I have a couple of Micro SD card here and it seems like only some of them can be flashed correctly. No errors during the flashing process, but only the boot partition turns out to be mountable on my Linux computer and so the RPi fails to boot it (
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(179,2)).
At first I assumed that the issue was just with a very old card that I had lying around (broken sectors or something like that).
But now I have bought a brand new 16GB MicroSD card (SanDisk 16GB 80MB/S), and I get the exact same result: Flashing seems to work, but only the boot partition becomes mountable.
I flashed using:
sudo dd bs=4M if=2017-08-16-raspbian-stretch.img of=/dev/mmcblk0 status=progress conv=fsync 4907335680 bytes (4.9 GB, 4.6 GiB) copied, 397.067 s, 12.4 MB/s 1170+1 records in 1170+1 records out 4907675648 bytes (4.9 GB, 4.6 GiB) copied, 452.665 s, 10.8 MB/s
and then I also I also tried:
sudo dd bs=1M if=2017-08-16-raspbian-stretch.img of=/dev/mmcblk0 status=progress conv=fsync 4906287104 bytes (4.9 GB, 4.6 GiB) copied, 399.06 s, 12.3 MB/s 4680+1 records in 4680+1 records out 4907675648 bytes (4.9 GB, 4.6 GiB) copied, 451.091 s, 10.9 MB/s
Using the lite image instead didn't make a difference.
I also bought a new cheap Fujitsu card that only has 2GB and that card flashed just fine.
My Micro SD cards:
- A very old Vertatim 2GB card (flashing etc works fine)
- A very old SanDisk 8GB card (flashing etc doesn't work correctly)
- A new Fujitsu 2GB card (flashing etc works fine)
- A new SanDisk 16GB card (flashing etc doesn't work correctly)
It almost seems like there are issues with cards bigger than 2GB.
What am I doing wrong?
The output of
sudo fdisk -l /dev/mmcblk0:
Disk /dev/mmcblk0: 14.9 GiB, 15931539456 bytes, 31116288 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: 0x242ad76d Device Boot Start End Sectors Size Id Type /dev/mmcblk0p1 8192 93814 85623 41.8M c W95 FAT32 (LBA) /dev/mmcblk0p2 94208 9585303 9491096 4.5G 83 Linux
sudo cmp /dev/mmcblk0 2017-08-16-raspbian-stretch.img
/dev/mmcblk0 2017-08-16-raspbian-stretch.img differ: byte 4194370, line 1
Edit 3: I just bought another 8GB Micro SD card, this time from the brand 'Intenso'. - Same issue with that card.
Edit 4: Tried it with Etcher instead of dd. - Same results.
Edit 5: I tried it with dd on a different computer and it was able to correctly flash all my cards. But I still need this to work on my system...