I installed Ubuntu 10.04 on a usb stick in persistent install mode. So I could boot the laptop or my desktop computer with the stick, at boot time. Once I needed the 8GB stick for another purposes so I thought about coyping it to my desktop doing from mac os x:
dd if=/dev/disks3s of=/Users/jack/Desktop/usb_copy
Now I am trying to do the opposite, after having used the stick, which was formatted to NTFS, just doing
dd if=/Users/jack/Desktop/usb_copy of=/dev/disks3s
but although I can see that almost of the files are there, I can not boot again. IT is also strange the the file permissions are kind of strange, something like _user
What can I do ?