Difference between revisions of "Testing/Reports/Sugar on a Stick Persistence"

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(Created page with "{{Message|This method is taken from http://fedoraproject.org/wiki/How_to_create_and_use_Live_USB#Creating_a_USB_stick_from_a_running_live_environment, and is different from th...")
 
(Link to tutorial presentation of this method, http://soas-loader.readthedocs.org/)
 
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{{Message|This method is taken from http://fedoraproject.org/wiki/How_to_create_and_use_Live_USB#Creating_a_USB_stick_from_a_running_live_environment, and is different from the contents of other Sugar on a Stick pages. I have successfully made 3 sticks, which have performed Software update correctly and, so far, lasted a few days. The method seems particularly flexible, requiring minimal documentation. --[[User:Inkyfingers|Inkyfingers]] ([[User talk:Inkyfingers|talk]]) 17:58, 8 April 2014 (EDT)}}
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{{Message|Presenting this method to a wider audience is still a work in progress. The working title is [[Activities/SoaS_Loader |SoaS Loader]]. You will find a tutorial presentation of this method here http://soas-loader.readthedocs.org/.
  
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The starting point is a PC, and a clean 2GB or 4GB USB stick to use as the target device.
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Limitations may be discussed on the [[Talk:Testing/Reports/Sugar on a Stick Persistence | talk]] page.}}
  
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It does not really matter what operating system you are using. To make your persistent Sugar on a Stick you will [[Sugar on a Stick/Boot|boot your computer]] with a Sugar LiveOS "host" media, which might be:
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The starting point is
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* a PC, laptop, or netbook
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* a clean 2GB or 4GB USB stick to use as the target device.
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* a Sugar [[LiveOS image]] to use as the "host" media.
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It does not really matter what operating system you are using. To make your persistent Sugar on a Stick you will [[Sugar on a Stick/Boot|boot]] your computer with a Sugar LiveOS "host" media, which might be:  
  
 
* A CD-ROM made from the Sugar.iso available from [[Sugar on a Stick/Downloads]]
 
* A CD-ROM made from the Sugar.iso available from [[Sugar on a Stick/Downloads]]
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Boot your computer with the chosen LiveOS media. Once Sugar is running,
 
Boot your computer with the chosen LiveOS media. Once Sugar is running,
  
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''''Either''' enter a console with Ctrl+Alt+F2,
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'''Either''' enter a console with Ctrl+Alt+F2,
  
 
'''or''' open the Terminal Activity, [[File:Activity-terminal.png|bottom|link=http://en.flossmanuals.net/terminal]], from the <span class=plainlinks>[http://wiki.sugarlabs.org/images/9/9b/Home_ListView_button.png Home list View]</span>.
 
'''or''' open the Terminal Activity, [[File:Activity-terminal.png|bottom|link=http://en.flossmanuals.net/terminal]], from the <span class=plainlinks>[http://wiki.sugarlabs.org/images/9/9b/Home_ListView_button.png Home list View]</span>.
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{{Show|extra detail.
 
{{Show|extra detail.
 
|<pre>
 
|<pre>
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On the first pass, before plugging in the target stick, expect output like this:
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First, running the command `df -Th` before plugging in the target stick, expect output like this:
  
 
[root@localhost ~]# df -Th
 
[root@localhost ~]# df -Th
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vartmp              tmpfs    2.0G    0  2.0G  0% /var/tmp
 
vartmp              tmpfs    2.0G    0  2.0G  0% /var/tmp
  
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After the target stick is inserted, the command produces an extra line at the bottom:
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Then, running the command `df -Th` after the target stick is inserted, the command produces an extra line at the bottom:
  
 
[root@localhost ~]# df -Th
 
[root@localhost ~]# df -Th

Latest revision as of 02:28, 6 August 2015

Favorite-star.png
Presenting this method to a wider audience is still a work in progress. The working title is SoaS Loader. You will find a tutorial presentation of this method here http://soas-loader.readthedocs.org/. Limitations may be discussed on the talk page.

The starting point is

  • a PC, laptop, or netbook
  • a clean 2GB or 4GB USB stick to use as the target device.
  • a Sugar LiveOS image to use as the "host" media.

