What is correct size of Linux /media/storage i.e. Edison disk that appears on Windows

[MClif]

Hi,

My environment:

Edison/Linux version: 201603141535

Windows 10

Windows sees a drive named Edison with a size of 766 MB

Edison/Linux sees /media/storage of 785 MB (close enough)

Looking here: http://download.intel.com/support/edison/sb/edison101presentationfromidfforthecommunity.pdf

it says: Flash Storage 4 GB eMMC

I am assuming that /media/storage and the Edison disk are the SAME as Flash Storage.

Question: With the my March 2016 version of Yocto, was a change made so that 4GB is no longer used for /media/storage, i.e. for the Edison disk space that shows up on Windows?

[idata]

Hi Bill,Thanks for your interest in the Intel Edison Platform.This is a good question. The drive named Edison which is 766 MB, was a storage dedicated to flash the image in previous versions. Now this space is not used, the Yocto image is flashed in the 4 GB eMMC. I hope you find this information useful.I will be waiting for your reply, have a nice day.Best Regards,-Jose.

[MClif]

Hi Hose.

Thanks for the quick response.

Question: Is that 4 GB of eMMC visible to me when I login to Edison/Yocto? i.e. can I do something with it from the Yocto side.

Regards,

Bill

[idata]

Hi Bill,

Yes you can do something with it, for example if you are using the console, you can create a file using this command: touch new.txt. You will create a text file and it will be store in the 4GB. May I ask what are trying to do with this storage space?I will be waiting for your reply, we hope you have a nice day!Best Regards,-Jose.

[MClif]

Jose,

Thanks for the QUICKER response.

Regarding : "May I ask what are trying to do with this storage space?"

I am just playing with Edison and trying to understand lots of things. I am working through all the various samples projects and asking questions like this one and others.

Assuming the following:

The Windows Edison space of 766M is part of the eMMC4 GB space

On Linux that same SPACE is /media/storage which is mounted on /dev/loop0

Question: what is the file system for the eMMC 4GB that I would cd to and then do the touch new.txt

Regards,

Bill

[idata]

Hi Bill,

It is not necessary to access any storage file. Once you have access the Linux console, any file that you create in any directory, will be save in the 4GB eMMC. Below I attach you an example creating a file.

I'll be waiting for your reply, have a nice day.

Best Regards,

-Jose.

[MClif]

Hi Jose,

This is very interesting!

Windows, Linux and Mac PCs have a hard disk, I'll call it disk0, which is where the OS is installed and where people install programs and place their data.

I see Edison as

another PC but with a different set of inputs and outputs compared to a Windows PC,

and it's disk0 is the 4GB of eMMC

The following two sets of text are from df command output, the second one is sorted.

root@edison:~# df

Filesystem 1K-blocks Used Available Use% Mounted on

/dev/root 1444528 980812 373236 73% /

devtmpfs 491264 0 491264 0% /dev

tmpfs 491548 0 491548 0% /dev/shm

tmpfs 491548 596 490952 1% /run

tmpfs 491548 0 491548 0% /sys/fs/cgroup

tmpfs 491548 4 491544 1% /tmp

/dev/mmcblk0p10 1337936 2100 1319452 1% /home

tmpfs 491548 6164 485384 2% /var/volatile

/dev/mmcblk0p5 1003 19 913 3% /factory

/dev/mmcblk1p1 15549952 96 15549856 1% /media/sdcard

tmpfs 98312 0 98312 0% /run/user/0

/dev/loop0 784872 80 784792 1% /media/storage

root@edison:~#

root@edison:~# df | sort

Filesystem 1K-blocks Used Available Use% Mounted on

/dev/loop0 784872 80 784792 1% /media/storage

/dev/mmcblk0p10 1337936 2100 1319452 1% /home

/dev/mmcblk0p5 1003 19 913 3% /factory

/dev/mmcblk1p1 15549952 96 15549856 1% /media/sdcard

/dev/root 1444528 980812 373236 73% /

devtmpfs 491264 0 491264 0% /dev

tmpfs 98312 0 98312 0% /run/user/0

tmpfs 491548 0 491548 0% /dev/shm

tmpfs 491548 0 491548 0% /sys/fs/cgroup

tmpfs 491548 4 491544 1% /tmp

tmpfs 491548 596 490952 1% /run

tmpfs 491548 6164 485384 2% /var/volatile

root@edison:~#

Question: do all the filesystems that begin with /dev reside on the eMMC disk0?

Question: are all of the NON /dev/filesystems created by Yocto in the 4GB of memory?

Regards,

Bill

[idata]

Hi Bill,

All the partitions you see using the command df, are done after you flash the image. The space that can be used is the one shown in /dev/root (1.4G). If you will like to increase the size of the root partition, I would recommend to follow this thread ( ). I hope you find this information useful.

Have a nice day.

Best Regards,

-Jose.

[MClif]

Jose,

Thanks for the pointer.I am not at the point where I need to increase the size of /dev/root.

This was educational. Thanks for helping.

I am done.

Regards,

Bill

[idata]

Hi Bill,

Always happy to help, if you have any more questions please don't hesitate to contact us.Have a nice day!Best Regards,-Jose.