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You are here: MacNN Forums > Hardware - Troubleshooting and Discussion > Mac Desktops > G5 won't read 250Gb sata drive

G5 won't read 250Gb sata drive
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andres_montes
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Mar 23, 2006, 04:26 PM
 
HELP... I have fitted a Maxtor 250GB sata drive to my G5 and it wont read it at all. I sent it back and got a replacement AND it wont see that one either. It runs an 80GB dribve fine. Anyone out there got any ideas?
Ian
     
olePigeon
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Mar 23, 2006, 06:44 PM
 
What do you mean by it can't see it? Have you used the Disk Utility in your Utilities folder and formatted the HDD?
"…I contend that we are both atheists. I just believe in one fewer god than
you do. When you understand why you dismiss all the other possible gods,
you will understand why I dismiss yours." - Stephen F. Roberts
     
mountainash
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Mar 26, 2006, 08:33 AM
 
The first thing to do is check that the cables are all connected properly. There should be a power cable and data cable. Check that the data cable is connected to the motherboard properly.

You could try connecting the 250Gb drive to the cables where you have the 80Gb drive (since you know that there isn't a problem with the 80Gb). Just take the 80Gb out and put the 250Gb in its place.

Then you need to check in Disk Utility. You can get to Disk utility from Applications/Utilities in OSX. Or you can boot from the OSX install disk and select disk utility from the pull down menu.

If the drive shows up here, you should be able to format it, without problems.

Hope this helps. If not, give us some more details
Power Mac G4 Digital Audio 533MHz 1.5GiB RAM, 2x 80Gb ATA HDDs, 320Gb SATA HDD, Radeon 9650 256MiB, Airport Extreme compatible PCI card, Zip 250, Pioneer 110, Firewire DVD burner, 21" CRT, Harmon Kardon Apple Pro Speakers, OS X 10.4.6
Powerbook Pismo G3 400MHz, 768MiB RAM, 80Gb HDD, AirPort Extreme PC Card, Bluetooth 1.1, DVD-ROM, OS X 10.4.6, Ubuntu 5.10, MacOS 9.2.2
To buy: RAM for Pismo, CPU upgrades
     
mountainash
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Mar 26, 2006, 01:56 PM
 
I read elsewhere in this forum that some Seagate drives 250Gb and larger have problems on Macs. It can be fixed by putting the drive in a PC and changing a setting. But I can't find the link now. Perhaps a search on SATA Seagate G5 and 250Gb would help?
Power Mac G4 Digital Audio 533MHz 1.5GiB RAM, 2x 80Gb ATA HDDs, 320Gb SATA HDD, Radeon 9650 256MiB, Airport Extreme compatible PCI card, Zip 250, Pioneer 110, Firewire DVD burner, 21" CRT, Harmon Kardon Apple Pro Speakers, OS X 10.4.6
Powerbook Pismo G3 400MHz, 768MiB RAM, 80Gb HDD, AirPort Extreme PC Card, Bluetooth 1.1, DVD-ROM, OS X 10.4.6, Ubuntu 5.10, MacOS 9.2.2
To buy: RAM for Pismo, CPU upgrades
     
Todd Madson
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Mar 26, 2006, 02:03 PM
 
Read this article about Spread Spectrum Clocking:
http://www.xlr8yourmac.com/feedback/...5problems.html
     
mountainash
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Mar 26, 2006, 02:16 PM
 
The problem mentioned elsewhere is high-capacity Seagate drives with SSC enabled. Most Seagate drives don't have SSC enabled by default, but a few do. The SATA controller on board the G5 can't handle these disks.

The solution is to put them in a PC and use a utlitilty to disable SSC.
Power Mac G4 Digital Audio 533MHz 1.5GiB RAM, 2x 80Gb ATA HDDs, 320Gb SATA HDD, Radeon 9650 256MiB, Airport Extreme compatible PCI card, Zip 250, Pioneer 110, Firewire DVD burner, 21" CRT, Harmon Kardon Apple Pro Speakers, OS X 10.4.6
Powerbook Pismo G3 400MHz, 768MiB RAM, 80Gb HDD, AirPort Extreme PC Card, Bluetooth 1.1, DVD-ROM, OS X 10.4.6, Ubuntu 5.10, MacOS 9.2.2
To buy: RAM for Pismo, CPU upgrades
     
   
 
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