Can not boot from a RAID 5 volume

Dear Friends,
I have a Mac Pro (3 GHZ) with RAID that will not boot off of a RAID 5 volume. Here's the details:
The unit has 4 768 GB drives that I have made into one RAID 5 set. After that I broke it down into 2 two volumes one for OS (200 GB) and one for storage (the balance of the RAID). After that I copied a known good image to the OS volume.
The Start-up disk utility on the DVD sees the OS but when I boot it sits for a long time and eventually gives me what Apple calls the prohibited icon; a circle with a line-through it like Ghostbusters.
The patron table is good, and I have done this on another Mac Pro. I have tried to rebuild the RAID a few times with no luck. Ideas would be appreciated. Thanks!

My guess is that the Mac OS X system is damaged. You may need to use the Sysytem CD to perform an archive and install.
For those interested in bootable RAID cards on the Mac Pro, the Areca is the only non-Apple solution that I have found with this capability. You can read more about it here:
http://www.amug.org/amug-web/html/amug/reviews/articles/areca/1221x/
Have fun!

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Not booting from 10.4.8 volumes after upgrade from 10.4.7

I'm sorry to report that my aged G4 450 MHz AGP with 4 internal Hard disk drives no longer boots from any of the 2 volumes upgraded to Mac OS X 10.4.8 as soon as it was started from another volume!
All was working fine as long as 10.4.7 was installed on the 2 232 GB disks connected to the SIIG ATA133 controller. I could boot from any OS on any of the 4 disks, 5 partitions:
internal ATA66 bus:
18 GB disk, 2 partitions: 'IBM_18GB' with OS 9.2.2 and TechTool Pro's 'eDrive' with 10.4.7
71 GB disk, 1 partition 'IBM_71GB' with OS 9.2.2
PCI SIIG ATA133 controller:
232 GB disk, one partition 'I1232GB' with 10.4.7, now upgraded to 10.4.8 and no longer bootable
232 GB disk, one partition 'I2232GB' with 10.4.7, now upgraded to 10.4.8 and no longer bootable
Now I can only boot from the Mac OS 9.2.2 or the eDrive 10.4.7 partitions.
What I did so far: 'I2232GB' was my main OS X startup volume, 'I1232GB' contains a clone of it, plus additional folders like software base and backups.
After upgrading 'I2232GB' to Mac OS X 10.4.8 through Software Update and repairing permissions all was OK as long as the Mac was just shut down or re-started: it always booted up in Mac OS X 10.4.8 from 'I2232GB' without any problems.
The next day I booted from 'I1232GB' to do the same there.
Afterwards I could no longer boot in Mac OS X 10.4.8 from 'I2232GB' nor in in Mac OS X 10.4.8 from 'I1232GB': it just gets to the grey screen with the Apple logo, but the round circle underneath indicating some progress never appears. I left it there for hours: it just hangs.
With the Option key held at startup I could boot from the other partitions with Mac OS 9.2.2 or the eDrive with 10.4.7. None of their Startup Control Panels was able to get me back to 10.2.8!
So I booted from the TechTool Pro 4.5.1 DVD to Optimize both volumes, 'I1232GB' & 'I2232GB', always Files only.
