"backup disk not available" since moving to 5GHz

Dear Community,
I am getting "Backup Disk Not Available" since switching to the 5GHz band.
I've have to leave the 2.4GHz because it's simply too congested round here. All the neighbours have wireless and I kept getting dropout and slow streaming of video and audio.
My Time Machine is extended by an Airport Extreme and both have 2.4 and 5 GHz bands enabled.
I looked on Airport Utility - but that is giving me a nonsense result - my Time Machine is not turned off. The Airport Extreme close to the room where I am - is only there to extend the network, but Airport Utility tells me that that is connected straight to the internet.
What can I do?
Thanks for your time.
Yours,
Amro

A second restart seemed to fix it!

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Backup disk not available - Time Machine

I have an external disk attached to my Airport Extreme through a usb hub and also my printer. Since the upgrade to Yosemite I get constant warnings from TimeMachine "Backup Disk Not Available". In order to make backups I use to

Here is the normal set of changes I tell people to make .. but Yosemite is poor and none of these individually or collectively may help.. sorry.. the issue is directly caused by Apple and until they give a proper fix you are going to be doing jiggery pokery and a lot of hoping for the best.
A factory reset of the TC is the start.. it is required so you can find it again.
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.
Setup the TC again.
ie Start from a factory reset. No files are lost on the hard disk doing this.
Then redo the setup from the computer with Yosemite.
1. Use very short names.. NOT APPLE RECOMMENDED names. No spaces and pure alphanumerics.
eg TCgen5 and TCwifi for basestation and wireless respectively.
Even better if the issue is more wireless use TC24ghz and TC5ghz with fixed channels as this also seems to help stop the nonsense. But this can be tried in the second round.
2. Use all passwords that also comply but can be a bit longer. ie 8-20 characters mixed case and numbers.. no non-alphanumerics.
3. Ensure the TC always takes the same IP address.. you will need to do this on the main router using dhcp reservation.. or a bit more complex setup using static IP in the TC. But this is important.. having IP drift all over the place when Yosemite cannot remember its own name for 5 min after a reboot makes for poor networking. If the TC is main router it will not be an issue.
4. Check your share name on the computer is not changing.. make sure it also complies with the above.. short no spaces and pure alphanumeric.. but this change will mess up your TM backup.. so be prepared to do a new full backup. Sorry.. keep this one for second round if you want to avoid a new backup.
5. Mount the TC disk in the computer manually.
In Finder, Go, Connect to server from the top menu,
Type in SMB://192.168.0.254 (or whatever the TC ip is which you have now made static. As a router by default it is 10.0.1.1 and I encourage people to stick with that unless you know what you are doing).
You can use name.. SMB://TCgen5.local where you replace TCgen5 with your TC name.. local is the default domain of the TC and doesn't change.
However names are not so easy as IP address.. nor as reliable. At least not in Yosemite they aren't. The domain can also be an issue if you are not plugged or wireless directly to the TC.
6. Make sure IPv6 is set to link-local only in the computer. For example wireless open the network preferences, wireless and advanced / TCP/IP.. and fix the IPv6. to link-local only.
There is a lot more jiggery pokery you can try but the above is a good start.. if you find it still unreliable.. don't be surprised.
You might need to do some more work on the laptop itself. eg Reset the PRAM.. has helped some people. Clean install of the OS is also helpful if you upgrade installed.
Tell us how you go.

Time Machine unable to backup. "Backup disk not available"

I have been having issues backing up to Time Capsule for a few weeks. I keep getting error messages. The latest backup attempt was 'delayed'. When I clcik to see why, it says "The backup disk not available". It says the last successful backup was at 8:00 PM tonight, but that doesn't seem to make sense since it says it was delayed.
Are there steps I can take to try and resolve this?
Thanks

I have consistantly had this problem.
Time Machine could not complete the backup.
The backup disk could not be found.
Make sure the backup disk is connected or open the Time Machine preferences to select a different backup disk.
If I unplug it and plug it back in it will probably work, although I have had to totally start from scratch a couple times to get it working.
Is this a DHCP issue or how can I avoid this in the future?
Thanks,

Backup disk not available error

I had been using a Time Capsule as a backup device for years. It has worked very well. Last month, there was some work being done in my house and the contractors knocked over my cable modem and Time Capsule. They weren't damaged, but they got disconnected.
I had trouble getting everything started back up until I reset the Time Capsule to its factory settings and set up a new network, that had the same name as my old one.
The Time Capsule transmits fine, but it won't make backups.
I get a variety of error messagess:
1) Backup disk not available
2) User name or password for backup disk is not available
I know the passwords are correct. The backup disk shows up in Finder. But the Time Capsule won't start backing up.
I have tried deleting an entry from the Preferences folder for the Time Machine and reestablishing it and I get the same error.

