... | ... | @@ -56,6 +56,7 @@ Note: Some buggy kernels may not populate `/proc/mtd` properly. In most such cas |
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### EMMC Based Devices
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Few EMMC (Embedded MultiMedia Card) based devices have `/proc/emmc` populated with the partition layout, by the linux kernel. In this case, no specific patch file is required by Online Nandroid. However, this practice is not followed in later devices. Thus, these require patch files. A partition layout file is very similar to `/proc/mtd` or `/proc/emmc` generated by linux kernel. It follows the same format and the same header.
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Gathering information to produce a partition layout file is trivial. It is sometimes revealed somewhere under the `/sys/devices` by linux kernel. But this is not always the case. ROM and kernel developers, would, most of the time, figure this out and share this information in development threads on forums like XDA. Other times, it is easiest to obtain a copy of recovery.fstab used by stock, CWM, TWRP and other recoveries. This file is present in the recovery ramdisk and thus can be obtained from someone who has physical access to the device. Alternatively, this file is available at device repositories on Github and other places. A simple search on Google for `android_device_oem_device`, where `oem` is the name of device manufacturer such as `samsung`, `sony`, `motorola`, `lge`..., and `device` is the code name / technical name of the device such as `mako` for `Google Nexus 4` and `m0` for `Samsung Galaxy S III`.
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In addition a PIT file or a scatter file for the specific device can also be used for deducing the partition layout.
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