Then I booted from the DiskWorrior 3.0.3 CD to rebuild the directories of both volumes, 'I1232GB' & 'I2232GB'.
Still I can not boot from either 'I1232GB' or 'I2232GB' in Mac OS X 10.2.8!
Downloaded the Mac OS X 10.2.8 Compo Update (for PPC) and installed it onto both 'I1232GB' & 'I2232GB' while booted from the eDrive which I keep on Mac OS X 10.4.7 - no luck either, still I can not boot from either 'I1232GB' or 'I2232GB' in Mac OS X 10.2.8!
Then I backed up the users folder from 'I2232GB' onto 'I1232GB', booted from Mac OS 9.2.2 and used Intech's Hard Disk Speedtools 3.6 to format 'I2232GB', afterwards initialized it with Alsoft's Plus Maximizer Extension for a Block Size of 512 Bytes.
Installed Mac OS X 10.4 from DVD, as well as iLive '06 and upgraded everything to the latest releases with Software Update. All was working fine with all the required reboots until another startup volume was chosen: afterwards again I can no longer boot back into Mac OS X 10.2.8 on the fresch installed 'I2232GB'!
Any help would be appreciated.
Here is some information found by System Profiler from Mac OS X 10.4.7, eDrive, let me know if you need more:
Hardware Overview:
Machine Name: Power Mac G4 (AGP graphics)
Machine Model: PowerMac3,1
CPU Type: PowerPC G4 (2.8)
Number Of CPUs: 1
CPU Speed: 450 MHz
L2 Cache (per CPU): 1 MB
Memory: 2 GB
Bus Speed: 100 MHz
Boot ROM Version: 4.2.8f1
Serial Number: XA00715VHSF
Sales Order Number: M7628LL/A
ATA Bus:
IBM-DPTA-372050:
Capacity: 19.12 GB
Model: IBM-DPTA-372050
Volumes:
IBM_18GB:
Capacity: 13.12 GB
Available: 6.96 GB
eDrive:
Capacity: 6 GB
Available: 3.03 GB
IBM-DTLA-307075:
Capacity: 71.59 GB
Model: IBM-DTLA-307075
Volumes:
IBM_71GB:
Capacity: 71.59 GB
Available: 39.65 GB
ATA Bus:
PIONEER DVD-RW DVR-107D:
Model: PIONEER DVD-RW DVR-107D
Firmware Revision: 1.21
Interconnect: ATAPI
Burn Support: Yes (Apple Shipped/Supported)
Cache: 2000 KB
IOMEGA ZIP 100 ATAPI:
Model: IOMEGA ZIP 100 ATAPI
ACARD,6880M:
Name: ACARD,6880M
Type: scsi
Bus: PCI
Slot: SLOT-C
Vendor ID: 0x1191
Device ID: 0x0009
Subsystem Vendor ID: 0x1191
Subsystem ID: 0x0009
Revision ID: 0x0003
SCSI Parallel Domain 65536:
Initiator Identifier: 7
ATA HDT722525DLAT80:
Capacity: 232.89 GB
Manufacturer: ATA
Model: HDT722525DLAT80
Revision:
Removable Media: Yes
BSD Name: disk2
OS9 Drivers: Yes
SCSI Target Identifier: 0
SCSI Logical Unit Identifier: 0
S.M.A.R.T. status: Not Supported
Volumes:
I1232GB:
Capacity: 232.89 GB
Available: 14.1 GB
Writable: Yes
File System: HFS+
BSD Name: disk2s3
Mount Point: /Volumes/I1232GB
ATA HDT722525DLAT80:
Capacity: 232.89 GB
Manufacturer: ATA
Model: HDT722525DLAT80
Revision:
Removable Media: Yes
BSD Name: disk3
OS9 Drivers: Yes
SCSI Target Identifier: 2
SCSI Logical Unit Identifier: 0
S.M.A.R.T. status: Not Supported
Volumes:
I2232GB:
Capacity: 232.89 GB
Available: 180.11 GB
Writable: Yes
File System: Journaled HFS+
BSD Name: disk3s3
Mount Point: /Volumes/I2232GB
The RAM consists of 4 identical modules and is about 1 year old:
DIMM0/J21 to DIMM3/J24:
Size: 512 MB
Type: SDRAM
Speed: PC133-333
Status: OK
Many thanks for your help!
Josef
Apple G4 AGP Mac OS X (10.4.8) 4 internal hard disks, dual layer DVD-RW, 2GB RAM

