9 Replies Latest reply on Nov 7, 2016 9:13 AM by Intel Corporation

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

    Bill.

      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?

        • 1. Re: What is correct size of Linux /media/storage i.e. Edison disk that appears on Windows
          Intel Corporation
          This message was posted on behalf of Intel Corporation


          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.
           

          • 2. Re: What is correct size of Linux /media/storage i.e. Edison disk that appears on Windows
            Bill.

            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

            • 3. Re: What is correct size of Linux /media/storage i.e. Edison disk that appears on Windows
              Intel Corporation
              This message was posted on behalf of Intel Corporation

              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.

              • 4. Re: What is correct size of Linux /media/storage i.e. Edison disk that appears on Windows
                Bill.

                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

                • 5. Re: What is correct size of Linux /media/storage i.e. Edison disk that appears on Windows
                  Intel Corporation
                  This message was posted on behalf of Intel Corporation

                  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.

                  • 6. Re: What is correct size of Linux /media/storage i.e. Edison disk that appears on Windows
                    Bill.

                    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

                    • 7. Re: What is correct size of Linux /media/storage i.e. Edison disk that appears on Windows
                      Intel Corporation
                      This message was posted on behalf of Intel Corporation

                      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 (Can I increase the size of the Root '/' partition? ). I hope you find this information useful.

                       

                      Have a nice day.

                       

                      Best Regards,
                      -Jose.

                      • 8. Re: What is correct size of Linux /media/storage i.e. Edison disk that appears on Windows
                        Bill.

                        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

                        • 9. Re: What is correct size of Linux /media/storage i.e. Edison disk that appears on Windows
                          Intel Corporation
                          This message was posted on behalf of Intel Corporation

                          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.