I'm trying to create a .img file that I can later burn to a SD card to program my systems.
AM3352
SDK and tools from ti-processor-sdk-linux-am3335x-evm-01.00.00.00
I can use create-sdcard.sh script to program a SD card. That works properly.
But my total filesystem size is < 500MB and I don't want the 16GB (or however big my SD card is) image that I get when I just "dd" from the SD card to an image file.
I've tried creating a file on disk, partitioning it, formatting the partitions, and copying the files there which seems to work, but when I unmount the file and remount it I get mount errors. Similar behavior happens if I write it to an SD card and then try to mount the SD card.
Steps to duplicate (run as super-user):
#!/bin/bash qemu-img create sdcard.img 500M sfdisk -D -H 255 -S 63 -C 63 sdcard.img << EOF ,9,0x0C,* 10,,,- EOF kpartx -av sdcard.img mkfs.vfat -F 32 -n "BOOT" /dev/mapper/loop0p1 mkfs.ext3 -L "rootfs" /dev/mapper/loop0p2 mkdir boot rootfs mount /dev/mapper/loop0p1 boot/ mount /dev/mapper/loop0p2 rootfs/ cp -rd $HOME/work/boot/MLO boot/ cp -rd $HOME/work/boot/u-boot.img boot/ cp -rd $HOME/work/rootfs/* rootfs/ sync sync umount boot/ rootfs/ rmdir boot/ rootfs/ kpartx -dv sdcard.img ddrescue -f sdcard.img /dev/sdb
Peter
