Freescale imx beta/release sd burning questions

Freescale imx beta/release sd burning questions

[tom campbell]

List:

I've built the Freescale imx6 beta successfully from:
      fsl-yocto-3.10.17-1.0.0-beta.tar.gz
      L3.10.17_1.0.0_beta_131223_images_MX6.tar.gz
cd fsl-community-bsp-platform &&\
     MACHINE=imx6slevk source setup-environment build-evk &&\
     bitbake core-image-minimal


I have a question about sd card partitioning.  The instructions in 
Freescale Yocto user guide 4.1 say:
     sudo dd if=<image name>.sdcard of=/dev/sd<partition>
     sudo dd if=<image name>.sdcard of=/dev/sd<partition bs=1M && sync

No where can I find the partitioning requirements for the sd card.
How is the SD card to be partitioned?
Don't really understand the two commands above.  Unless <partition> is 
different, only difference is block size of writes
Can someone point me to the partitioning requirements?

thx
tom campbell

Re: Freescale imx beta/release sd burning questions

[Gary Thomas]

On 2014-05-22 09:33, tom campbell wrote:
> List:
>
> I've built the Freescale imx6 beta successfully from:
>       fsl-yocto-3.10.17-1.0.0-beta.tar.gz
>       L3.10.17_1.0.0_beta_131223_images_MX6.tar.gz
> cd fsl-community-bsp-platform &&\
>      MACHINE=imx6slevk source setup-environment build-evk &&\
>      bitbake core-image-minimal
>
>
> I have a question about sd card partitioning.  The instructions in Freescale Yocto user guide 4.1 say:
>      sudo dd if=<image name>.sdcard of=/dev/sd<partition>
>      sudo dd if=<image name>.sdcard of=/dev/sd<partition bs=1M && sync
>
> No where can I find the partitioning requirements for the sd card.
> How is the SD card to be partitioned?
> Don't really understand the two commands above.  Unless <partition> is different, only difference is block size of writes
> Can someone point me to the partitioning requirements?

You don't need to partition the SD card - the image is complete,
with it's own partitioning built in.  Those directions are a bit
misleading as it should read of=/dev/sdX, where sdX is the name
of your SD device; you should never use a partition device here,
rather the entire device.

-- 
------------------------------------------------------------
Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
------------------------------------------------------------

Re: Freescale imx beta/release sd burning questions

[David Sowa]

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Tom,

The .sdcard file produced by the bitbake process has the partition
information baked in already so you want to write it to the raw sd card
device.

On my particular system I write the files to /dev/sdX not to /dev/sdX1.
 The exact letter your sd card shows up as will depend on what other
devices are present in your system.

On my Ubuntu dev system when I insert the sd card the system automounts the
existing partitions so I always need to umount the partitions before I can
write to the raw device.  So the whole process looks like

insert sd card
sudo umount /dev/sdX1
sudo umount /dev/sdX2
sudo dd if=core-image-minimal-boardname.sdcard of=/dev/sdX bs=4M






On Thu, May 22, 2014 at 11:33 AM, tom campbell
<content@dinkumsoftware.com>wrote:

> List:
>
> I've built the Freescale imx6 beta successfully from:
>      fsl-yocto-3.10.17-1.0.0-beta.tar.gz
>      L3.10.17_1.0.0_beta_131223_images_MX6.tar.gz
> cd fsl-community-bsp-platform &&\
>     MACHINE=imx6slevk source setup-environment build-evk &&\
>     bitbake core-image-minimal
>
>
> I have a question about sd card partitioning.  The instructions in
> Freescale Yocto user guide 4.1 say:
>     sudo dd if=<image name>.sdcard of=/dev/sd<partition>
>     sudo dd if=<image name>.sdcard of=/dev/sd<partition bs=1M && sync
>
> No where can I find the partitioning requirements for the sd card.
> How is the SD card to be partitioned?
> Don't really understand the two commands above.  Unless <partition> is
> different, only difference is block size of writes
> Can someone point me to the partitioning requirements?
>
> thx
> tom campbell
>
> --
> _______________________________________________
> meta-freescale mailing list
> meta-freescale@yoctoproject.org
> https://lists.yoctoproject.org/listinfo/meta-freescale
>

