https://oplern.hatenablog.com/entry/2017/06/30/231027
$ sudo mount -t ext4 -o loop MaaXBoard-LinuxShipmentImage-Yocto-V1.0.6r07.img /home/nvidia/work/temp/mnt/
mount: wrong fs type, bad option, bad superblock on /dev/loop0,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so.
- This happens when your img file is valid but there are multiple paritions in the img file.
- You need to specify the offset for each partition, and for this you need to check yousin 'fdisk'
$ fdisk -l -u MaaXBoard-LinuxShipmentImage-Yocto-V1.0.6r07.img
Disk MaaXBoard-LinuxShipmentImage-Yocto-V1.0.6r07.img: 2.6 GiB, 2788163584 bytes, 5445632 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: 0xb576fa97
Device Boot Start End Sectors Size Id Type
MaaXBoard-LinuxShipmentImage-Yocto-V1.0.6r07.img1 * 20480 544767 524288 256M c W95 FAT32 (LBA)
MaaXBoard-LinuxShipmentImage-Yocto-V1.0.6r07.img2 544768 5445631 4900864 2.3G 83 Linux
- 278921216 is 544768 (Start) * 512 (Sector size)
- Mount using -o option and specify the offset
$ sudo mount -t ext4 -o loop,offset=278921216 MaaXBoard-LinuxShipmentImage-Yocto-V1.0.6r07.img /home/nvidia/work/temp/mnt/
$ cd mnt/
$ ls
bin boot dev etc home lib lost+found media mnt opt proc run sbin sys tmp unit_tests usr var
$ cd etc/OpenCL/vendors/
$ ls
Vivante.icd
$ cat Vivante.icd
libVivanteOpenCL.so
$ cd ../../../usr/
$ find . -name libVivanteOpenCL.so 2> /dev/null
./lib/libVivanteOpenCL.so