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--- installation_usb [2014/05/29 22:52]
127.0.0.1 external edit
+++ installation_usb [2015/10/18 19:19] (current)
abdulmueid Added troubleshooting for external devices with long spin up times on boot.
@@ Line 1: / Line 1: @@
-**USB Installation**
+===== Cloning XBian =====
-//Actual XBian Beta 2//
+==== To another device ====
-For purpose of USB installation, XBian provides function in xbian-config (both XBMC and CLI version) to create a functional copy/clone of currently booted installation to another media.
+xbian-config (both XBMC and CLI version) provides functionality to create a functional clone of your running XBian installation. This new clone can be made to various media such as a different partition on same storage, another SD card, external USB media as HDD, or a file if you want to create a backup. After the xbian-config clone function finishes, only a small modification of the ''/boot/cmdline.txt'' is needed. Change ''root=/dev/mmcblk0p2'' to the USB device and partition you cloned to e.g. ''root=/dev/sda1''.
-Another media could be different partition on same storage, another SD card, external USB media as HDD. After xbian-config function finishes, only modification of /boot/cmdline.txt is needed by changing "root=/dev/mmcblk0p2" to the specific USB device and partition "root=/dev/sda1". In rare cases with more USB disks attached can happen that other disk get's name of /dev/sda1 and XBian fail to boot. So if you are using more devices, use LABEL or UUID pointers to rootfs. Short step-by-step: http://forum.xbian.org/thread-427-post-19259.html#pid19259
+To create the clone. Start xbian-config:
+<code>
+root@pi:~# xbian-config
+</code>
-It is also possible to utilize this function for creating absolute backup copies. XBian cloner can directly create .IMG file. Format is exactly as needed for starting RPI up. It includes /boot partition and your system. Restore is as easy as installing XBian for the first time. Instead of clean public distribution image you flash to SD card your own .IMG file.
+Then go to option 6 and change the destination address to the device you want to clone to.
-XBian cloner will change all parameters in /boot/config.txt and cmdline.txt (or even /etc/fstab) for you during .IMG file creation process. IMG can be created on local media, usb disk, network server - any destination accessible by you RPI.
+In rare cases, with more USB disks attached, it can happen that other disk get the name ''/dev/sda1'' so XBian fails to boot. If you are using more devices, use the ''LABEL'' or ''UUID'' pointers to root device:
-In rare cases with more USB devices attached during boot.
+. Remove all devices except your new root device.
+. Run:
+<code>
+root@pi:~# sudo -i
+root@pi:~# blkid -s UUID -o value /dev/sda1
+d84e4-dd44-42df-b31e-fe4f492b5cce
+</code>
+or
+<code>
+root@pi:~# sudo -i
+root@pi:~# blkid -s LABEL -o value /dev/sda1
+xbian-copy
+</code>
+. These values can be used in the ''cmdline.txt'':
+<code>
+root=UUID=240d84e4-dd44-42df-b31e-fe4f492b5cce
+</code>
+or
+<code>
+root=LABEL=xbian-copy
+</code>
-//Older Versions//
+==== As a backup ====
-If you want to move to usb/backup version Beta1X, follow this older guide. This process will remove XBian sub volumes from /rootfs thus edit of /etc/fstab is needed.
+It is also possible to utilize this function for creating absolute backup copies. xbian-config can directly create ''.img'' file you can later use to write back on your SD card. So restoring is as easy as installing XBian for the first time. Instead of clean public distribution image you flash to SD card your own image file.
-This guide assumes your USB disk is on /dev/sda1, all data on this disk will be removed!
+xbian-config will change all parameters in ''/boot/config.txt'' and ''/boot/cmdline.txt'' (or even ''/etc/fstab'') for you during the backup creation process. The image can be created on a usb disk or network server, or any other destination accessible by XBian.
