[Okta Webinar] Learn how to a build a cloud-first strategyRegister Now

x
  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 516
  • Last Modified:

Apple RAID on Tiger - missing partition data

I created a mirror raid in Mac OS X 10.4 consisting of two stripe raids. After moving all my data to the new mirrored drive, I rebooted the mac, only to find that one drive from each stripe raid had their partition data missing. So I now have two copies of "A" and no copies of "B".

I need to find a way (probably via Terminal) to re-create the partition data on those drives. Is this the way to do it?

I've tried using Data Rescue X, which is able to see the two stripe raids (the mirror raid that used to be formed of these stripes has been lost to oblivion). A Thorough scan in Data Rescure is reported to last 53,000 minutes... and it crashes after 8hrs of hammering my Dual 2.0 G5 (4GB ram)

Diskwarrior for Tiger is not out yet, but to my understanding, it needs the partition data to do its thing. I'm not aware of any mac app that is able to fix/create parition data.

The drives in question are all identical Maxtor Diamondmax 10, 250GB, about 3 months old. They were all formated in Tiger, where the RAID was created using HFS+ Journaled.

See RAID creation log  by Disk Utilty
http://www.coolnicks.co.uk/raidlog.txt

Cheers
0
coolnicks
Asked:
coolnicks
  • 4
  • 4
1 Solution
 
Duncan MeyersCommented:
It doesn't look hopeful. I suspect that your next stop should probably be a data recovery company, although you might like to try Knoppix (www.knoppix.org) - you may be able to read the "missing" drives.  

BTW - for what it's worth, if you rebuild the RAID set, you might like to create two mirror sets and then create the stripe set across the two mirrors (RAID 10). The RAID set you've created is RAID 0/1 which is not as fault-tolerant (although in a 4 disc array, that is splitting hairs.).
0
 
coolnicksAuthor Commented:
This issue was never resolved, it was just decided the data was lost!
0
 
Duncan MeyersCommented:
No opinion of any great importance....
0
Windows Server 2016: All you need to know

Learn about Hyper-V features that increase functionality and usability of Microsoft Windows Server 2016. Also, throughout this eBook, you’ll find some basic PowerShell examples that will help you leverage the scripts in your environments!

 
coolnicksAuthor Commented:
Thanks, glad i could help.
0
 
Duncan MeyersCommented:
??? I'm conufsed???
0
 
coolnicksAuthor Commented:
I took your comment as being arsey/rude so was being sarcastic :p
0
 
Duncan MeyersCommented:
Nononononononononononono - the response was to LucF's query - sorry if I seemed rude...

0
 
coolnicksAuthor Commented:
Ahhhh i see, sorry, i thought it was in reply to mine. All is well then :)
0
 
rindiCommented:
coolnicks,

No comment has been added to this question in more than 21 days, so it is now classified as abandoned..
I will leave the following recommendation for this question in the Cleanup topic area:
Accept: meyersd

Any objections should be posted here in the next 4 days. After that time, the question will be closed.


Rindi
EE Cleanup Volunteer
0

Featured Post

What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

  • 4
  • 4
Tackle projects and never again get stuck behind a technical roadblock.
Join Now