I would like to ask for an advice. I've got LG V40 mobile phone from a friend. Unfortunatelly, he has done factory reset even though he had important photos in the phone (internal memory). I would like to make block a copy via dd and try to rescue at least some photos. Someone already rooted the phone and installed TWRP there and I don't know what else. Now I can only access fastboot and TWRP on the phone. When I list "/dev/block" folder through adb, I can see this:
judypn:/ # ls -la /dev/block/ total 0 drwxr-xr-x 4 root root 2660 2019-09-09 06:33 . drwxr-xr-x 10 root root 4620 2019-09-09 06:33 .. lrwxrwxrwx 1 root root 37 2019-09-09 06:33 bootdevice -> /dev/block/platform/soc/1d84000.ufshc drwxr-xr-x 2 root root 1940 2019-09-09 06:33 by-name brw------- 1 root root 7, 0 2019-09-09 06:33 loop0 brw------- 1 root root 7, 8 2019-09-09 06:33 loop1 brw------- 1 root root 7, 16 2019-09-09 06:33 loop2 brw------- 1 root root 7, 24 2019-09-09 06:33 loop3 brw------- 1 root root 7, 32 2019-09-09 06:33 loop4 brw------- 1 root root 7, 40 2019-09-09 06:33 loop5 brw------- 1 root root 7, 48 2019-09-09 06:33 loop6 brw------- 1 root root 7, 56 2019-09-09 06:33 loop7 drwxr-xr-x 3 root root 60 2019-09-09 06:33 platform brw------- 1 root root 1, 0 2019-09-09 06:33 ram0 brw------- 1 root root 1, 1 2019-09-09 06:33 ram1 brw------- 1 root root 1, 10 2019-09-09 06:33 ram10 brw------- 1 root root 1, 11 2019-09-09 06:33 ram11 brw------- 1 root root 1, 12 2019-09-09 06:33 ram12 brw------- 1 root root 1, 13 2019-09-09 06:33 ram13 brw------- 1 root root 1, 14 2019-09-09 06:33 ram14 brw------- 1 root root 1, 15 2019-09-09 06:33 ram15 brw------- 1 root root 1, 2 2019-09-09 06:33 ram2 brw------- 1 root root 1, 3 2019-09-09 06:33 ram3 brw------- 1 root root 1, 4 2019-09-09 06:33 ram4 brw------- 1 root root 1, 5 2019-09-09 06:33 ram5 brw------- 1 root root 1, 6 2019-09-09 06:33 ram6 brw------- 1 root root 1, 7 2019-09-09 06:33 ram7 brw------- 1 root root 1, 8 2019-09-09 06:33 ram8 brw------- 1 root root 1, 9 2019-09-09 06:33 ram9 brw------- 1 root root 8, 0 2019-09-09 06:33 sda brw------- 1 root root 8, 1 2019-09-09 06:33 sda1 brw------- 1 root root 8, 10 2019-09-09 06:33 sda10 brw------- 1 root root 8, 11 2019-09-09 06:33 sda11 brw------- 1 root root 8, 12 2019-09-09 06:33 sda12 brw------- 1 root root 8, 13 2019-09-09 06:33 sda13 brw------- 1 root root 8, 14 2019-09-09 06:33 sda14 brw------- 1 root root 8, 15 2019-09-09 06:33 sda15 brw------- 1 root root 259, 0 2019-09-09 06:33 sda16 brw------- 1 root root 259, 1 2019-09-09 06:33 sda17 brw------- 1 root root 259, 2 2019-09-09 06:33 sda18 brw------- 1 root root 259, 3 2019-09-09 06:33 sda19 brw------- 1 root root 8, 2 2019-09-09 06:33 sda2 brw------- 1 root root 259, 4 2019-09-09 06:33 sda20 brw------- 1 root root 259, 5 2019-09-09 06:33 sda21 brw------- 1 root root 259, 6 2019-09-09 06:33 sda22 brw------- 1 root root 259, 7 2019-09-09 06:33 sda23 brw------- 1 root root 259, 8 2019-09-09 06:33 sda24 brw------- 1 root root 259, 9 2019-09-09 06:33 sda25 brw------- 1 root root 259, 10 2019-09-09 06:33 sda26 brw------- 1 root root 259, 11 2019-09-09 06:33 sda27 brw------- 1 root root 259, 12 2019-09-09 06:33 sda28 brw------- 1 root root 259, 13 2019-09-09 06:33 sda29 brw------- 1 root root 8, 3 2019-09-09 06:33 sda3 brw------- 1 root root 8, 4 2019-09-09 06:33 sda4 brw------- 1 root root 8, 5 2019-09-09 06:33 sda5 brw------- 1 root root 8, 6 2019-09-09 06:34 sda6 brw------- 1 root root 8, 7 2019-09-09 06:34 sda7 brw------- 1 root root 8, 8 2019-09-09 06:33 sda8 brw------- 1 root root 8, 9 2019-09-09 06:33 sda9 brw------- 1 root root 8, 16 2019-09-09 06:33 sdb brw------- 1 root root 8, 17 2019-09-09 06:33 sdb1 brw------- 1 root root 8, 18 2019-09-09 06:33 sdb2 brw------- 1 root root 8, 32 2019-09-09 06:33 sdc brw------- 1 root root 8, 33 2019-09-09 06:33 sdc1 brw------- 1 root root 8, 34 2019-09-09 06:33 sdc2 brw------- 1 root root 8, 48 2019-09-09 06:33 sdd brw------- 1 root root 8, 49 2019-09-09 06:33 sdd1 brw------- 1 root root 8, 50 2019-09-09 