OS Builder/Run on XO hardware
It is usually possible, if a bit slow, to run OS builder on XO hardware. On platforms where fast machines are available (such as x86), using a server-class "builder" machine is recommended.
When resources are limited, or if server-class machines are not available for the platform (such as ARM), this recipe is recommended.
The procedure has been tested with XO-1.75 B1 prototype hardware and builds of the 11.3.x series (based on F14).
- XO-1.75 B1 or newer
- Good, fast SD card for swap
- External USB HDD -- fast, large capacity, to store cached RPMs and build files
- Install a recent OS (11.3.1 development build OS17 was used)
- Boot to Sugar or Gnome, log in, connect to network
- Disable automatic power mgmt from the Sugar control panel
- Insert external SD card to be used for swap
- Prepare the SD for swap -- in a terminal, as root
# see what block device id is the external SD mount # unmount any existing partition umount /media/mysdcard # use fdisk to delete manufacturer's partition # create a new partition, of at least 2GB, type 82 fdisk /dev/mmcblkN # prepare the new partition to be swap # it will report a UUID identifier partprobe mkswap /dev/mmcblkNp1 # add this line to fstab to use swap automatically on every boot UUID=<UUID reported by mkswap> swap swap defaults 0 0 # enable all swap partitions in fstab swapon -a -v
- Prepare the HDD partitioning it with fdisk with a large partition of type "83", then use mkfs to create an ext3 or ext4 partition.
- Ensure the system date is correct, if not -- use date -s "current date" to set
- Follow the OS Builder development installation instructions -- remember to disable firstboot, and note that you will want to have your OS Builder directory on the external USB disk
- On F14, you will need to bind-mount /var/tmp to be on your external USB HDD; some large tmp files:
mkdir /media/externaldisk/vartmp cp -pr /var/tmp/* /media/externaldisk/vartmp/ mount -o bind /media/externaldisk/vartmp /var/tmp
- For 11.3.x, we want to work on branch v4.0, so
git checkout -b v4.0 origin/v4.0
- During test builds, generating only one image is faster -- edit examples/olpc-os-11.3.1-xo1.75.ini to disable 8GB image generation and comment out the "usb_update" module.
Your setup is ready, you can now do:
sudo ./osbuilder.py examples/olpc-os-11.3.1-xo1.75.ini