Time Machine Won't Access My TM Back-Up Drive. Request I "Enter Your Name & Password on My Wireless Network"

Barney, with a combination of your help, a lot of swearing, and trying ONE alternative route I didn't explore, I finally have my TM working again and performing back-ups over the network.

I used your recommendation and deleted all references in the keychain as well as the back-up drive image and "backup backup TM AC", when connected directly.

The next step was to reset my entire router, something which is laborious as 20 minutes of re-entering information, creating new passwords, and tweaking network settings followed by another 15 minutes of entering passwords in many many internet connected devices around the house.

Entering the specialized TM option tab in my router's control panel while wireless, the drive recognized and allowed me to establish a new path in the Mac partition. It's now running a fresh back up and all seems to be well.

Hi Barney. First, thanks for taking time to try to help. It is appreciated.

So, what I have a tale of two cities so to speak.

Wirelessly: If I find my Time Machine back up, the flow looks like such:

I enter TM and see this:

I choose "Select Disk" and see this:

Then hit this road block: Not matter what password I enter, it rejects it. And I know my passwords. I have a revolving set of about 5.

Directly connecting to the back up drive via USB, gives me this:

Then this:

If I enter my password - PRESTO! It unlocks and sync no problem.

And I indeed, have the ability to remove the disk as well.

However, removing the disk still doesn't allow me to remap wirelessly. I tried and ran into the same buzzsaw where it request my password to enter my name and password for TM-AC1900 .... ( which has always been the same password).

I guess if I could get Time Machine to remove the TM AC1900 drive from memory, I would be able to reset but this is essentially the problem I'm experiencing.

I cannot delete TM AC1900 nor can I get the password I know is the correct password to recognize as correct.

Perhaps I'm doing something wrong.

Barney-15E wrote:

Remove the drive from Time Machine and uncheck backup automatically.

Find the entry for the backup drive in your keychain and delete it.

When I enter Time Machine's control panel.

I can uncheck backup automatically.

I select "Select Back Up Drive".

It automatically sees the drive and the TM Back Up "Backups.backupdb" but, there is no function that allows me to uncheck or delete the drive.

The only options are cancel and use disk.

Also, when I enter my keychain there is no option to delete a TM backup?

That's the issue, there is no remove button. I've tried alt+clicking to see if there is a sub-menu of options and using the menu bar up top, and still, no option to remove the drive.

The only options I have are cancel or use disk. If I click "use disk", I still have no further options other than to enter the PW which isn't working or to cancel.

Thank you, Barney.

But then this leaves me at an impasse. As soon as I enter Time Machine preferences, this is the only option I see.

There is no option to remove disk. At best, I see this when after I connect the drive directly via USB.

I'm trying to delete the "Backups.back on TM....", so I can start fresh but it's a buzzsaw. There's no option to delete this profile.

Interesting. On my old machine, I was able to invoke Time Machine wirelessly and page through my back images with no problems. But, if I read this correctly, you're stating that his was essentially a glitch or a spoof that should not have worked - but did?

When I go through the first 3 steps you listed, will I lose all the currently backed up data save points during the overwrite?

I only ask because I don't have enough space on the drive to write an entirely new 250GB volume.