On Mon, Apr 07, 2025 at 10:09:29PM +0100, TSS wrote: > Everything is just fine until step 4, when the backup drive refuses to > unmount. If you try to do it yourself, you see: > > umount: /my_backup_mount_point: Device busy
This invariably means some process has one or more files open in the file system. A now-forgotten shell in an xterm that happens to be cd'd into a directory on there will be enough. I would check whether you have something running that you have forgotten -- ps waux could be useful to see whether there is something running that should be moved out of the way. All the best, Peter -- Peter N. M. Hansteen, member of the first RFC 1149 implementation team https://bsdly.blogspot.com/ https://www.bsdly.net/ https://www.nuug.no/ "Remember to set the evil bit on all malicious network traffic" delilah spamd[29949]: 85.152.224.147: disconnected after 42673 seconds.