MV Command:unable to remove Target:is a directorthis are somewhat simple as long as we understand the concept. MV or move does not actually move the File/folder to another location within the same device, it merely replaces the point Er in the first sector of your device. The pointer (in Inode table) would be moved and nothing was actually being copied. This would work as long as you stay within the same media/device.
now, when do you try-to-move files from one device to another (/dev/sda1 to/dev/sdb1) you'll run into "inter-device move Failed, unable to remove target:is a directory "error. This happens when MV have to actually move your data to another device, but cannot remove the inode/pointer, because if it Did then there would be no data to fall back to, and if it didn ' t then MV Operation was not really complete because we'll End up with the data in source. Damned if you does and damned if you don't, so it's wise not to does it to begin with!
In such situation CP are best. Copy your data over and then remove your source manually.
Cp-r/media/usb2/clone//MEDIA/USB1
MV Command:unable to remove Target:is a director