How to disconnect from Internet with Time Capsule unaffected?

Yes, but do explain if you are using internet at all.. or want no internet on the computer?? If you want internet and backup at the same time without the TC being connected to the internet then both must connect to different input.. either wifi or ethernet.. so if internet uses wifi .. TC can use ethernet but it is a complicated setup.. it is hugely easier to plug a USB drive directly into the computer.

Reset the TC to factory.. it will go back to default setup which is router.

If you have issues doing this do it manually by ethernet.

Airtport Utility can't find Airport Time Capsule on either of my 2009 Macs

Once you setup in router mode ignore all the problems..there will be a whole stack of them.. due to no WAN connection.

OR

Use static IP method here.

https://discussions.apple.com/thread/5981989?answerId=25135547022#25135547022&ac_cid=tw123456#

My objective is to use TC for backups (its working fine at present) but I want no internet (neither wifi (turned off already) nor Ethernet (If I disconnect the cable from the TM, then TM won't work (green light changes to yellow, backups then do not happen)..

You are not reading the material.. the post I gave you already answers all the questions.

Anyway here goes again.

These are the steps for manual configuration.

Please confirm every step. If any step fails quote the step.. take a screenshot and show me what is happening.

1. In the computer.. IPv6 is set to link local in ethernet (wireless is turned off). See screenshot in 4 below. Configure IPv6 for correct setting.

2. TC LAN port is plugged into the computer by ethernet.. and nothing else. No WAN connection.. no other connection.

3. Factory reset.

Factory reset universal

Power off the TC.. ie pull the power cord or power off at the wall.. wait 10sec.. hold in the reset button.. be gentle.. power on again still holding in reset.. and keep holding it in for another 10sec. You may need some help as it is hard to both hold in reset and apply power. It will show success by rapidly blinking the front led. Release the reset.. and wait a couple of min for the TC to reset and come back with factory settings. If the front LED doesn’t blink rapidly you missed it and simply try again. The reset is fairly fragile in these.. press it so you feel it just click and no more.. I have seen people bend the lever or even break it. I use a toothpick as tool.

N.B. None of your files on the hard disk of the TC are deleted.. this simply clears out the router settings of the TC.

4. Make sure you are getting an IP in the computer from the TC.. Computer should be 10.0.1.2 (small variation won't matter) the router must show 10.0.1.1 after a reset.

This is from the computer.. network preferences.

5. Open the airport utility and go to the top menu area. Open File / Configure Other.

6. Type in your IP address.. after a factory reset there is no password required. But if it complains it is public

Click ok.

7. You will then get the full edit screens where you can manually setup the TC to whatever you want.

8. I strongly recommend changing to all SMB compatible names, ie short 2-20 characters.

No spaces and Pure alphanumeric.

eg

9. In your case disable wireless. Normally people will create a wireless network.

10. Set up correct mode. Open the network tab.

Because you want to do this stand alone.. you must use DHCP and NAT.. but ignore the errors.

The internet tab can be left DHCP.. you will get errors.. ignore them all.. So the light goes green..

You will get errors for no wan connection .. no dns.. no loads of stuff.. ignore every single error.. so the light goes green.. OR cover the light with black tape.. some effect.. you are ignoring the setup errors.

11. Now you can mount the TC hard disk in finder..

Use Go Connect to Server. from the top menu..

Type in AFP://10.0.1.1

Type in the password.. public if you don't change it and save to the keychain.

You can now use your TC in stand alone backup.

I can see from the names in the airport utility you have not factory reset it.. Or you have multiple units and I cannot see enough info about why it failed.

Start again.. when it fails you have messed up a step.. so go back to the start.

One thing I do need to add.. make sure you switch the wireless off in the computer.. and switch the airport utility over to ethernet connection.. this is not necessary with decent OS but since Yosemite.. anything goes. By default it uses wifi.. and only when ethernet is connected can you select it.. and the most amazing thing is where you select it. Other WiFi Devices. Ethernet is apparently in Apple's mind a subset of WiFi.

Hi.. thanks for your screenshot.. you did it with a camera.. instead of using Command + Shift +4 which makes a direct shot of the screen.. no matter.

There are a couple of things you did not do..

1. You did not fix the name.. The 4th shot down clearly shows the name is still wrong.

2. You still have ethernet plugged into the TC WAN port.. you have an IP address.. 192.168.100.2

The only way you can get that IP is by being plugged into a router.. please unplug this from WAN.

There are two wires plugged into the TC..