+==== Older Versions ====
+If you want to move to usb/backup version Beta1X, follow this older guide. This process will remove XBian sub volumes from ''/rootfs'' thus manually editing ''/etc/fstab'' is required.
+This guide assumes your USB disk is on ''/dev/sda1''. **Beware, all data on this disk will be removed!**
 <code>
@@ Line 27: / Line 56: @@
 </code>
-  * comment out the line with "/home" (with a "#" at the start of the line)
+Notes:
-  * change "LABEL=xbian-root-btrfs" to "root=/dev/sda1", remove "subvol=root/@," option from "/".
+  * comment out the line with ''/home'' (with a ''#'' at the start of the line)
-  * sudo nano /boot/cmdline.txt
+  * change ''LABEL=xbian-root-btrfs'' to ''root=/dev/sda1'' and remove the ''subvol=root/@,'' from the ''/'' entry.
-  * change "LABEL=xbian-root-btrfs" to "root=/dev/sda1"
+  * Then edit the ''/boot/cmdline.txt'' and\\ change ''LABEL=xbian-root-btrfs'' to ''root=/dev/sda1''\\ remove ''subvol=root/@''\\ change ''mod_scsi.scan=async'' to ''mod_scsi.scan=sync''\\ and when needed,\\ increase the number after ''rootwait=''
-  * remove "subvol=root/@"
-  * change "mod_scsi.scan=async" to "mod_scsi.scan=sync"
-  * according the need, change number after rootwait=
+==== Procedure for Cubox-i ====
+. Unmount external drive and make filesystem:
+<code>
+sudo umount /dev/sda1
+sudo mkfs.btrfs -L xbian-usb /dev/sda1
+</code>
+. Mount it and copy files from sd-card
+<code>
+sudo mount /dev/sda1 /mnt
+sudo rsync -aAX /* /mnt/ --exclude={/dev/*,/proc/*,/sys/*,/tmp/*,/run/*,/mnt/*,/media/*,/lost+found,/home/*/.gvfs} --progress
+</code>
+. Edit boot.scr.txt
+<code>
+sudo nano /boot/boot.scr.txt
+</code>
+change ''root=/dev/mmcblk0p2'' to ''root=/dev/sda1'' (or what your partition on the external drive is)
+remove ''subvol=root/@,''
+and compile boot.scr with (make backups of both files beforehand - just in case):
+<code>
+cd /boot; sudo ./mks
+</code>
+Reboot
+That's all!
+**To use sub volumes again:** (Important for filesystem snapshots)
+<code>
+sudo -i
+cd /
+btrfs sub create ROOT
+btrfs sub snap / ROOT/@
+</code>
+and then re add the previous deleted text at the same position:
+<code>
+sudo nano /boot/boot.scr.txt
+</code>
+''subvol=ROOT/@,''
+and compile it again with:
+<code>
+cd /boot; sudo ./mks
+</code>
+(It's important that ROOT is written the same way as created, in this case in capital letters!)
+For more informations see: https://github.com/xbianonpi/xbian/issues/556
+==== Troubleshooting ====
+Some external USB drives such as Seagate Expansion take longer than 10 seconds to spin up on boot, resulting in xbian not identifying the xbian-copy partition in time and results in recovery mode on start up.
+It is necessary to add appropriate delay in the initramfs script between device initialization and root mounting to resolve this issue.
+<code>
+xbian@xbian ~ $ sudo nano /etc/xbian-initramfs/init
+</code>
+Add ''sleep 10'' on a new line between ''up "after modprobe"'' and ''INITIALBOOT="0"''
+<code>
+...
+up "after modprobe"
+sleep 10
+INITIALBOOT="0"
+...
+</code>
+Adjust the delay from 10 to the appropriate amount needed for your external drive.
+Now, update the initramfs image:
+<code>
+xbian@xbian ~ $ sudo xbian-update-initramfs
+</code>
+The system should now boot from external USB drive properly. The only downside is a few additional seconds wait time during boot up.

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