I had an old PC with Lubuntu 18.04 installed.
I installed VirtualBox in order to have Windows XP (as a virtual machine)
During a Lubuntu update to 18.10 the whole system crashed. Before i reinstal Lubuntu I tried to copy VDI file (Virtual Drive of Win XP) in order to avoid reinstalling and setting Win XP again (it took me days to make it fully working)
I start the PC with a Ubuntu on a DVD, but when I try to copy VDI file, a message apears telling me that I 'm not the owner of the file and the copyng is rejected.
Is there any otherway to copy this file?
I have hardly any technical knowledge about Linux. I use it only with via the graphic interface