06:33 sdd2 brw------- 1 root root 8, 51 2019-09-09 06:33 sdd3 brw------- 1 root root 8, 64 2019-09-09 06:33 sde brw------- 1 root root 8, 65 2019-09-09 06:33 sde1 brw------- 1 root root 8, 74 2019-09-09 06:33 sde10 brw------- 1 root root 8, 75 2019-09-09 06:33 sde11 brw------- 1 root root 8, 76 2019-09-09 06:33 sde12 brw------- 1 root root 8, 77 2019-09-09 06:33 sde13 brw------- 1 root root 8, 78 2019-09-09 06:33 sde14 brw------- 1 root root 8, 79 2019-09-09 06:33 sde15 brw------- 1 root root 259, 14 2019-09-09 06:33 sde16 brw------- 1 root root 259, 15 2019-09-09 06:33 sde17 brw------- 1 root root 259, 16 2019-09-09 06:33 sde18 brw------- 1 root root 259, 17 2019-09-09 06:33 sde19 brw------- 1 root root 8, 66 2019-09-09 06:33 sde2 brw------- 1 root root 259, 18 2019-09-09 06:33 sde20 brw------- 1 root root 259, 19 2019-09-09 06:33 sde21 brw------- 1 root root 259, 20 2019-09-09 06:33 sde22 brw------- 1 root root 259, 21 2019-09-09 06:33 sde23 brw------- 1 root root 259, 22 2019-09-09 06:33 sde24 brw------- 1 root root 259, 23 2019-09-09 06:33 sde25 brw------- 1 root root 259, 24 2019-09-09 06:33 sde26 brw------- 1 root root 259, 25 2019-09-09 06:33 sde27 brw------- 1 root root 259, 26 2019-09-09 06:33 sde28 brw------- 1 root root 259, 27 2019-09-09 06:33 sde29 brw------- 1 root root 8, 67 2019-09-09 06:33 sde3 brw------- 1 root root 259, 28 2019-09-09 06:33 sde30 brw------- 1 root root 259, 29 2019-09-09 06:33 sde31 brw------- 1 root root 259, 30 2019-09-09 06:33 sde32 brw------- 1 root root 259, 31 2019-09-09 06:33 sde33 brw------- 1 root root 259, 32 2019-09-09 06:33 sde34 brw------- 1 root root 259, 33 2019-09-09 06:33 sde35 brw------- 1 root root 259, 34 2019-09-09 06:33 sde36 brw------- 1 root root 259, 35 2019-09-09 06:33 sde37 brw------- 1 root root 259, 36 2019-09-09 06:33 sde38 brw------- 1 root root 259, 37 2019-09-09 06:33 sde39 brw------- 1 root root 8, 68 2019-09-09 06:33 sde4 brw------- 1 root root 259, 38 2019-09-09 06:33 sde40 brw------- 1 root root 259, 39 2019-09-09 06:33 sde41 brw------- 1 root root 259, 40 2019-09-09 06:33 sde42 brw------- 1 root root 259, 41 2019-09-09 06:33 sde43 brw------- 1 root root 259, 42 2019-09-09 06:33 sde44 brw------- 1 root root 259, 43 2019-09-09 06:33 sde45 brw------- 1 root root 259, 44 2019-09-09 06:33 sde46 brw------- 1 root root 259, 45 2019-09-09 06:33 sde47 brw------- 1 root root 259, 46 2019-09-09 06:33 sde48 brw------- 1 root root 259, 47 2019-09-09 06:33 sde49 brw------- 1 root root 8, 69 2019-09-09 06:33 sde5 brw------- 1 root root 259, 48 2019-09-09 06:33 sde50 brw------- 1 root root 259, 49 2019-09-09 06:33 sde51 brw------- 1 root root 259, 50 2019-09-09 06:33 sde52 brw------- 1 root root 259, 51 2019-09-09 06:33 sde53 brw------- 1 root root 8, 70 2019-09-09 06:33 sde6 brw------- 1 root root 8, 71 2019-09-09 06:33 sde7 brw------- 1 root root 8, 72 2019-09-09 06:33 sde8 brw------- 1 root root 8, 73 2019-09-09 06:33 sde9 brw------- 1 root root 8, 80 2019-09-09 06:33 sdf brw------- 1 root root 8, 81 2019-09-09 06:33 sdf1 brw------- 1 root root 8, 82 2019-09-09 06:33 sdf2 brw------- 1 root root 8, 83 2019-09-09 06:33 sdf3 brw------- 1 root root 8, 84 2019-09-09 06:33 sdf4 brw------- 1 root root 8, 85 2019-09-09 06:33 sdf5 brw------- 1 root root 8, 96 2019-09-09 06:33 sdg brw------- 1 system system 8, 97 2019-09-09 06:33 sdg1 brw------- 1 root root 254, 0 2019-09-09 06:33 zram0 brw------- 1 root root 254, 1 2019-09-09 06:33 zram1
There is no device like "/dev/block/mmcblk0". This should represent whole device internal memory. Am I right? What could be a problem? Or how can I address and copy (block level) whole internal memory? My knowledge about Android is really limited so I appreciate every hint you can give me. Thank you!
sd[a|b|c|...]andmmcblk[0|1|2|...]are just naming conventions in Linux kernel for different types of storage devices. Read this: https://www.dell.com/support/kbdoc/en-pk/000132092/ubuntu-linux-terms-for-your-hard-drive-and-devices-explained – Irfan Latif Nov 01 '21 at 17:59