Re: Partitions corrupted on a drive

[W. Neal Lewis]

Bruce,

A very interesting idea. I have been thinking about getting into Linux 
and this may be the opportunity.


Which version of Ubuntu (or Fedora, maybe?) would run on a G4 PPC?

I'm game to give it a try, but would need to back up the disk that has 
the problems first.


Thanks.

Neal Lewis

On 12/29/16 7:50 PM, Thomas Fritsch wrote:
i'm not super certain and Mght cause more problems than it'd solve 
but there are partitioning tools in UbuntuMATE that should work on 
your Powermac Model After  you'd install hfstools (which can still be 
done in an liveCD Session)


--
Bruce Johnson
University of Arizona
College of Pharmacy
Information Technology Group

Institutions do not have opinions, merely customs



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Re: Partitions corrupted on a drive

[W. Neal Lewis]

Bruce,

Thank you.

I wish it did.

However, that information puts me one step closer to a solution.

Thanks again.

Neal Lewis

On 12/29/16 6:34 PM, Bruce Johnson wrote:

Would a newer version of DiskWarrior (4.0) be able to fix the problem?


Disk warrior fixes volume catalog and index issues, not disk and 
partition issues.


--
Bruce Johnson
University of Arizona
College of Pharmacy
Information Technology Group

Institutions do not have opinions, merely customs


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Re: Partitions corrupted on a drive

[Mac User #330250]

Hello!

You failed to give some vital information. Is this a bootable drive in a 
Power Mac? Which version of Mac OS X are you running? Are the partitions 
accessible at all?


Normally the Apple Partition Map (APM) is stored in the first 64 sectors 
and if they are not corrupted the partitions should be available from 
every OS that can read APM partitions.


TestDisk should be able to find partitions for a APM partitioning 
scheme, but I personally never tried it. Someone else didn't either, 
https://www.broes.nl/2008/01/restore-an-apple-partition-map/, but has 
found an alternative solution to reconstruct the partition table.



You say that all the partitions show up on the desktop? I would 
definitely safe all precious files from the disk before I would try to 
"fix" the partition table.



Which Power Mac are you using? Because if it is a Mac prior to the 
Quicksilver 2002 then it's natural that you don't see partitions behind 
the 128 GB barrier, due to LBA with 28 bits versus LBA48 with 48 bits. 
See 
https://4thcode.blogspot.co.at/2007/12/using-128-gib-or-larger-ata-hard-drives.html 
for more on this and why it is possible that you see the partitions on 
the desktop after booting...


Good luck!

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Re: Partitions corrupted on a drive

[Thomas Fritsch]

i'm not super certain and Mght cause more problems than it'd solve but
there are partitioning tools in UbuntuMATE that should work on your
Powermac Model After  you'd install hfstools (which can still be done in an
liveCD Session)

On Thu, Dec 29, 2016 at 7:34 PM, Bruce Johnson  wrote:

>
> On Dec 29, 2016, at 4:55 PM, W. Neal Lewis  wrote:
>
> A partition or partitions are corrupted on one of the drives on my G4.
>
> The drive is a Hitachi HDP725050GLAT80.
>
> When I boot off the system CD, it can see two partitions, but not the
> other three.
>
> I have an older version of DiskWarrior (3.0.2) which also can see two of
> the partitions, but cannot fix the problem.
>
> Would a newer version of DiskWarrior (4.0) be able to fix the problem?
>
>
> Disk warrior fixes volume catalog and index issues, not disk and partition
> issues.
>
> --
> Bruce Johnson
> University of Arizona
> College of Pharmacy
> Information Technology Group
>
> Institutions do not have opinions, merely customs
>
>
> --
> --
> You received this message because you are a member of G-Group, a group for
> those using G3, G4, and G5 desktop Macs - with a particular focus on Power
> Macs.
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> netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml
> To post to this group, send email to g3-5-list@googlegroups.com
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> group/g3-5-list
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Re: Partitions corrupted on a drive

[Bruce Johnson]

On Dec 29, 2016, at 4:55 PM, W. Neal Lewis 
> wrote:

A partition or partitions are corrupted on one of the drives on my G4.

The drive is a Hitachi HDP725050GLAT80.

When I boot off the system CD, it can see two partitions, but not the other 
three.

I have an older version of DiskWarrior (3.0.2) which also can see two of the 
partitions, but cannot fix the problem.

Would a newer version of DiskWarrior (4.0) be able to fix the problem?

Disk warrior fixes volume catalog and index issues, not disk and partition 
issues.

--
Bruce Johnson
University of Arizona
College of Pharmacy
Information Technology Group

Institutions do not have opinions, merely customs


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Partitions corrupted on a drive

[W. Neal Lewis]

A partition or partitions are corrupted on one of the drives on my G4.

The drive is a Hitachi HDP725050GLAT80.

When I boot off the system CD, it can see two partitions, but not the 
other three.


I have an older version of DiskWarrior (3.0.2) which also can see two of 
the partitions, but cannot fix the problem.


Would a newer version of DiskWarrior (4.0) be able to fix the problem?

I downloaded a free program called Test Disk (7.0). Is anyone familiar 
with that software?


So far, all of the partitions show up on the desktop.

The disk was partitioned originally using the free version (came with 
the drive) of Intech Hard Disk Speed Tools.


I am thinking of buying the current version and seeing if they can 
suggest anything.


Another thing I should do is to buy another disk of the same size, and 
the necessary software, and back up the drive with the partition problems.


Anything I do must be in the $80 or less price range.

Thanks.

Neal Lewis

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