The image I created with OS builder, and loaded onto an SD card, stalls with initramfs complaining that dracut does not have a rootfs declared in cmdline.
Strangely, at the OK prompt, I can declare " root=/dev/mmcblk0p2 to boot-file" and then "boot", and I can get into the new image. There's a lot that I don't know about forth, So I tried to simplify the situation with my own substitute olpc.fth: <olpc.fth> \ short and to the point unfreeze " sd:\boot\runrd0.zip" to ramdisk boot sd:\boot\runos0.zip root=/dev/mmcblk0p2 console=ttyS0,115200 </olpc.fth> Which led to the following "Unrecognized program format" on the end of the serial cable: Forth Type 'i' to interrupt stand-init sequence USB2 devices: /pci/usb@f,5/wlan@0,0 USB1 devices: OLPC C2, 256 MiB memory installed, S/N SHF807040A4 OpenFirmware Q2F20 EC Firmware Ver:1.2.1 2015-09-02 22:41:40 UTC Type the Esc key to interrupt automatic startup Boot device: /sd/disk:\boot\olpc.fth Arguments: Boot device: /pci/sd@c,1/disk@1:\boot\runos0.zip Arguments: root=/dev/mmcblk0p2 console=ttyS0,110 <buffer@ffb6f748>:4: Unrecognized program format OLPC C2, 256 MiB memory installed, S/N SHF807040A4 OpenFirmware Q2F20 EC Firmware Ver:1.2.1 2015-09-02 22:41:44 UTC Type 'help' for more information. Should I add "true to security-off?" to my olpc.fth? There are just so many trial-and-error exploits I have the patience for! Maybe someone knows how I can correct the missing cmdline "root=". It's pretty clear that other SD builds I have done have not experienced this problem. Thanks for the help
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