10.5.8 can be install via USB Stick?

Discussion in 'PowerPC Macs' started by lhoffstadt, Sep 30, 2015.

  1. lhoffstadt macrumors member

    lhoffstadt

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    #1
    Hi all, I was wondering if I can do a clean install of Leopard 10.5.8 on a Mac G5 1.6GHZ from a USB stick.
    I don´t have the original disk for the OS, so my only option was to download the ISO file from the OS and I was wondering if this is possible to do.

    Thanks for any recommendation you can provide.
     
  2. MacCubed macrumors 68000

    MacCubed

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    #2
    Sadly, the boot ROM on the pre 2005 G5 systems don't allow booting from USB, however, you could create a separate partition on the HDD and restoring the ISO to the partition using DU
     
  3. jbarley macrumors 68030

    jbarley

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    #3
    Just where can you download a legal copy of OS X10.5.8?
     
  4. bse5150 macrumors 6502

    bse5150

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    #4
    He didn't say that he downloaded a legal copy.;)
     
  5. lhoffstadt thread starter macrumors member

    lhoffstadt

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  6. Intell macrumors P6

    Intell

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    #6
    All USB 1.1 and 2.0 PowerPC Macs support booting from a USB device. You can clone a optical disc's contents to a properly formatted USB drive, boot from it, and install OS X without a problem.
     
  7. ApolloBoy macrumors 6502a

    ApolloBoy

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    #7
    Never worked on either my 12" PB or G4 mini.
     
  8. jbarley macrumors 68030

    jbarley

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    #8
    Then I believe this forum has a policy in regards enabling piracy
     
  9. MacCubed macrumors 68000

    MacCubed

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  10. lhoffstadt thread starter macrumors member

    lhoffstadt

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  11. MacCubed macrumors 68000

    MacCubed

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  12. Intell macrumors P6

    Intell

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    #12
    Some PowerPC Macs you need to use OpenFirmware commands. Others, just boot normally as you would a FireWire or internal drive.
     
  13. bunnspecial macrumors 603

    bunnspecial

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    #13
    I thought the B&W as well as tray load iMacs couldn't, although admittedly I haven't tried.
     
  14. Intell macrumors P6

    Intell

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    #14
    The B&W and tray loading iMacs are USB 1.0, not 1.1.
     
  15. garirry macrumors 68000

    garirry

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    #15
    No no, I can confirm that the lowest Mac I've tried booting from an USB is an iMac G4 USB 2.0. If I'm correct, I'm fairly certain that even every New-World ROM Mac with USB can boot from it, but I may be wrong. I need to try on my iBook G3 Clamshell once I fix it.
     
  16. MultiFinder17 macrumors 68000

    MultiFinder17

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    #16
    I have booted my Power Mac G4/500DP (Gigabit Ethernet) via USB.
     
  17. bunnspecial macrumors 603

    bunnspecial

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    #17
    Thanks. Are these the only exceptions to USB booting?
     
  18. Intell macrumors P6

    Intell

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    #18
    Some of the Powerbook G3, Yikes! G4, and earlier clamshell iBooks cannot USB boot, as well as most non-built in USB ports.
     
  19. bunnspecial macrumors 603

    bunnspecial

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    #19
    Thanks.

    The Yikes! makes sense since it's basically a B&W with a G4.

    Do you know what the cut-off is on the portables? I would guess that pre-FW Clamshells and the Lombard would not USB boot while the Pismo and FW Clamshell would, but don't know. I have a Lombard, but my only Clamshell is a FW model, so can't double check.
     
  20. Intell macrumors P6

    Intell

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    #20
    Apple states that all machines introduced after the Sawtooth and slot loading iMac are capable of USB booting. That roughly translates to all Macs introduced since September/October of 1999. The non-FireWire clamshell was introduced in July of 1999 and not capable of USB booting. The Pismo was introduced in 2000 and is, while the Lombard was introduced in May of 1999 and is not.
     
  21. LightBulbFun macrumors 6502a

    LightBulbFun

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    #21
    from what I cal tell any Mac with the Uninorth architecture is capable of booting from USB/FW the older USB macs are Gossmer based witch doesn't seem to be bootable on USB (or FW for the B&W/Yikes but you can use xpostfacto to do that)
     

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