hi,
I am trying to run the command
"dd if=/dev/mmcblk1" | dd of=backup_image.img bs 100M
but I get an error as below
-bash: dd if=/dev/mmcblk1: No such file or directory
0+0 records in
0+0 records out
0 bytes copied, 0.00448169 s, 0.0 kB/s
if I do
fdsik -l
I get below details
Disk /dev/ram0: 4 MiB, 4194304 bytes, 8192 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/mmcblk1: 58.2 GiB, 62537072640 bytes, 122142720 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: 0x0dae9249
Device Boot Start End Sectors Size Id Type
/dev/mmcblk1p1 32768 120921279 120888512 57.7G 83 Linux
Disk /dev/mmcblk1boot1: 4 MiB, 4194304 bytes, 8192 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
Disk /dev/mmcblk1boot0: 4 MiB, 4194304 bytes, 8192 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
Disk /dev/mmcblk0: 29.8 GiB, 32010928128 bytes, 62521344 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: 0xda7e0fec
Device Boot Start End Sectors Size Id Type
/dev/mmcblk0p1 32768 61896127 61863360 29.5G 83 Linux
Disk /dev/zram0: 50 MiB, 52428800 bytes, 12800 sectors
Units: sectors of 1 * 4096 = 4096 bytes
Sector size (logical/physical): 4096 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/zram1: 1.9 GiB, 1997320192 bytes, 487627 sectors
Units: sectors of 1 * 4096 = 4096 bytes
Sector size (logical/physical): 4096 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Please note I am using nanopim4v2 board booted with sd card and my emmc card also has the bootable which I want to backup. I am oppening a ssh from a linux ubuntu laptop connected to nanopim4v2 via wlan (router). all is fine but the command of dd as mention above doe not work. Please advise whats going wrong. I need to back up my emmc module has now it got everything I need to run on it. and I spent considerable time. So need to back this up. your help will be much appreciated
