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I am developing scripts for my embedded board ( a zynq board) and I need some scripts to be loaded prior to login. Since the filesystem is loaded into DDR memory, any modifications will be erased after a reboot. So for my development, I have to remove the SD card, then mount the filesystem on my development machine and after that, I have to unmount the FS and wrap u-boot headers on top of it. Finally write everything to SD card and see if everything is working or not. I was wondering if there is any better solution??? like reloading file system while linux is running???

maskarih
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    There are many solutions, but no one knows your hardware. One is just to include a standard rootfs attached to the Linux image. This rootfs will use tftp or some other transfer method to send the file over network/serial to the target. You can 'pivot' to this new ramfs. If you only have an SD card, then how can anything else work? – artless noise Dec 21 '16 at 18:25
  • I am using ZYBO for my project. http://store.digilentinc.com/zybo-zynq-7000-arm-fpga-soc-trainer-board/ What do you mean when you say: " If you only have an SD card, then how can anything else work?" – maskarih Dec 21 '16 at 18:34
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    You have both USB and Ethernet. Either one is good to transfer the rootfs to the target. You just need to make a 'stub rootfs' with scripts to transfer a target rootfs from your host over either Ethernet or USB. If you had **ONLY** an SD card and NO USB or Ethernet, then you might need a different solution. – artless noise Dec 22 '16 at 14:18

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