Seagate Backup can't be opened on another Mac

[stanley17]

I backed up my files on a Seagate Plus for Mac and then that computer crashed. Now when I try to access those files using my other mac I get the message the files can't be opened because I do not have permission to see their contents (and there is a red icon on those file). How can I bypass this and open my files?

 

[GhislainG]

If you have proof of ownership, then you should contact Seagate support and they should be able to help you.

 

[McHenryB]

Run the program as root (i.e. use sudo). But why are you using third-party backup software rather than the excellent Time Machine?

PS I think that I may have misunderstood you; it may be that you just moved files to the disk by dragging and dropping. In either case the probem is, I think, one of permissions. Have a look at this article to see how to view and change file permissions: http://www.chriswrites.com/how-to-change-file-permissions-using-the-terminal/ . Note that you will probably need to prefix the chmod command with sudo (followed by a space).

My original advice still applises. Use Time Machine in future; it is by far the easiest way of backing up OS X files.