Theres a little known feature thats in WDLXTV G2/Live/Plus that I think more people should be enjoying.
There is a built in ability to pivot and boot a firmware directly off a flash device or fast hard drive. This is not root.bin I'm talking about, this is all the files directly on your device. The device you use must be formatted in either ext2 or ext3, I suggest ext3 since the journal will come into use occasionally.
You can build your .rootFS either from an existing Ext3Boot root.bin or checkout the latest version from SVN.
Format USB with ext2/3
First thing to do is to format your designated drive with ext2/3 filesystem. You can do this on any linux system or on the WDTV itself.
In the process you will lose all data on the drive!!
Here's how to do this on WDTV:
- Make sure the drive you want to use is the only drive connected!
- Find the device and unmount it
# mount | grep /tmp/media/usb/USB /dev/sda1 on /tmp/media/usb/USB2/bd292dba-874d-4f7f-8dea-fe0393c0b435 type vfat (rw,noatime,nodiratime,fmask=0022,dmask=0022,codepage=cp437,iocharset=iso8859-1,utf8) # umount /tmp/media/usb/USB2/bd292dba-874d-4f7f-8dea-fe0393c0b435
- Delete any existing partitions on the drive and create a new linux partition (type 83) using fdisk.
Use p to print the current partition table, use d to delete existing partitions then use n to create a new partition (answer: primary, 1, defaults) and finaly write the changes with w.
# fdisk /dev/sda Command (m for help): p Disk /dev/sda: 1001 MB, 1001848320 bytes 255 heads, 63 sectors/track, 121 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sda1 1 122 978336 b Win95 FAT32 Partition 1 has different physical/logical endings: phys=(120, 254, 63) logical=(121, 204, 18) Command (m for help): d Selected partition 1 Command (m for help): n Command action e extended p primary partition (1-4) p Partition number (1-4): 1 First cylinder (1-121, default 1): 1 Last cylinder or +size or +sizeM or +sizeK (1-121, default 121): Using default value 121 Command (m for help): w The partition table has been altered. # fdisk -l /dev/sda Disk /dev/sda: 1001 MB, 1001848320 bytes 255 heads, 63 sectors/track, 121 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sda1 1 121 971901 83 Linux
- Create a filesystem in the partition
# mkfs.ext3 /dev/sda1 mke2fs 1.41.9 (22-Aug-2009) Filesystem label= OS type: Linux Block size=4096 (log=2) Fragment size=4096 (log=2) 60800 inodes, 242972 blocks 12148 blocks (5.00%) reserved for the super user First data block=0 Maximum filesystem blocks=251658240 8 block groups 32768 blocks per group, 32768 fragments per group 7600 inodes per group Superblock backups stored on blocks: 32768, 98304, 163840, 229376 Writing inode tables: done Creating journal (4096 blocks): done Writing superblocks and filesystem accounting information: done This filesystem will be automatically checked every 23 mounts or 180 days, whichever comes first. Use tune2fs -c or -i to override.
Copy root filesystem...
Grab the latest Ext3Boot root.bin, save it to the device you want to play with, and open your closest shell. Example below is done on the wdtv-live itself.
Replace USBx/xxx-xxx-xxx with USB1 or USB2 and your drives UUID!
cd /tmp/media/usb/USBx/xxx-xxx-xxx mkdir ext3-boot mount -o loop root.bin ext3-boot mkdir .rootFS rsync -avHS ext3-boot/ .rootFS umount ext3-boot rm root.bin sync && sync && sync && reboot
Now when this boots you should be greeted with ext3-boot, without root.bin.
With subversion you can run bleeding edge if you have an ext3 device:
cd /tmp/media/usb/USBx/xxx-xxx-xxx mkdir .rootFS svn co --username guest --password guest https://svn.wdlxtv.com/svn/wdlxtv-live/trunk .rootFS chmod 4755 .rootFS/usr/bin/sudo chmod 440 .rootFS/etc/sudoers chmod 440 .rootFS/etc/sudoers.d/README chmod 700 .rootFS/root/.ssh sync && sync && sync && sync
Change the SVN URL to check out different versions:
- 1.02.21-WDLXTV-Live: https://svn.wdlxtv.com/svn/wdlxtv-live/trunk
- 1.05.04-WDLXTV-Live: https://svn.wdlxtv.com/svn/1.05.04-wdlxtv/live/trunk
- 1.05.04-WDLXTV-Plus: https://svn.wdlxtv.com/svn/1.05.04-wdlxtv/plus/trunk
- 1.06.43-WDLXTV-Live: https://svn.wdlxtv.com/svn/1.06.43-wdlxtv/live/trunk
- 1.06.42-WDLXTV-Plus: https://svn.wdlxtv.com/svn/1.06.43-wdlxtv/plus/trunk
- Your device MUST come alive fast to work
- Any device that is already known to work with Ext3Boot root.bin will work with .rootFS
- Only one external 3.5 hdd I've tried out of ~10 will boot .rootFS / root.bin, the rest will not because they are too slow
- All 5 of my various 2.5" 'portable' external hdd's successfully boot root.bin / .rootFS
If you have more than one drive connected you can force the boot drive by setting ROOT_UUID to the UUID of your drive. This can be done in WEC (Main Tab, Advanced: Booting) or in telnet/shell:
blkid | grep sda1 /dev/sda1: UUID="bd292dba-874d-4f7f-8dea-fe0393c0b435" SEC_TYPE="ext2" TYPE="ext3" config_tool -c ROOT_UUID='bd292dba-874d-4f7f-8dea-fe0393c0b435' config_tool -s
You can use tags on .rootFS the same way as on root.bin. This way you can have different .rootFS version on the same drive.
- Tag your .rootFS
mv .rootFS .rootFS-102
- Set ROOT_TAG
config_tool -c ROOT_TAG=102 config_tool -s
--Recliq 13:15, 12 February 2012 (UTC)