dual boot tiger and leopard on imac

[jefj001]

How do i install a dual boot with tiger on the internal Hard disk and leopard on the external usb/firewire hard dsik

 

[kisuke3]

make an image of a leopard CD and copy it onto the external HD or just plainly install leopard OS onto the external HD. Boot from the leopard cd and choose the external HD as the destination drive.

 

[ElDiabloConCaca]

Like kisuke3 said, just install Leopard on the external hard drive (boot from the install CD/DVD, choose the external as the destination, install).

Then, use the "Startup Disk" pane of the System Preferences to manage which disk you want to start up from, and reboot into the new system.

Be aware that older PowerPC-based Macs (PowerMac G4, iMac G5, etc.) cannot boot from USB (only FireWire).