Want to highlight a helpful answer? Upvote!

Did someone help you, or did an answer or User Tip resolve your issue? Upvote by selecting the upvote arrow. Your feedback helps others! Learn more about when to upvote >

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

TabascoMan Author

Level 1

29 points

Mirrored RAID Rebuild at "0.0%"...

Hello...

I just replaced a failed disk in my RAID set with a brand-new disk (8TB Seagate External - exact same model as the one I already have). I added it to my set (it was "successful" according to MacOS High Sierra) but the "Rebuilding" has been stuck at "0.0%". After a few minutes, my Mac freaks out and completely restarts on its own. When it fully boots, my Mac marks the newly-added disk as "FAILED" in my RAID set. I have no idea why this keeps happening. It's just a loop I am in that I cannot get out of. Is there anyone who might be able to help me out?

Mac mini, macOS 10.12

Posted on Apr 23, 2020 11:49 PM

Reply

Similar questions

13 replies

TabascoMan Author

Level 1

29 points

Apr 24, 2020 4:59 PM in response to TabascoMan

The only one I can see that may or may not pertain to this is:

ENGroupID initWithDataRepresentation - wrong data size -- Failed {data: null}}

But I have no idea if this has anything to do with my problem.

Reply

TabascoMan Author

Level 1

29 points

Apr 24, 2020 5:39 PM in response to BDAqua

I don't see anything that would be it. Others are Unknown Display and the rest are basically Failed Entitlement Check errors which I know has nothing to do with it.

Meanwhile, it's still sitting at "0.7%" and it's been nearly 24 hours.

Reply

TabascoMan Author

Level 1

29 points

Apr 25, 2020 2:02 PM in response to TabascoMan

It's risen to 22 percent and has been slowly growing. I'm considering the matter closed for now. I'll just wait the week.

Reply

Level 10

239,681 points

Apr 24, 2020 5:21 PM in response to TabascoMan

Hmmmm, looks like that one isn't likely it.

https://developer.apple.com/documentation/appkit/nsimage/1519941-initwithdata

Reply

Level 10

239,681 points

Apr 24, 2020 10:40 AM in response to TabascoMan

Did you format the new drive?

Reply

TabascoMan Author

Level 1

29 points

Apr 24, 2020 12:40 PM in response to BDAqua

Yes. Drive has been formatted the same as the one it’s mirroring. Tried again last night but it’s only at 0.7% after nearly 12 hours.

Reply

Level 10

239,681 points

Apr 24, 2020 2:36 PM in response to TabascoMan

Open Console in Utilities & see if we can garner any clues.

Reply

TabascoMan Author

Level 1

29 points

Apr 24, 2020 3:58 PM in response to BDAqua

All right. Console is up. What am I looking for?

Reply

Level 10

239,681 points

Apr 24, 2020 4:33 PM in response to TabascoMan

Any lines that say failed or such?

Reply

TabascoMan Author

Level 1

29 points

Apr 24, 2020 4:40 PM in response to BDAqua

I've probably got about 100+ lines with that word but I'm not sure if any of these pertain to the drive in question. What exactly am I looking for?

Reply

TabascoMan Author

Level 1

29 points

Apr 24, 2020 7:12 PM in response to TabascoMan

Any other ideas? I am still sitting at "Rebuilding 0.7%".

Reply

TabascoMan Author

Level 1

29 points

Apr 24, 2020 7:40 PM in response to BDAqua

It's moved up to "11.4%". I am guessing I should just let it run its course. I'm estimating it's going to take a week to rebuild the whole 1.6 TB's.

Thoughts?

Reply

Level 10

239,681 points

Apr 25, 2020 5:01 PM in response to TabascoMan

Great to hear! :)

Reply

Mirrored RAID Rebuild at "0.0%"...

Welcome to Apple Support Community

A forum where Apple customers help each other with their products. Get started with your Apple ID.

Learn more Sign up