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Re: Freescale imx beta/release sd burning questions

[tom campbell]

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Thanks all.
That cleared up my confusion and works.
tom campbell

On 05/22/2014 11:51 AM, David Sowa wrote:
> Tom,
>
> The .sdcard file produced by the bitbake process has the partition 
> information baked in already so you want to write it to the raw sd 
> card device.
>
> On my particular system I write the files to /dev/sdX not to 
> /dev/sdX1.  The exact letter your sd card shows up as will depend on 
> what other devices are present in your system.
>
> On my Ubuntu dev system when I insert the sd card the system 
> automounts the existing partitions so I always need to umount the 
> partitions before I can write to the raw device.  So the whole process 
> looks like
>
> insert sd card
> sudo umount /dev/sdX1
> sudo umount /dev/sdX2
> sudo dd if=core-image-minimal-boardname.sdcard of=/dev/sdX bs=4M
>
>
>
>
>
>
> On Thu, May 22, 2014 at 11:33 AM, tom campbell 
> <content@dinkumsoftware.com <mailto:content@dinkumsoftware.com>> wrote:
>
>     List:
>
>     I've built the Freescale imx6 beta successfully from:
>          fsl-yocto-3.10.17-1.0.0-beta.tar.gz
>          L3.10.17_1.0.0_beta_131223_images_MX6.tar.gz
>     cd fsl-community-bsp-platform &&\
>         MACHINE=imx6slevk source setup-environment build-evk &&\
>         bitbake core-image-minimal
>
>
>     I have a question about sd card partitioning.  The instructions in
>     Freescale Yocto user guide 4.1 say:
>         sudo dd if=<image name>.sdcard of=/dev/sd<partition>
>         sudo dd if=<image name>.sdcard of=/dev/sd<partition bs=1M && sync
>
>     No where can I find the partitioning requirements for the sd card.
>     How is the SD card to be partitioned?
>     Don't really understand the two commands above.  Unless
>     <partition> is different, only difference is block size of writes
>     Can someone point me to the partitioning requirements?
>
>     thx
>     tom campbell
>
>     -- 
>     _______________________________________________
>     meta-freescale mailing list
>     meta-freescale@yoctoproject.org
>     <mailto:meta-freescale@yoctoproject.org>
>     https://lists.yoctoproject.org/listinfo/meta-freescale
>
>


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Re: Freescale imx beta/release sd burning questions

[Matthew Reynolds]

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Tom,

I have  been using the yocto 3.10.17 dora release.  When I write the
image I don't do it to a partition, but to the device.

For example,
sudo dd dse-image-x11-imx6qdsedvr.sdcard of=/dev/sdd bs=1M

The image is going to contain the u-boot, a partition for the kernel and
a partition for the file system. They will be created on the device by
writing the image this way.

Regards,
Matthew


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List:

I've built the Freescale imx6 beta successfully from:
      fsl-yocto-3.10.17-1.0.0-beta.tar.gz
      L3.10.17_1.0.0_beta_131223_images_MX6.tar.gz
cd fsl-community-bsp-platform &&\
     MACHINE=imx6slevk source setup-environment build-evk &&\
     bitbake core-image-minimal


I have a question about sd card partitioning.  The instructions in
Freescale Yocto user guide 4.1 say:
     sudo dd if=<image name>.sdcard of=/dev/sd<partition>
     sudo dd if=<image name>.sdcard of=/dev/sd<partition bs=1M && sync

No where can I find the partitioning requirements for the sd card.
How is the SD card to be partitioned?
Don't really understand the two commands above.  Unless <partition> is
different, only difference is block size of writes
Can someone point me to the partitioning requirements?

thx
tom campbell

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meta-freescale@yoctoproject.org
https://lists.yoctoproject.org/listinfo/meta-freescale



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