It does not really matter what operating system you are using. To make your persistent Sugar on a Stick you will boot your computer with a Sugar LiveOS "host" media, which might be:

The CD-ROM could be made from the default CD writing software of your PC.
    sudo dd if=Fedora-Live-SoaSversion.iso of=/dev/sdX bs=8M
  • A USB stick written with Nautilus (Files).
  • or any other Sugar on a Stick.

Method

Boot your computer with the chosen LiveOS media. Once Sugar is running,

Either enter a console with Ctrl+Alt+F2,

or open the Terminal Activity, Activity-terminal.png, from the Home list View.

Plug a clean 2GB memory stick, the target device, into the PC.

Run the command, 

df -Th

to establish the device location.

extra detail. 
First, running the command `df -Th` before plugging in the target stick, expect output like this:

[root@localhost ~]# df -Th
Filesystem          Type      Size  Used Avail Use% Mounted on
/dev/mapper/live-rw ext4      2.9G  2.1G  773M  74% /
devtmpfs            devtmpfs  2.0G     0  2.0G   0% /dev
tmpfs               tmpfs     2.0G   72K  2.0G   1% /dev/shm
tmpfs               tmpfs     2.0G  632K  2.0G   1% /run
tmpfs               tmpfs     2.0G     0  2.0G   0% /sys/fs/cgroup
/dev/sr0            iso9660   670M  670M     0 100% /run/initramfs/live
tmpfs               tmpfs     2.0G   32K  2.0G   1% /tmp
varcacheyum         tmpfs     2.0G     0  2.0G   0% /var/cache/yum
vartmp              tmpfs     2.0G     0  2.0G   0% /var/tmp

Then, running the command `df -Th` after the target stick is inserted, the command produces an extra line at the bottom:

[root@localhost ~]# df -Th
Filesystem          Type      Size  Used Avail Use% Mounted on
/dev/mapper/live-rw ext4      2.9G  2.1G  773M  74% /
devtmpfs            devtmpfs  2.0G     0  2.0G   0% /dev
tmpfs               tmpfs     2.0G   72K  2.0G   1% /dev/shm
tmpfs               tmpfs     2.0G  632K  2.0G   1% /run
tmpfs               tmpfs     2.0G     0  2.0G   0% /sys/fs/cgroup
/dev/sr0            iso9660   670M  670M     0 100% /run/initramfs/live
tmpfs               tmpfs     2.0G   32K  2.0G   1% /tmp
varcacheyum         tmpfs     2.0G     0  2.0G   0% /var/cache/yum
vartmp              tmpfs     2.0G     0  2.0G   0% /var/tmp
/dev/sdb1           vfat      1.8G  2.0K  1.8G   1% /run/media/liveuser/SanDisk

The new line reads:
/dev/sdb1    vfat      1.8G  2.0K  1.8G   1% /run/media/liveuser/SanDisk
and the first element reports that the target device is represented as /dev/sdb1.
Write down your target in the format, /dev/sd?1, where ? is likely to be b, c, d or e.

Unmount the target USB stick - edit to reflect your target: 

umount /dev/sd?1

For a nominal 2GB stick, enter this command - edit to reflect your target: 

su -c "livecd-iso-to-disk --reset-mbr --overlay-size-mb 500 --home-size-mb 800 --unencrypted-home /run/initramfs/livedev /dev/sd?1"

Writing the stick will take some time, and when successful will finish by reporting

"Target device is now set up with a Live image!"

Your persistent Sugar on a Stick is ready to run.

Shut down your "host" Sugar LiveOS media system and boot the new.

For a nominal 4GB stick use this command, 

su -c "livecd-iso-to-disk --reset-mbr --overlay-size-mb 1000 --home-size-mb 1600 --unencrypted-home /run/initramfs/livedev /dev/sd?1"

Maintenance

The persistent overlay status may be queried by issuing this command on the live system: 

   dmsetup status live-rw

The returned value may look like this: 

live-rw: 0 8388608 snapshot 42296/204800 176

where the fraction after 'snapshot' for the logical volume is that of 512-byte sectors consumed in the overlay.

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