There are a number of errors with disk access since Lion.. and this behaviour is not uncommon.
See pondini for some of the more advanced solutions.. the normal restart you have tried.
C17 in particular, even though the error is different.
I would factory reset the TC.. and start over with fresh new names.. see C9.. names should be short, no spaces and pure alphanumeric.
There is no final fix.. but there are some other work arounds.
Using wireless seems to exacerbate the problem..
And sometimes using bridge works better than router or other way around on the TC.
Geoff K wrote:
Just getting to your note now. I forgot to mention the MBA sees the time machine and backs up as usual. Does that make a difference to your advice? No other devices using the time machine.
Yes, this is typical. In a network one computer will fail to access the drive and others will sail happily on into the night.
It does not change the advice..
You will need to reset TM on both computers..
This is very easy.. See A4 in the reference I gave.
A factory reset will not damage anything stored on the hard disk.. so the TM will reconnect to the drive and continue on hopefully.. sometimes the actual backup that is giving trouble needs to be deleted and start over.. but you can verify the backup to make sure it is intact at least.. and TM after a reset will do this anyway.
What happened to cause the problem .. your week's vacation.. that is caused by spontaneous voodoo infiltration of the micro circuits.. it is very common.. almost predictable.. I read it here continually. People go away.. turn off their stuff and it never works properly again. I should write a paper on the voodoo laws of the lonely TC that corrupts itself to express anger at your absence.. rather like a cat marking or a dog whining.
I'm back again. Finally got around to working on my TM problem. Nothing has worked following pondini instructions so I'm down to erase and start over. I have a CCC clone of each computer so I'm not so worried about erasing the Time Capsule. In pondini last level, it says to "zero out" the Time Capsule. Will that do the reformatting needed? If my iMac can't see the TC now, how will it see it after a wipeout? Pondini also talks about saving the other back up on the disk but can I do that and still reformat? (The MBA has little on it, not a problem erasing it and starting over even though it sees the TC fine.) Am I correct in thinking reformat?
Yes, reformat is the easiest way.
In airport utility.. go to the disk page and select erase.. there are several options.
The quick erase will delete the file table only.. takes a minute or two.
The zero out data is a full low level format. It will take several hours.
I would never ever use 7 pass even and a 35 pass erase well that would take a month or two. I suppose if you have the launch codes of the local ICBM silo stored in the TC that may be necessary.. but otherwise it is plain stupid.
A quick erase will format the disk ready for operation as will any of the other selections.
You can backup beforehand if you so desire.. Either copy the sparsebundle to a suitable drive directly.. or use archive which has reappeared in the 6.3 version utility. It will also take several hours and the TC will be offline.
If you have CCC backups,, just wipe the drive. And see how it goes.
Full factory reset and I think the Mac will magically see the TC again. If not you need to look more carefully at the networking.
Setup the TC to the Mac in complete isolation.. use ethernet only. Turn off wireless in the Mac.. factory reset the TC .. check that the Mac gets an IP from the TC.. 10.0.1.2 and if you have further access problems then it is wireless.. and that is where the voodoo starts.
OK. Started the process. Well, started thinking about it and following the instructins. Got to the Airport Utility and I see 6 devices under the heading "wireless clients." 2 of them are the computers, 2 are printers, 1 is iphone, and 1 is the satelitte TV. The TV uses it for streaming and notes.
Will all these connections need to be set up again? I don't know how I set them up to start with and I didn't set up the TV, the service tech set that up when he installed the TV. As I recall, all the Mac products had an easy to follow protocol for connecting. Not sure about the printers but because I don't remember it it probably wasn't too traumatic.
Sorry to be a pest. I do OK with computers but the connectivity stuff confuses me. Some days I long for the Mac Plus I started with. If I progress to the wireless voodoo I'll problable be better off just geting a new router.
Wiping the hard drive of the TC will do nothing at all to the settings of the router.. you need to think of the TC as an airport extreme and a hard disk hanging off it. (which it is btw!!). There is the router.. and there is the hard disk.. what you do to the hard disk doesn't change the router.. what you do to the router doesn't change the hard disk. They are separate devices that live in the same box.
If you are at all concerned export the configuration of the TC so you can import it again.. just look at the airport utility and see what is available via the top menu area.. !!
If you started on computers at MacPlus.. you have been in the game for too long not to at least start on networking.. Everything now is networks.. and even us old guys can learn it.
But you have to be prepared to experiment.. either under supervision in a college course or yourself. Grab a manual or three and start.
You're right. I wiped the drive and the Mac sees it again. TM is backing up again on both machines. Thanks much for your help.
Re your comment on networking, I have to agree. Nevertheless, I'm at an infant stage at it and somewhat arrested at this stage. When the 64k macs went out I switched to a Windows machine to be more compatible with the office. What a disaster! After 6 years of fighting crashes, viruses, and uninteligible instructions I came back to an iMac. By then the Mac was much more complicated and I was burned out with computers. I just got the second Mac and the TC 1 1/2 yrs ago, and 2 iphones a year ago. I'm retired so should have pleanty of time but I seem to have less. Too many other interests, I guess. I've been chastised before on these forums for not doing enough for myself.
To your credit, I bought a manual yesterday. Well, perhaps you won't consider it a manual but it's a start; it's "Macs for Seniors for dummies." If that's not simple enough for me I'm hopeless. It appears to focus on Lion, which is what I have now. However, summertime in Wisconsin is short enough that outdoor pursuits will take precidence until November.
Anyway, I appreciate your help. Thanks!
Thanks Geoff.. glad you got it working again.
And thanks for the story of your computer life. We all learn what we need to know.. to do what we want. My dad was an electronic man all his life.. but he hated computers.. I used to dread the almost weekly calls to fix this or that problem he had. Computer support over the phone.. to family member in another state.. that is painful.
The book title is almost over the top.. but I do hope it helps.
A trade school type course will be more helpful though. If you have access to something like that in your busy retired schedule.. it is so much easier when a trainer leads you through it in a network lab.
The trade school course is a good idea. Perhaps this fall...
I see you're based in Australia. Perhaps the "for dummies" series isn't popular there? Some years ago someone came out with a book called "Mac for dummies." It wasn't really at a level for cognitively challenged, but it avoided all the nerdy technical talk. It was aimed at those of us who like the help a computer can give us and want to work with it but don't want to devote half our life to it. The book was a big hit. Ergo, it was followed by lots of "...for dummies" books. Most are quite good for people who don't want to get into the subject deeply but want to use the device/material as it's intended to be used.
Of course, if the book is to help me I've got to read it. Another hurdle in life's Tao.
Again, thanks for your help. Hopefully I'll not bother the forum for a while now.