I'm trying to copy an external USB hard drive to another using DD.
dd if=/dev/sdb of=/dev/sdc conv=noerror,notrunc iflag=noatime status=progress
I'm using a live debian 10 distro. During the copy, after some gb copied,the transfert rate starts to decrease and I can see in the syslog that a new removable drive have been found, named say /dev/sdd and fdisk -l tells me /dev/sdc doesn't exist anymore. If I wait the DD transfert stops even if the process is still alive. Using dd for a while, never had this problem before. Any workaround?