I'm trying to clone the internal hard disk of my computer. I've booted using the 16.04 Live USB image and I can see 3 disks:
/dev/sda # Internal SSD, copy source /dev/sdb # Live USB /dev/sdc # External SSD via SATA III USB cable, copy destination
I initiate the copy using the following command:
sudo bash -c "pv /dev/sda > /dev/sdc"
But exactly 20% into the copy operation,
/dev/sdc disappears and the same disk reappears as
/dev/sdd. At this point the copy operation hangs (no error is reported, progress just stops). This failure is repeatable and also happens with variations of the same command using
The disk is 500Gb and has 10 partitions including an EFI partition, a Windows 10 installation, Ubuntu 16.04, and various manufacturer restore bits and pieces.
Why is this device change happening, and what can I do to fully clone this disk?