What I did so far: 'I2232GB' was my main OS X
startup volume, 'I1232GB' contains a clone of it,
plus additional folders like software base and
backups.
After upgrading 'I2232GB' to Mac OS X 10.4.8
through Software Update and repairing permissions all
was OK as long as the Mac was just shut down or
re-started: it always booted up in Mac OS X 10.4.8
from 'I2232GB' without any problems.
The next day I booted from 'I1232GB' to do the same
there.
Afterwards I could no longer boot in Mac OS X 10.4.8
from 'I2232GB' nor in in Mac OS X 10.4.8 from
'I1232GB': it just gets to the grey screen with the
Apple logo, but the round circle underneath
indicating some progress never appears. I left it
there for hours: it just hangs.
With the Option key held at startup I could boot from
the other partitions with Mac OS 9.2.2 or the eDrive
with 10.4.7. None of their Startup Control Panels was
able to get me back to 10.4.8!
So I booted from the TechTool Pro 4.5.1 DVD to
Optimize both volumes, 'I1232GB' & 'I2232GB',
always Files only.
Then I booted from the DiskWorrior 3.0.3 CD to
rebuild the directories of both volumes, 'I1232GB'
& 'I2232GB'.
Still I can not boot from either 'I1232GB' or
'I2232GB' in Mac OS X 10.4.8!
Downloaded the Mac OS X 10.4.8 Compo Update (for PPC)
and installed it onto both 'I1232GB' & 'I2232GB'
while booted from the eDrive which I keep on Mac OS X
10.4.7 - no luck either, still I can not boot from
either 'I1232GB' or 'I2232GB' in Mac OS X
10.4.8!
Then I backed up the users folder from 'I2232GB'
onto 'I1232GB', booted from Mac OS 9.2.2 and used
Intech's Hard Disk Speedtools 3.6 to format
'I2232GB', afterwards initialized it with Alsoft's
Plus Maximizer Extension for a Block Size of 512
Bytes.
Installed Mac OS X 10.4 from DVD, as well as iLive
'06 and upgraded everything to the latest releases
with Software Update. All was working fine with all
the required reboots until another startup volume was
chosen: afterwards again I can no longer boot back
into Mac OS X 10.4.8 on the fresch installed
'I2232GB'!
I found several typos in above post, wherever it was 10.2.8 it should have read 10.4.8 - I'm very sorry for confusing you, this would not have made sense, but I found no way to edit the existing text therefore I modified the quote of it here.
I do not need Mac OS X 10.2.8 back, but it would be nice to boot back in Mac OS X 10.4.8 from another volume as the current one - which was working fine before with Mac OS X 10.4.7.
Many thanks,
Josef

Can not boot from OSX disc

I recently partitioned my internal drive with an 80 gig partition to run Ubuntu , removed Ubuntu and now can not resize hd to recover the 80 gig that I used , there was a program with this Ubuntu install called rEFIt that was installed for the dual boot , My problem is that Itunes keeps crashing and I have spent somewhere around 8 hours trying to fix this issue and in the process I discovered that I now can not boot from the osx disc but I can boot from the Ubuntu disc , what can I do to correct this issue or is there anything that I can do to correct this and recover the 80 gig that I used ?

The only solution was to erase hd and restore from time machine backup......
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Imac 21" mid 2011 can not boot from USB device?

Hi,
hope someone can help me.
Bought the new imac 21" and replaced the superdrive with a ssd drive.
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Currently i don't see any any to install win 7 without an internal superdrive, but can this be??
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Kwicks

Internal is definitely the easiest but you can boot from external HD or external optical drive, the mac is just very picky on what works and what doesn't.
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no Paazel...
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~Lyssa

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OK.
According to the knowledge base that model should have shipped with Tiger, 10.4.7.
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P.S. Holding down the 'C' key prompts multiple repeated "chimes" (reboots).

Donovan Brooke wrote:
Hi all,
I have to run two Mac OS's on my MacBookPro because a piece of software that I use does not support Snow Leopard.
I was really happy to find that SL allows repartitioning without having to erase any volumes! (glad I didn't have to try gparted) However, though I was successful with repartitioning, I have come to find that I can't boot from my older OSX 10.5x CD.
Is it not allowed by apple to run two different OSX OS's on one machine?
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Donovan
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The warranty entitles you to complimentary phone support for the first 90 days of ownership.
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I'm using the MSI 865PE Neo2 board and I'm having this problem. It probably has an easy solution, but this is my first build, so I'm not sure exactly what to do.
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I have a mid-2010 27" Quad Core i5 iMac running 10.8.3. Startup disk recognizes the primary hard drive as a startup volume but will not boot from it. Have tried zapping PRAM, ran disk utility. No errors reported Any thoughts?

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