Started by jGrey, August 20, 2014, 06:57:36 PM
Quote from: jGrey on August 26, 2014, 07:30:17 PMThe first question is that how the u-boot works, and where does it located. I guess it resides in the firstpartition and it will be executed firstly in the booting process? So we have to load this part firstly,then add the linux kernel. It sounds like that we'll be working on a blank SD card. Am I right? Can we workon the current SD card?
QuoteThe current micro SD card has the linux image and it boots up when the power in turned on. Then, part of the linux image will be moved to the RAM and the system runs from there, even the SD card is removed, the systemwill still be functional. I don't know if it's functioning 100%, or just very limited? My question is, atthis moment, what we can do if a second SD card is inserted.
QuoteTo read/write/edit the second SD card? How?What is the difference between the SD card with or without the u-boot part? My understanding on your firstreply dated as 8/20 is that, if we have a micro SD card with the u-boot AND linux kernel, booting up, thenwe might be able to write to the second, third, ... micro SD cards. Please advice.