IMX8MM sdcard文件解析

使用bzip2 -d -f 把*.sdcard.bz2解压成sdcard文件
在命令行中使用mount挂载 ，umount卸载

offset=16384*512=8388608

marvin@ubuntu:~/Desktop$ sudo mount -o loop,offset=8388608 fsl-image-validation-imx-imx8mmevk.sdcard /mnt
marvin@ubuntu:~/Desktop$ sudo umount /mnt

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marvin@ubuntu:~/Desktop$ sudo fdisk ./fsl-image-validation-imx-imx8mmevk.sdcard

Welcome to fdisk (util-linux 2.27.1).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.


Command (m for help): p
Disk ./fsl-image-validation-imx-imx8mmevk.sdcard: 3.9 GiB, 4177941504 bytes, 8160042 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0xe119d371

Device                                       Boot  Start     End Sectors  Size Id Type
./fsl-image-validation-imx-imx8mmevk.sdcard1 *     16384  186775  170392 83.2M  c W95 FAT32 (LBA)
./fsl-image-validation-imx-imx8mmevk.sdcard2      196608 8160041 7963434  3.8G 83 Linux

Command (m for help): q

marvin@ubuntu:~/Desktop$ sudo mount -o loop,offset=100663296 fsl-image-validation-imx-imx8mmevk.sdcard /mnt

marvin@ubuntu:~/Desktop$ sudo umount /mnt

offset=196608*512=100663296

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