Mac OS forum


Time machine initialisation very slow

by fosterpapillon / December 29, 2012 3:29 PM PST

I've just bought a new iMac and I've moved my two external HDs from the old Mac to the new. I've designated a 1TB HD as my Time Machine disk and started a new back-up of 92 GB (excluding all external HDs, System files, etc). The HD is mains-powered and has a USB2 connection.

The back-up ran - it took 8 hours and then stalled for over two hours at the "Cleaning Up" stage, so I just restarted the Mac and erased the HD.

I've repeated the process and the message of time to go varies from 6 to 7 hours.

This never happened on the old Mac - a new back-up took only an hour or two.

Is something wrong?


Answer This Ask For Clarification
Discussion is locked
You are posting a reply to: Time machine initialisation very slow
The posting of advertisements, profanity, or personal attacks is prohibited. Please refer to our CNET Forums policies for details. All submitted content is subject to our Terms of Use.
Track this discussion and email me when there are updates

If you're asking for technical help, please be sure to include all your system info, including operating system, model number, and any other specifics related to the problem. Also please exercise your best judgment when posting in the forums--revealing personal information such as your e-mail address, telephone number, and address is not recommended.

You are reporting the following post: Time machine initialisation very slow
This post has been flagged and will be reviewed by our staff. Thank you for helping us maintain CNET's great community.
Sorry, there was a problem flagging this post. Please try again now or at a later time.
If you believe this post is offensive or violates the CNET Forums' Usage policies, you can report it below (this will not automatically remove the post). Once reported, our moderators will be notified and the post will be reviewed.

All Answers

Collapse -
Not necessarily,
by mrmacfixit Forum moderator / December 29, 2012 10:03 PM PST

the first backup usually takes forever and is best left to its own devices.

Just leave it running and you will probably find that it will, eventually, get itself sorted out.


Collapse -
I think it's died
by fosterpapillon / December 30, 2012 5:49 AM PST
In reply to: Not necessarily,

I erased the HD and tried again - this time the estimated time was 19 hours. I quit and erased it yet again and now Disk Utility tells me that it's a 137 GB drive - somewhere, I've lost 860 GB!

A quick check yesterday showed that transfer of a 5 GB folder took about 5 times as long to the Time Machine HD as to the other external drive, so I think it's dead.

Thanks for the comments.


Collapse -
It's a possibility, but
by mrmacfixit Forum moderator / December 30, 2012 7:45 AM PST
In reply to: I think it's died

try the initialization again, just for fits, grins and giggles.


Collapse -
No luck
by fosterpapillon / December 30, 2012 1:07 PM PST

No - I may try it on a PC and see if a Format there does any good but I'm not hopeful.


Collapse -
New HD much quicker
by fosterpapillon / December 30, 2012 3:41 PM PST
In reply to: No luck

I partitioned my 2TB drive to make a new Time Machine - 200 GB backed up in 4 hours.


Popular Forums
Computer Help 49,613 discussions
Computer Newbies 10,349 discussions
Laptops 19,436 discussions
Security 30,426 discussions
TVs & Home Theaters 20,308 discussions
Windows 10 360 discussions
Phones 15,802 discussions
Windows 7 7,351 discussions
Networking & Wireless 14,641 discussions


$16,000 used SUVs

Whether you like your SUVs cute or capable, or some blend of the two, we've got a wide variety of choices in Roadshow's first collection of Editors' Used Picks.