murat@mbuntu:~/img$ 
murat@mbuntu:~/img$ dd if=zero.img of=test.mimg bs=4M
305+0 records in
305+0 records out
1279262720 bytes (1,3 GB, 1,2 GiB) copied, 66,4101 s, 19,3 MB/s
murat@mbuntu:~/img$ file zero.img 
zero.img: symbolic link to /media/murat/3d0e442e-8cfc-4fe7-83e8-5ef197755b8a/Images/Armbian_5.25_Orangepizero_Debian_jessie_default_3.4.113.img
murat@mbuntu:~/img$ 
murat@mbuntu:~/img$ dd if=/media/murat/3d0e442e-8cfc-4fe7-83e8-5ef197755b8a/Images/Armbian_5.25_Orangepizero_Debian_jessie_default_3.4.113.img of=test2.mimg bs=4M
305+0 records in
305+0 records out
1279262720 bytes (1,3 GB, 1,2 GiB) copied, 94,8229 s, 13,5 MB/s
murat@mbuntu:~/img$ 
murat@mbuntu:~/img$ diff test.mimg test2.mimg 
murat@mbuntu:~/img$ 