Reply 33# sashijoseph |
Well, in retrospect, maybe I did misinterpret that quote in Post #27 from Page 18/Section 6.2.2.
I thought it meant "you put the boot files on the USB stick, power up the Pi with the Uboot button depressed then release it, and it will boot up reading from the stick rather than looking first for the SD card". In other words, similar to a Windows machine where usually it boots up from a hard drive, but sometimes you want to boot up from a CD-ROM or a USB stick (eg installing a new OS or entering recovery mode or using a Live CD) so you press F11 or whatever during POST to choose the boot option. That for me would be a logical way to design a Pi, so that if the SD card slot fails (and let's face it, it's not the most robust or reliable of things), there are other possibilities of booting. Personally, I would do away with SD cards altogether, add two more USB ports (like the R-Pi B-plus) and only use USB sticks for booting. (Is there a technical reason why that's not possible? What's the raison d'etre for SD cards anyway? They cost per GB about the same as USB sticks don't they?)
What that quote actually means is you put the boot files on your USB stick, and then you have to tell the Pi where to find them and issue a command for that from a Linux PC - in other words, the loading of those boot files has to be INITIATED from another computer using the PL2303 from the PC's USB port into the J11 UART serial TTL port pins.
Or have I still got the wrong end of the stick? Perhaps you have to send those boot files from the PC into J11 and there is no USB stick connected to the OTG at all?
Anyway, when all's said and done, without a Linux computer a set of commands such as
Copy the Code
- # usb reset
- # fatload usb [:partition]
doesn't help me much as I don't know how (or if it's even possible) to do that in Windows.