1 A power cord.

2. One ethernet cord .. TC LAN port to computer.

Nothing else.

The computer must have its wifi off.

Then internet is impossible.

Mount the TC disk in finder.. us Go, Connect to server.. type in SMB://10.0.1.1

It should work. If not I need more screenshots that show what you are doing.. I want a picture of the TC showing just the one ethernet cord.. and I want wireless off in the computer and the TC.. then nothing can mess up your computer isolation.

I see no reason now for it not to work.

Did you delete the old Time Machine backup setup?

See A4 here. http://pondini.org/TM/Troubleshooting.html

As stated you are using the TC in a way that will give errors.. it is impossible to avoid the errors.. because you are using the TC in a way it is not designed for. So you select ignore. When you ignore all the errors it will go green.

Let me do the whole thing again.. but this is the end.. sorry.. but you are wasting your time and an expensive Time Capsule.. when a $100 USB drive will do this with no setup issues at all.

I take my perfectly good TC and plug it by ethernet into the computer.. wireless off.

Factory reset.

Open the airport utility.. so here we go.

Type the IP into configure other.

Up comes the full manual setup.. starting from summary screen.. on a freshly reset TC..

Go to Base Station and fix the name.

You can skip internet.. go to wireless. Select Off

You can now update.

Nothing else needs changing.

Click on each error and ignore it.

Now you have a nice green TC with lots of ignored errors.

At this point I will post and jump to the TM setup.

You have a working TC plugged into your computer and ready for setup.. skip the Finder stuff.. that is not necessary at this stage. I was being too complicated.. but I did need to use go, connect to server to enable Finder to see the disk. I do not know why the TC is not automatically mounted.. but Time Machine will do that for you.

This is what I did.. i run mountain lion.. what you have to do might be slightly different.. and you might need to start from pondini reset of Time Machine.. A4.

I simply added the backup.

Open your Time Machine preferences.

Click on Select Disk.

Click the TC disk.. It should be in the list.. if not mount it in finder first.

In yours it should simply list as data. But it should show clearly..

Select Use Disk.

choose if you wish to use or replace.. I didn't want to mess up my existing backup so I selected Use Both. In your case it should replace whatever you used before.

You need to type in the password. Unchanged it is public.

It is now waiting to start the backup.

So I selected backup now.

Voila .. back up is running.

In Finder you see it has mounted the Time Machine under devices and is backing up to it.

After 30min the backup is now 25GB so around 50GB/hr which is right on estimates.

There it is .. backup to a TC in full network isolation.

Here is why this is worst use of a TC.

A USB drive is 1000% easier to setup.. no network messing around.

Time Machine is easier to setup.

Time Machine is more reliable on local drives.

Time Machine is faster.

USB drives of the same capacity as the Time Capsule cost 1/3 the price.

You can sell the TC on ebay and buy a much larger capacity USB drive with the proceeds.. have faster more reliable backups.

Not waste weeks of your time configuring something that is not designed for the job.. This is using a screw driver as a chisel. Or a wrench as a hammer.. it works but poorly. There is no good reason to do it when hammers and chisels are cheaper.

You are confusing Time Machine and Time Capsule I think..

Time Machine will backup to a USB drive. It is identical to backup to a Time Capsule.

Except perhaps that my backups are for relatively large files which are regularly changing in some bulk. TM has the ability to update backups around the clock auto.

Same.. TM can use USB or TC.. it auto backs up all your files.

The key point (i think) is that if I used a separate bog-standard USB drive, I would have to copy and recopy the backup (taking a long time even with the fastest USB cable) with such regularity, it would become a real chore. Unwanted.

No, this is not the case.. TM runs your backups not you. it auto backs up your files to whatever target disk you select.. USB is better.

USB is faster even bog standard USB drive with USB2 is faster than network backup over gigabit. Sorry but just do the test.. I can get twice the speed from USB2 and much much more from USB3.

In addition, TM auto encrypts too. I know I could ( if I learned how) to encrypt a disk image, but again this takes a long time..and I need very regular backups..

Same.. you can select encrypt in TM.. It then backs up to target drive.. USB or TC makes no difference whatsoever. NONE. Except USB is cheaper, faster more reliable.

So, TM is ideally suited for my requirements

Sure is.. and it will use Local Disks .. that means any disk plugged into your computer.. or network disk.

You simply select the target disk in the TM preferences.. it will use USB, Firewire, Thunderbolt, or Suitable Network drives. Or even internal disks in a Mac Pro.