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sheich0608

macrumors newbie
Original poster
Mar 15, 2019
25
12
Hi again,

Trying to flash Tiger to a USB drive, but Disk Utility keeps erroring out. I've done this process a lot with Mojave, so wondering if Catalina's deprecation of 32 bit libraries has someone rendered it impossible to flash a 32 bit image to an external drive. Has anyone else encountered this?

sheich0608
 

RogerWilco6502

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Jan 12, 2019
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I don't think that would be the case, but idk for sure. DU is honestly a mystery to me and I don't like dealing with it when I don't have to. What error(s) does it give?

(btw, the new DU is just bad in general. I'd recomemend retrying with a machine running Yosemite or older if at all possible)
 

sheich0608

macrumors newbie
Original poster
Mar 15, 2019
25
12
I don't think that would be the case, but idk for sure. DU is honestly a mystery to me and I don't like dealing with it when I don't have to. What error(s) does it give?

(btw, the new DU is just bad in general. I'd recomemend retrying with a machine running Yosemite or older if at all possible)
Ugh i know the new one is terrible. Sadly my machine is too new to boot into Yosemite. The errors I get are posted below. This same DMG worked under Mojave, which is why I ask. I've also tried mounting the Tiger image and restore it that way, and also an error.
 

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RogerWilco6502

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Ugh i know the new one is terrible. Sadly my machine is too new to boot into Yosemite. The errors I get are posted below. This same DMG worked under Mojave, which is why I ask. I've also tried mounting the Tiger image and restore it that way, and also an error.
That's really strange... For DMGs I try to avoid DU all together and use SuperDuper instead, which can clone DMGs to disks IIRC (unless it's the other way around). Here's a link to the SD site if you want to try it out:
 

sheich0608

macrumors newbie
Original poster
Mar 15, 2019
25
12
Try your luck with Etcher.

Tried that earlier, thinking it would be better. It will flash it, but complains about it not containing a partition table to make it bootable. PB G4 doesn't see it in Open Firmware. Also tried Carbon Copy, still doesn't see it. That's why I suspect it has to do with a Catalina change, since it worked great in Mojave.
 

Amethyst1

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Oct 28, 2015
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You could try using dd in Terminal - looking at your DU screenshot, your USB flash drive is /dev/disk2 but please make sure that is correct before running this, since it will delete everything on the drive, no questions asked:

sudo diskutil unmountDisk /dev/disk2
sudo dd if=/path/to/your/tiger.dmg of=/dev/disk2 bs=8192k
 

Weaselboy

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Jan 23, 2005
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Tried that earlier, thinking it would be better. It will flash it, but complains about it not containing a partition table to make it bootable.
Are you sure it is formatted HFS+ with a GUID partition table? Sounds like maybe you have it in MBR.
 

sheich0608

macrumors newbie
Original poster
Mar 15, 2019
25
12
You could try using dd in Terminal - looking at your DU screenshot, your USB flash drive is /dev/disk2 but please make sure that is correct before running this, since it will delete everything on the drive, no questions asked:

sudo diskutil unmountDisk /dev/disk2
sudo dd if=/path/to/your/tiger.dmg of=/dev/disk2 bs=8192k
Trying this now, though my past attempts at using Terminal "worked" but the flashed drive isn't recognized by either the PB or my MBP.
[automerge]1583261677[/automerge]
Are you sure it is formatted HFS+ with a GUID partition table? Sounds like maybe you have it in MBR.
It is HFS+, but it shouldn't be GUID because PPC Macs can't boot from that. I have it set to Apple Partition Map in Disk Utility.
 

Amethyst1

macrumors G3
Oct 28, 2015
9,350
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Trying this now, though my past attempts at using Terminal "worked" but the flashed drive isn't recognized by either the PB or my MBP.
[automerge]1583261677[/automerge]

It is HFS+, but it shouldn't be GUID because PPC Macs can't boot from that. I have it said to Apple Partition Map in Disk Utility.

This does a block-by-block copy of the image to the flash drive, erasing any former partitioning. This is what I use for copying Linux ISOs to flash drives (for OS X, I use Snow Leopard's DU). So if the image itself is bootable, so should the resulting flash drive. PPC Macs sometimes need a little hand-holding to boot from USB tho.
 

RogerWilco6502

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I downloaded and installed, but it keeps crashing before I can flash anything...
That's strange. At what point exactly does it crash?

You could try using dd in Terminal - looking at your DU screenshot, your USB flash drive is /dev/disk2 but please make sure that is correct before running this, since it will delete everything on the drive, no questions asked:

sudo diskutil unmountDisk /dev/disk2
sudo dd if=/path/to/your/tiger.dmg of=/dev/disk2 bs=8192k
dd is probably your best bet at this point. I use it a lot for this sort of thing as well.
 

sheich0608

macrumors newbie
Original poster
Mar 15, 2019
25
12
That's strange. At what point exactly does it crash?


dd is probably your best bet at this point. I use it a lot for this sort of thing as well.


It crashes when I open it after having saved a previous session and reopened. I think it doesn't like that I renamed my flash drive, so I'll try it with the old name if dd doesn't work.
This does a block-by-block copy of the image to the flash drive, erasing any former partitioning. This is what I use for copying Linux ISOs to flash drives (for OS X, I use Snow Leopard's DU). So if the image itself is bootable, so should the resulting flash drive. PPC Macs sometimes need a little hand-holding to boot from USB tho.

Yes, it's so strange because I was doing this same process all the time last year with few hiccups. And these are the same dmg/iso files...
 
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sheich0608

macrumors newbie
Original poster
Mar 15, 2019
25
12
@OP - Did you succeed?
Not from Catalina’s disk utility. Was able to do it with a friends MacBook Air running High Sierra, so this confirms that it’s a Catalina issue. Was also able to use SuperDuper! finally on Catalina, so at least that works.

However, I could not get the PB to detect the drive in Open Firmware using any of the above solutions; USB port may be dirty. Trying to find someone around me who either has a install DVD copy or someone who can burn the image for me. I’m in the UK studying abroad, so I don’t have my DVD copy of Tiger or access to a DVD drive.
 
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RogerWilco6502

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Not from Catalina’s disk utility. Was able to do it with a friends MacBook Air running High Sierra, so this confirms that it’s a Catalina issue. Was also able to use SuperDuper! finally on Catalina, so at least that works.

However, I could not get the PB to detect the drive in Open Firmware using any of the above solutions; USB port may be dirty. Trying to find someone around me who either has a install DVD copy or someone who can burn the image for me. I’m in the UK studying abroad, so I don’t have my DVD copy of Tiger or access to a DVD drive.
Odd about the Catalina issue. What are you trying to run the USB drive on?
 
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