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Master/Slave HD jumper settings important?
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Fresh-Faced Recruit
Join Date: Mar 2001
Location: Layer Two
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G4 Sawtooth, 10.2.8
I have just used CCC to create a boot drive on a new(er) HD than came with my system. All is well, but in checking things out, I noted that the old drive is set to "Master" on the bus and the boot drive (now) is set to "Slave". Will I take a performance hit by continuing with the settings this way? I will likely use the older drive for misc storage, so it will continue to be on the bus...if I don't have to mess with jumpers, all the better :-)
thanks for any opinions/ideas.
sailor
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Administrator
Join Date: Jun 2000
Location: California
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Macs don't care if the boot drive is Master or Slave. There is no performance hit.
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Forum Regular
Join Date: Jan 2001
Location: NYC
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There is one tiny little hitch involved here, which most people will not ever encounter but I ran up against it recently.
I had put a new bigger hard drive in my aging G4/400 in addition to its undersized-by-modern-standards 10 gig drive. The system and all important files went on the new drive, which was the slave.
Recently I got a new G5, and wanted to get some things off the old computer, so I hooked it up via Firewire to the G5 and booted it in Firewire Target Mode (for those not in the know, you do this by starting up while holding the T key and it allows you to mount the target computer's drive on the host computer).
Unfortunately, this apparently only mounts the master drive, not the slave, so I was out of luck there.
So. Probably not a particularly common scenario, but maybe worth a thought if you think you may someday need to use Firewire Target Mode--which is a pretty nifty technology if you ask me.
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Fresh-Faced Recruit
Join Date: Mar 2001
Location: Layer Two
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thanks....that's the answer I wanted to hear. :-) And, a good tip for FW users.
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Professional Poster
Join Date: Apr 2001
Location: Asheville, NC
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I have no idea where the line was drawn, but on the newer machines, all connected devices are mounted in target disk mode. I know this works on G5s and at least some eMacs. I'm not sure when it was added.
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ACSA 10.4/10.3, ACTC 10.3, ACHDS 10.3
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