MacPro5.1 boot issues

Rescued this little heavy guy from a garage and was so happy, to see Haiku Nightly running live and perfectly smooth from stick. (Including network, video, audio, bluetooth …)

But after installing on a dedicated drive i stuck always on the fourth icon, no matter which fancy save boot options i choose or not? And there are no extra cards or gadgets installed in this machine. I found no similar topics in the forum but perhaps another MacPro5.1 user can help?

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Fourth icon is the boot disk, so maybe it has some problems with the drive? I’m unsure of how to debug this, but I would probably try onscreen output if that gives any clues. In any case this would be worth a ticket

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I made a mini-tutorial about MacPro 4.1 for Haiku Beta1, long time ago:

Recipe for Beta1 with MacPro4.1(Early 2009)

I’ts outdated but I guess the step 10 refers to your problem, the solution it’s to force VESA mode reboot in Haiku.
Please read the mini-tutorial and happy hacking.

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The only solution i’ve found is to “Disable IDE DMA” at booting. That works!
Without he throws an endless loop of error messages like these:

ata 0 error: timeout waiting for interrupt
ata 0 error: RecoverLostInterrupt: lost interrupt, status 0x50
ata 0 error: timeout waiting for interrupt
ata 0 error: RecoverLostInterrupt: lost interrupt, status 0x50
ata 1 error: timeout waiting for interrupt
ata 1 error: RecoverLostInterrupt: lost interrupt, status 0x50
ata 1 error: timeout waiting for interrupt
ata 1 error: RecoverLostInterrupt: lost interrupt, status 0x50
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