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    How to set up a bootable RAM disk on a Quadra with no SCSI devices?

    I've got a Quadra 840av with broken SCSI bus - neither internal nor external SCSI devices can mount properly. I want to install a NUBUS Jackhammer SCSI card that I hope to use for connecting drives. If I understand correctly, in order to configure the Quadra so that it can boot from an HD...
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    Can connecting an external SCSI hard drive damage the internal one?

    I had my Color Classic up and running fine for several weeks now, never a problem booting from the internal HD. Yesterday I hooked up an external known-good HD to the rear SCSI port and was able to boot the Mac and see/access both drives on the System 7.1 desktop. Great! But once I powered down...
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    Can a Nubus SCSI card serve as the sole SCSI bus in a Quadra?

    I believe the built-in SCSI buses (both internal and external) of my Quadra 840av are not working. Someone suggested that I could install a Nubus SCSI card (such as ATTO or FWB Jackhammer) as an alternative. That sure sounds attractive! But will HDs hooked up through one of these cards be seen...
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    Quadra 840v doesn't see any SCSI devices

    Hi all,  I'm trying to restore a Quadra 840av and am having SCSI issues. My fear is that the SCSI controller on the motherboard is fried and this computer cannot recognize any SCSI devices hooked to it internally or externally. Here's the situation: On power up, it chimes but the screen...
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