This was finally solved by removing every possible permutation of the name of the network and TC from the Keychain and reentering all the passwords.

My time capsule worked for several weeks and is now telling me backup disk not available? What to do?

My time capsule worked for several weeks and now is not backing up. Tells me backup disk not available? Any suggestions?

This is a lion bug..
Generally just rebooting the TC will get it back. Otherwise you need to reset the TC and redo its setup.
Tell us a bit more.. but there is as yet no work around or fix for lion.
Certain things help.. but wireless is also a weak link. It will generally work better by ethernet.
Try and get back if it is still bugging you.. I can suggest some other things.. but I do not know of or read a bullet yet.
(Snow and TC firmware 7.5.2 which I run do not have this issue.. so the bug was introduced with Lion and 7.6 firmware)

Time Machine "Backup Disk Not Available" over WAN

I have port forwarded port 46 (TCP and UDP) to port 548 a Mac mini server running Mac OS X 10.6.8, and I have Time Machine backup disk on it set as a share point with Time Machine support enabled. On my Mac Pro running OS X 10.8.5, I am able to connect via AFP to my server with the address "afp://my-ip-address:46" and can read and write on the backup disk share point. I tested that, and it works. When I am on the same LAN as the server, I can use that disk for Time Machine and have been doing so for years. However, I cannot do a Time Machine backup to that share point over the WAN. When I open Time Machine preferences, I can select the share point as my backup disk, but once I start the backup, it says "Backup disk not available" and fails to start. How could I fix this problem?
In case you're wondering, I forward port 46 to port 548 instead of port 548 to port 548 to minimize hacking attempts. Last time I used a default port, a computer in Taiwan started spamming SSH authentication failures.

I did find this article via Google
<http://www.macgurulounge.com/make-time-machine-remotely-back-up-to-your-time-cap sule/>
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Cannot access time machine, backup disk not available error code.

My time machine stopped backing up. It is a 2TB. I get error code -6584. and says backup disk not available. Coincidentally, I had to reset my time machine for a forgotten password about 6 days ago. Wi-fi works fine, but a few days later when trying to access old files throughout the time capsule I could not. Said my last back up was the day the time machine had to be reset. I have 1.79 of TB used..which is weird my computer is only 4 G and have only filled up 2.4 G of it.
ANy ideas?

We haven't seen report of problem with 6584 for a while. It generally means a corrupted backup. You need to do a verify of the back.
See A5 here. http://pondini.org/TM/Troubleshooting.html
This will take a very very long time if the backup has almost filled the TC.. so at least use ethernet connection.
You do have a problem.. the formatted capacity of a 2TB disk is 1.8TB.. If you have used up 1.79TB then sorry but you really need to erase the TC and start over.
The TM can fill up huge disks if you use parallels or dropbox or any dual boot system that has a virtual disk file.. TM will backup 20GB for every 1KB change. That file is hidden btw so you might not see it but I assure you it will chew up space.
I don't know what you mean by computer having only 4GB. That would make it rather ancient.. Surely even smallest SSD must be 64 or 128GB.

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I have four macs using time machine on a single 1TB drive connected to Airport Extreme through USB. This morning I got the dreaded error-109 on Mac#1. This occured right after I had added Mac#4 to the bunch. While adding the Mac#4, I mounted my airport disk and then used time machine to select it for backup. I forgot to eject it after it had done the initial backup. That was when the error occured on the Mac#1.
Mac #1 C2D Mini 2009 SL 10.6.2
Mac #2 G5 DP L 10.5.8
Mac #3 MBP 2009 SL 10.6.2
Mac #4 MB C2D2006 SL 10.6.2
First I turned off TM on all of the Macs. I mounted the airport disk again, on Mac#1. I deleted the sparsebundle for Mac#1. I opened TM and selected the airport disk for backup. It is now backing up again on Mac#1. When it is finished, I will turn on TM once again on the other macs and see what happens. There is still a chunk of space left on the airport disk, about 680GB after all of the backups

Backup Disk not Available

Hello,
I just got my Time Capsule yesterday and it completed a full back up, but now it says the backup disk is not available. So it hasn't been able to back up since noon today, and my TC is not showing up in my Airport Utility.

