Sugar on a Stick/Linux: Difference between revisions

 

 

Before experimenting beyond the instructions in the link above, please read [[fedora:How to create and use Live USB]] for more background details. That page starts with Direct Write methods of creating a (non-persistent) Live USB system, and further down the page describes using the livecd-iso-to-disk tool which is the prefered method of making persistent Sugar on a Stick.

 

The reader should be aware that Ubuntu/Debian use a method to create a live USB system which is fundamentally different to Fedora's method, used by Sugar.

 

:''Quote from the above Fedora page''

 

: '''Issues using other Linux distributions'''

 

 

 

Persistence in the context of a live USB system, is the ability to save both system changes, including Software updates, and the user's work between sessions, that is after shutdown and reboot.

 

 

Linux users might consider reading the following pages for supported methods to install SoaS.

 

:[[Sugar on a Stick/Linux/Installation]]

 

 

:Make your SoaS from within a Sugar Live OS environment, which is itself a Fedora system.

 

: '''Either''' Burn a Sugar.iso and follow the section of [[Sugar on a Stick/Installation]] entitled

 

 

: '''or''' create a Sugar image by dd or any of the methods on [[ Testing/Reports/Sugar_on_a_Stick_Persistence|this page]]. Then boot into the Live OS, to create SoaS from the running Live OS image.

==Experimental==

 

 

[[Sugar on a Stick/Beta|SoaS test builds]] | [[Sugar on a Stick/Installation/OLPC|OLPC XO-1]] | [[Sugar on a Stick/Linux/openSUSE|openSUSE]] | [[Trisquel On A Sugar Toast|Trisquel]] | [[VirtualBox]] | [[VMware]] | [[Sugar on a Stick/Linux/Non-compressed Fedora|non-compressed Fedora]] | [[:Category:Live USB|Live USB: (all known portable Sugar distributions)]]

 

This is known to work in Fedora and has been reported to work in Ubuntu.

: {{Code|sudo mkdir /run/soas/}}

: {{Code|sudo mount /path/to/Fedora-Live-SoaS-x86_64-20-1 /run/soas/}}

:: (mount: /dev/loop0 is write-protected, mounting read-only)

: {{Code|cd /run/soas/LiveOS}}

/dev/loop0 iso9660    668M 668M     0 100% /run/soas

* Run {{Code|livecd-iso-to-disk}} as the root user, making sure to pass the correct USB device node name and to set overlay and home size appropriately, depending on the target USB device storage capacity.

:<div style="padding: 1em; border: 1px dashed #2F6FAB; background-color: #FBFBFB; margin: 1em 0px 1em 0em; font-family: Courier;">./livecd-iso-to-disk --reset-mbr --overlay-size-mb '''500''' --home-size-mb '''800''' --unencrypted-home '''/path/to/downloaded'''.iso /dev/sd'''?'''1</div>

: If the command fails telling you that /dev/sd'''?'''1 does not exist, try using the command for /dev/sd'''?''' (the name of the device) and not for /dev/sd'''?'''1 (the name of the partition), like this:

 

:<div style="padding: 1em; border: 1px dashed #2F6FAB; background-color: #FBFBFB; margin: 1em 0px 1em 0em; font-family: Courier;">./livecd-iso-to-disk --reset-mbr --overlay-size-mb '''500''' --home-size-mb '''800''' --unencrypted-home '''/path/to/downloaded'''.iso /dev/sd'''?'''</div>

 

:* mount the USB device (e.g., by unplugging and re-inserting it),

:* issue the command with the '''{{Code|--format --msdos}}''' options, like this:

{{Note/warning|Warning|The command described here will ask for a confirmation and will '''destroy''' all pre-existing data on your USB device.<br>

See also [[olpc:How_to_Damage_a_FLASH_Storage_Device|How to Damage a FLASH Storage Device]] for a discussion of why using the factory format is preferred.}}

::<div style="padding: 1em; border: 1px dashed #2F6FAB; background-color: #FBFBFB; margin: 1em 0px 1em 0em; font-family: Courier;">./livecd-iso-to-disk --reset-mbr '''--format --msdos''' --overlay-size-mb '''500''' --home-size-mb '''800''' --unencrypted-home '''/path/to/downloaded'''.iso /dev/sd'''?'''</div>

: {{Highlight|In the above examples, the {{Code|'''/path/to/downloaded'''.iso}} may be substituted with {{Code|/dev/loop0}}, as this is the loop device that the mount command chose.}}

{{Note/note|Note| Additional USB or SD devices may be loaded from a running ''Sugar on a Stick'' image that was loaded with the livecd-iso-to-disk script (but not those installed by other methods) by running this command in the Terminal Activity as a root user:}}

:<div style="padding: 1em; border: 1px dashed #2F6FAB; background-color: #FBFBFB; margin: 1em 0px 1em 0em; font-family: Courier;">/run/initramfs/live/LiveOS/livecd-iso-to-disk --reset-mbr --overlay-size-mb '''500''' --home-size-mb '''800''' --unencrypted-home /run/initramfs/livedev /dev/sd'''?'''1</div>

: The ''livecd-iso-to-disk'' installation method has other advantages over the ''liveusb-creator'' method by allowing the creation of a separate,  persistent /home/liveuser folder with the <tt>--home-size-mb ''NNN''</tt> option. This feature avoids consumption of the persistent overlay for Activity storage (see [[LiveOS image]]) and allows one to update the OS image while keeping the user files (by running the script against your existing installation but <u>leaving out</u> the --home-size-mb NNN option).

::* A {{Code|--delete-home}} option is available to avoid an error message while requesting both a new home (with {{Code|--home-size-mb}}) when there is already a persistent home on the device). You wouldn't use the --delete-home option on an upgrade of the operating system only.

:Depending on the size of your USB stick, you may have to decrease {{Code|--overlay-size-mb}} and {{Code|--home-size-mb}} values (for example, for a 2 GB stick, use 500 for the overlay and 800 for the home folder).

:: If you have sufficient capacity on your target device, and format it with an ext[234] filesystem to overcome the 4096-MB fat32 file size limit, you may avoid the SquashFS compression by including the {{Code|--skipcompress}} option in the script command line.

[LiveOS]$ sudo ./livecd-iso-to-disk --reset-mbr --overlay-size-mb 500 --home-size-mb 800 --unencrypted-home /home/MyAccount/Downloads/Fedora-Live-SoaS-x86_64-20-1.iso /dev/sdc1

/home/MyAccount/Downloads/Fedora-Live-SoaS-x86_64-20-1.iso:   b0a9414ff7eb79b680d5c86440e19587

Fragment sums: 9bfe23577651c88dcfb78c76ac3a28a5c53eead4561e3bdc5921b8b2e748

    630,784,000 100%   1.96MB/s    0:05:06 (xfr#1, to-chk=0/1)

          8,192 100%    0.00kB/s    0:00:00 (xfr#1, to-chk=0/1)

524288000 bytes (524 MB) copied, 216.717 s, 2.4 MB/s

800+0 records in

800+0 records out

838860800 bytes (839 MB) copied, 344.643 s, 2.4 MB/s

mke2fs 1.42.8 (20-Jun-2013)

51296 inodes, 204800 blocks

10240 blocks (5.00%) reserved for the super user

Maximum filesystem blocks=209715200

7 block groups

7328 inodes per group

32768, 98304, 163840

tune2fs 1.42.8 (20-Jun-2013)