Short version: Here’s how to actually delete a sparsebundle Time Machine backup file from a Time Capsule — use Windows.
Long version: We have an Apple Time Capsule here at home and it’s almost always been an incredibly great wifi router with built in storage. The kids, especially, benefit from having all of their laptop files auto-magically backed up via the Time Machine app without me needing to do much of anything. Sweet.
But even a big, fat Time Capsule hard drive eventually gets full. I was looking at the drive on our capsule tonight via the Apple Airport Utility. Each computer backup shows up as a single file that starts with the computer’s name, adds a bunch of junk and ends with the special file format, .sparsebundle. Under the drive tab, there’s just one option to delete and it deletes everything on the disk. That’s not what I wanted to do. I wanted to keep the kids’ laptop backups, stored in the wacky sparsebundle format, but delete some extra folders and an old backup of a computer we don’t use anymore.
So I flipped over to the Finder and down in the “Shared” section I could click through to see the full contents of my Time Capsule’s hard drive. The old sparsebundle was right there so I right clicked on it and choose “delete.” Super. A dialog box asks if I want to permanently delete. I click ok. Then nothing — scrolling bar of nothing that will literally stay up for hours with nothing happening. Yuck.
I tried two solutions I found online but neither worked. One was to right-click on the sparsebundle, choose show package contents, go inside the folder called “bands” and delete bunches of the files in there. Nope — same freeze up.
Another online suggestion recommended doing the show package contents trick and then right clicking on the file called “token,” going to the “get info” screen and unchecking the “locked” check mark. But my token lock box was already unchecked. No dice.
Eventually I found the solution to deleting the unwanted sparsebundle by reading an Apple support board post. The trick is to use Windows. Or, in my case, use VMWare running Windows 8. Open the Windows Explorer and navigate to your Time capsule via the IP address — in the address bar you just type \\ and then the address which for most folks starts with 192.168 and then has two more bits, like 192.168.1.15. A dialog box asks you to log in. I have a password on my Time Capsule but no log in name. I just put anything into the log in name field and typed in my password. Once I was in, all the sparsebundles were displayed and a right click and delete worked in under a minute. So awesome:
UPDATE: In the comments, there’s also a way to force the Finder to connect to the Time Capsule the same way Windows connects via Microsoft’s SMB (Server Message Block) protocol. No Windows required. I haven’t tried it myself, however.