rEFInd / Discussion / General Discussion: Using a 64 bit Linux system to install rEFInd on a USB ESP partition destined for booting on a 32 bit iMac

Ivan Avery Frey - 2020-05-29

Is it possible to do what I've mentioned in the topic title? The iMac is a 64 bit machine with a 32 bit EFI.

Ivan.

Last edit: Ivan Avery Frey 2020-05-29

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George Wren - 2020-05-31

Hi. I'm new to mac (just inhreated a 2009 imac) and relatively new to Linux but I'm lookig to possibly do something possibly fairly similiar, however rEFInd on the mac booting to a Linux efi external usb drive (or possibly even a BIOS ext. usb drive).

I'm not sure about why you'd use 32 bit efi, why not 64 bit for everything? In any case you might want to take a look here: https://forums.linuxmint.com/viewtopic.php?f=42&t=287353. In this aticle the guy covers a method of installing rEFInd on a usb drive which might help you.

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- Ivan Avery Frey - 2020-05-31
  
  Hi George, I can't change the bitness of my EFI. My iMac5,1 is an early
  macintel that had a 64 bit processor and a 32 bit EFI. In fact it was
  released in Sept. 2006.
  
  On Sun., May 31, 2020, 08:06 George Wren, grwren@users.sourceforge.net
  wrote:
  
  Hi. I'm new to mac (just inhreated a 2009 imac) and relatively new to
  Linux but I'm lookig to possibly do something possibly fairly similiar,
  however rEFInd on the mac booting to a Linux efi external usb drive (or
  possibly even a BIOS ext. usb drive).
  
  I'm not sure about why you'd use 32 bit efi, why not 64 bit for
  everything? In any case you might want to take a look here:
  https://forums.linuxmint.com/viewtopic.php?f=42&t=287353. In this aticle
  the guy covers a method of installing rEFInd on a usb drive which might
  help you.
  
  Using a 64 bit Linux system to install rEFInd on a USB ESP partition
  destined for booting on a 32 bit iMac
  https://sourceforge.net/p/refind/discussion/general/thread/ee0e72b4f3/?limit=25#07f7
  
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George Wren - 2020-06-02

Got it, guess I should have asked first before assuming it could just do 64 bit. In any case if you haven't already you might want to scout around the Linux formu, might be worth your time. I've been able to get some fairly decent help there for things related to Linux, Windows, MAC & rEFInd. Good luck.

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Using a 64 bit Linux system to install rEFInd on a USB ESP partition...

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Using a 64 bit Linux system to install rEFInd on a USB ESP partition destined for booting on a 32 bit iMac

Using a 64 bit Linux system to install rEFInd on a USB ESP partition...

An EFI boot manager utility

Forums

Help

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Using a 64 bit Linux system to install rEFInd on a USB ESP partition destined for booting on a 32 bit iMac