didn't disappear from, so maybe I'll use it for music songs but certainly not going to run something as important as PAW on it.
Brian Montilla kindly lent me a spare new card and I was able to install the new software OK, which gave me the safety net to then reformat and overwrite my original PAW 8Gb drive. It took a while for the initial boot up but I could see the green and red lights flashing so I kept on waiting. All booted and configured OK.
Looking forward to some good weather to try it out. There was no other GA around when I went flying on Friday, just jets into Luton.
It certainly boots up much faster than the previous software version. Thanks Lee.
So moral of the story is not to buy ultra cheap micro SD cards off eBay.
Geoffrey