Reboot it. that has been an issue for a long while now.. the computer simply loses the disk.

TM Backup disk not available

I have a WD Mybooklive network drive that I use for TM backups for a MBP and MBA. I have "backup while on battery unchecked". Often when either MB is connected to power, TM fails. The TM backup disk, in this case "mybooklive-backup" is not listed under shared resources. The mybooklive is listed. I can force it to appear by rebooting the Mybooklive drive. I've searched the support community for clues but cannot find anything discussing this. Is there a time out in TM that causes the disk to become unavailable if not used for several days?

The only disk that shows in Disk Utility is my hard drive. The network attached storage device does not appear so could not try your suggestion. I have found that the only way to make the backup disk reappear is to reboot the MBL. Once I do that, it reappears in Finder under Shared and show us in Time Machine as an available disk. No idea why the disk will disappear from the available disk list. Still researching solutions. Suggestions are welcome.
Thanks

Time Machine: Backup Disk Not Available

I realize there are a few topics floating around about this issue, but I'm still not finding a solution. Not sure if my situation is different than the others but figured I'd take a shot a describing my scenario in a new thread and seeing if it generates any new ideas.
I have a 2TB Seagate external expansion drive connected to a MacMini on my home network. The drive is formatted as Mac OS Extended (Journaled) and is not partitioned.
I have mounted the drive on my MacBook Pro 2.66/i7 running 10.6.6. I then go to the TM Preference pane and select the drive, enter the username and password for my admin account on the Mini. It indicates that it's preparing and then comes back a minute later with a Time Machine error indicating that the backup drive is not available.
I have an older MacBook Pro, my sons MacBook, and my wife's Macbook also on the network. Each of these Macs can mount the backup drive, select it in the TM Preference pane and successfully begin and maintain the TM backup.
I have created a second "test" account on my MacBook Pro. I have followed the same steps and have had no problems with time machine preparing and successfully beginning the back up account.
So - with those facts - I have had to conclude that there is something amiss with my main account.
Other steps I have taken on my MBP with my main account include:
* Deleting the com.timemachine.plist file from /Library/Preferences - restarting and trying again. No luck.
* Restarting into applejack and performing an "applejack auto restart". No luck
* Removing all timemachine related entries in the Keychain, running Keychain FirstAid. No luck.
* Reformatting the external drive on the Mini, repairing permissions and running a disk repair and starting all over again. No luck.
In each case above a restart was done before attempting to reinitiate the TM process.
So - with out blabbering on with any more details, I think it's clear that I'm at a bit of a loss as to what else I should try. I'm WIDE open to suggestions.

I resolved this issue just this morning (see below). This may not (or may) apply to your situation because yours magically corrected itself, but hopefully it will help somebody.
Environment Architecture: We appear to have a very similar system architecture to the one you describe. In my case, we have 4 macs all relying on Time Machine and a networked 1TB Time Capsule for backups. Each of 3 workstation macs share data from the 4th, which we use as a primary server. I ran into my problem when the Time Capsule filled up and stopped backing up our primary server due to lack of available space. All recommended solutions for freeing up space appeared time consuming, and because we do daily off-site backups through MOZY (we use Time Machine for simplicity of recovery for hourly backups) I could take the "easier" path of just reformatting the Time Capsule's data drive and start again fresh.
Problem identified: Per instructions, I used Airport Utility to erase my Time Capsule data drive, but thought I'd check my existing settings while I was there. Seeing the password prompt, and not remembering for sure what my password was, I thought I'd just reset it to what I wanted. Seemed benign at the time. When I started my 1st system's backup, I was prompted for the Time Capsule's password, and entered the new password. It accepted it as it should have, but then rejected the backup with a message indicating that I had provided the incorrect network account and password. The odd part was that it had originally accepted it, and even flashed the available space on the Time Machine preferences window. After much searching through these topics, I discovered that the password is stored multiple times -- some correctly and some not. Correcting the passwords fixed the problems.
Where to look:
http://support.apple.com/kb/TS2048
Mac OS X 10.5.3 or later: Time Machine - "Backup volume could not be mounted" after changing network volume's password
* Last Modified: October 14, 2008
* Article: TS2048
As it turns out, Apple stores that password in multiple places in your Keychain (don't ask me why!), even using the identical Keychain entry name. All I can presume is that one piece of the software looked in one Keychain entry, and another looked in a different Keychain entry. The passwords were different (one was my original password, and one was my new password). Once I changed them to the same thing on each of my satellite stations, they all worked again and Time Machine is happily chugging along on all workstations.

