Add supplementary hard drive

[bpl213]

I have tried to add a second hard drive to a Power Mac 7500, but when added, the system disk does not boot. Using a utilities program and booting from the CD, the IDs show only the boot disk, not the supplementary drive. What do I need to do? Are there setting necessary to recognize two hard drives? Please advise. Thanks to all who respond.

 

[jimbopalmer]

without the brand and model I cannot be exact but some where there are prolly 3 jumpers. The default drive is prolly 0 and if none of the jumbers are in, so is the new drive.

the jumpers are for addresses 1 2 and 4, buy adding jumpers you can make the new drive a number from 0 to 7.

The Mac is prolly 7 and the CD is prolly 3, so 1, 2 4, 5 and 6 may be the safest numbers

SCSI Probe can show you what is selected now (assuming you are not on OSX)

http://www.versiontracker.com/moreinfo.fcgi?id=3935&db=mac

I tried to remain child-like, all I acheived was childish.

 

[macgeneral]

This is a tough one to explain properly.
The drive jumper settings need to be configured to indicate to the system that this is a "slave" drive - that is, not the master drive on which the system should seek a start up operating system.

This does depend on the model of drive though most ship with factory settings for MASTEr rather than slave. Therein your issue perhaps.

If you look at the pin end of your drive you should see a set of eight pins : : : : and there should already be a jumper in there. Long fingernails, needlenose pliers, or tweezers can GENTLTY be used to extract and reposition the jumper.

Try this one

: : : |

I believe factory is : : | :

Does this make sense to you??

Also you can go to the manufacturers web site and look under support documentation for jumper settings..

 

[jimbopalmer]

the 7500 has two SCSI controllers and no IDE controller, so unless he added a PCI IDE contoller I am not expecting Master/Slave issues, as they are only IDE issues. I tried to remain child-like, all I acheived was childish.