ms-iot/iot-adk-addonkit

How to confirm the partition layout after program the custom FFU on the DB410C?

Closed this issue · 2 comments

moyanming commented

Hi,
I want to add all the Speech data feature, those speech data may occupy more space of the EMMC, so,

iot-adk-addonkit/Source-arm/BSP/QCDB410C/Packages/QCDB410C.DeviceLayout-R/DeviceLayout.xml

Line 240 in c109042

<Name>MainOS</Name>

QQ截图20190309124208

  1. Do I need to increase the MinFreeSectors of the MainOS partition or other partition of the QCDB410C.DeviceLayout?
  2. Which data will be store in the MinFreeSectors of the MainOS partition?
  3. I want to delete the recovery partition (I need more user data space), is it right that just delete the following partition?

    iot-adk-addonkit/Source-arm/BSP/QCDB410C/Packages/QCDB410C.DeviceLayout-R/DeviceLayout.xml

    Line 253 in c109042

    <Name>MMOS</Name>
    MMOS FAT32 4096000 {ebd0a0a2-b9e5-4433-87c0-68b6b72699c7}

QQ截图20190309124041

  1. How to confirm the partition layout after program my custom FFU on the DB410C?
    Is there diskpart or other command can be used?

Best regards.

moyanming commented

Get-PSDrive
can list the following:
QQ截图20190329182627

parameshbabu commented
  1. You dont need to increase the MinFreeSectors as such as this is the free space for MainOS added after the actual size of the MainOS ( so when you add more features, the actual size of the MainOS increases).
  2. The current value is good enough and no need to change.
  3. Yes, you can remove that Partition definition if you dont need MMOS. Note that you should also remove the recovery related features from the OEM Input xml file (RECOVERY_BCD etc). Also with this change, you will not be able to recover the device in case of any failures during update.
  4. You can mount the FFU on the pc using ffum command and see the partition layout.
  • 👍1