How to get rid of message "Backup disk not available"?

I use an external disk for Time Machine.
I switch the disk on every couple of days. In the mean time, I get a warning message every hour that:
"Time Machine could not complete the backup, The backup disk is not available".
How can I get rid of this message? It is really becoming irritating.
Patrick

patrick Wursteisen wrote:
I switch the disk on every couple of days.
that kind of beats the purpose of TM backups, which are usually happening on an hourly basis. if you intend to continue this way, you might as well forget about TM and rather create a bootable clone of your startup disk every couple of days. Carbon Copy Cloner or SuperDuper will even allow you to do incremental clones.
another option would be to change the frequency of TM backups using _*Time Machine Editor*_.
happy computing !
JGG

Time capsule backups failing - backup disk not available

All of a sudden I’m getting:
Time Machine could not complete the backup.
The backup disk is not available.
Time machine buddy’s log gives me:
Starting standard backup
Attempting to mount network destination using URL: afp://*.local/Data
NetAuthConnectToServerSync failed with error: 89 for url: afp://*.local/Data
Backup failed with error: 19
I’m connected to the Time Capsule right now (it’s how I connect to the web). I can see it in the shared list in Finder, although connection fails when trying to access it from Finder. What can I do?

Solution - I had the same thing happen to me with a Backup failed with error: 19 and what I did was this.
Stop any time machine backup in Time Machine preferences.
Go into Keychain Access in Utilities.
Go to search field and type "Local"
Delete any files that are of the kind "Time Machine Password". They should end in something like afpovertcp._tcp.local
Now turn on Time Machine back up in Preferences.
Click Select Disk and choose the volume.
You will be requested to enter the password and then it will take some time to establish the link and mount the backup volume. From there it will do a full back up.
Hope it works for you as well as it did for me.
Message was edited by: gfilev

Time Capsule cannot complete the backup, backup disk not available. Help please!

Hi,
I've only ever been able to complete one back up using my time capsule and have been having problems for months! I've tried resetting and restarting the TC, it re-installs successfully and the green light comes onto the TC. However, when I try to backup I get the following message:
Time Capsule cannot complete the backup. The backup disk is not available.
I've tried taking it into the Apple store to the genius bar and they seem to think it is working fine. It seems to have connected successfully to my network at home so I'm struggling to work out what to do. Does anyone have any ideas?
Thanks.

Have you updated to the latest Time capsule firmware?
AirPort Utility software and firmware downloads

Using Time Machine on a network disk getting 'backup disk not available'

I just installed SL on a brand new MBP. on my last MBP I used to backup to a network volume and htis worked fine (also under SL), and my other MBP is also still backing up fine. however I am unable to get it to work on the new one.
Tried to connect the HD to the MBP and make a backup direct, than move the HD to the server in the network and try to connect, TM refuses to backup to the mounted disk.
I followed these instructions with the same result.
http://www.lone-gunman.be/2009/06/22/time-machine-network-drive/
any tips ideas or tricks?
thanks.

Pondini wrote:
What are you backing-up to?
A FW HD connected connected to my MM server hanging in my network
The link in your first post is talking about making TM back up to an unsupported NAS device, but you also mention connecting it "directly" to your Mac, as if it's an external USB or FireWire HD.
Yes to test, I connected the HD direct to my MBP and it did a Backup. Some forums suggest doing this if you can not make a BU over a network to start with. Than connect it in the network and select it as the TM BU, and it works. However, not in my case.
If it is a NAS, especially an unsupported one, it seems to be some sort of problem with the programming on it, or the procedure to connect to it. You'll likely do better contacting the maker.
As said I think the HD is fine, other machines back up to it since ± 18 months with no problems. It must be a setup problem or the likes.
Also be aware that if you have to use that "unsupported devices" Terminal command, you may not be able to do a full system restore from that device. The only way to do one is to boot from your OSX Install disc, and use the installer utility on it, but since you can't apply that command there, it may not recognize your backups.
Worked fine in the past. Did test this in the beginning.

"backup disk not available" since moving to 5GHz

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