Re: Partitions corrupted on a drive (UPDATE: typos fixed+parts rewritten)

>> But, it is still safer to limit the boot volume to two partitions, the >> first of which is 128 GB (131,072 MB, actual capacity) with the >> remainder >> being used for data storage which is not boot-dependent. > > It really is the only *safe* way. > >> Thereafter, the other volumes may be

Re: Partitions corrupted on a drive (UPDATE: typos fixed+parts rewritten)

About BootX and Open Firmware, I found one more: https://opensource.apple.com/source/bless/bless-11/README.BOOTING It explains that BootX uses OF to load files. And before the QS 2002, OF was limited to LBA28, i.e. 128 GB. The /simple/ truth and the reason for the complicated work-around.

Re: Partitions corrupted on a drive (UPDATE: typos fixed+parts rewritten)

Hello Peter! On 2017-01-09 03:16, peterh...@cruzio.com wrote: It is my understanding that if the LBA48 property has been introduced to O.F. "persistently", then a volume which is larger than 128 GB may indeed be the boot volume. Unfortunately this is not true. During the boot process, the

Re: Partitions corrupted on a drive (UPDATE: typos fixed+parts rewritten)

> (Sorry, my first attempt had numerous errors such as typos. I've also > rewritten parts and added a TO-DO, what I would do). > THIS IS THE UPDATED VERSION OF THE SAME EMAIL. > ... It is my understanding that if the LBA48 property has been introduced to O.F. "persistently", then a volume which

Re: Partitions corrupted on a drive (UPDATE: typos fixed+parts rewritten)

Hello Neal! (Sorry, my first attempt had numerous errors such as typos. I've also rewritten parts and added a TO-DO, what I would do). THIS IS THE UPDATED VERSION OF THE SAME EMAIL. On 2016-12-30 19:34, W. Neal Lewis wrote: Machine Name: Power Mac G4 (AGP graphics) Machine Model:

Re: Partitions corrupted on a drive

Hello Neal! On 2016-12-30 19:34, W. Neal Lewis wrote: Machine Name:Power Mac G4 (AGP graphics) Machine Model:PowerMac3,1 Okay, there you go. The Open Firmware of this Mac doesn't support LBA48 addressing, hence it doesn't support more than 128GB HDDs. Actually, the real limit is

Re: Partitions corrupted on a drive

Make sure you back up the data you can access before you do anything else, just in case. -- -- 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. The list FAQ is at

Re: Partitions corrupted on a drive

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

Re: Partitions corrupted on a drive

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,

Re: Partitions corrupted on a drive

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

Re: Partitions corrupted on a drive

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

Re: Partitions corrupted on a drive

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

Partitions corrupted on a drive

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