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29160 Ultra SCSI PC works in X System
I got ahold of an Adaptec 29160 SCSI card out of a retired WinNT server and decided to give it a try in my G4 500. I attached an 18 GB 10000 RPM ultra SCSI HD to it and booted into OS 10.1.5 to see what I could see. Without any drivers, the drive showed up, I reformatted it, and now I'm going to clone my OS X installation onto it and test the performance.

Read/write performance to the drive is extremely fast so far. I don't know what the price difference is between the card for Mac and PC, but normally the difference is significant.

I tested to see if the card was available in OS 9.2.2, but it does not show up. It looks like I'll have to attach the drive to my 2940 card to clone the OS X partition to the drive and then change it over to the 29160 card to boot into the newly created copy.

I tried to copy my OS X partition to the SCSI HD in OS 10.1.5 with Carbon Copy Cloner 1.2, but it returns an error "unable to copy Applications, command not found" or something of that nature.
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Iomega Buz SCSI 2 card works too!
Authored by: acalado on Jul 11, '02 09:54:37AM

I picked up an Iomega Buzz PCI SCSI-2 and Video capture card at clearance a year and half ago. While there is no support or drivers for the video in/out features of this card (the Buz box), the card does function fine without drivers as a SCSI adapter in my G4/400 under Mac OS X.

I have since decided to become legacy free, so if anyone wants this beast (complete with all cables, box, CDROM and documents), make me an offer at

I suspect there are a lot of PCI SCSI controllers that are compatible with Mac OS X without drivers. Wouldn't it be nice if there were a complete list of compatible hardware posted on Apple's web site? I had a hell of a time finding a 10/100Base-T Nic for my old 7600 that was compatible with Mac OS X. Found an old Intel chipset card that I never expected to work, but it did after I had no luck with cards from SMC, 3Com and even my Asante card that is Mac OS 9 compatible. Asante said they have no plans to update the drivers for OS X so I will never buy another Asante product. Do you blame me?


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Adaptec 29160N SCSI X
Authored by: Daniel Settles on Jul 11, '02 11:50:51AM

I have an Adaptec 29160N Ultra SCSI card. It works just fine in Mac OS 9 and in Mac OS X.
In OS X, it works well with an internal 9 gig Quantum LVD HD, and with external Jaz and Zip drivers. In OS 9, in works fine with a UMAX PowerLook II scanner. HOWEVER, the scanner will not work in OS X with the 29160N card. I suspect because the card may be too fast for the scanner in X. I now have a 2nd SCSI card, an older Orange Micro Grappler which is working just fine in OS X with the UMAX scanner and SilverFast software via Photoshop 7 for X.
NOTE: The Adaptec driver installer for OS X may report that it has successfully updated the Adaptec SCSI drivers in X. This may not be true. Always use the Uninstaller to remove the old Adaptec driver before running the installer to place a newer SCSI driver on the computer.

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Adaptec 29160N SCSI X
Authored by: saltydog4791 on Jul 12, '02 08:57:38PM

Hello All,

Maybe this is a stupid question but does this mean I can use a 2940U2W that I have from a Dell Server? It seems to me that if the 29160 works, this one maybe can as well. Do I risk any harm by giving it a go?


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Adaptec 29160N SCSI X
Authored by: stevec on Jul 14, '02 12:54:08PM

I had an old PII system laying around with an Adaptec 2690UW card in it, what the heck. It took a lot longer to boot the first time, on the order of 10 minutes, AND it booted from a different volume but I reset that and booted into my normal OSX boot volume. Apple System profiler gives the following:

Not available
Card type: Not available
Card name: pci9004,7881
Card model: Not available
Card ROM #: Not available
Card revision: 1
Card vendor ID: 9004
Ethernet address: <not applicable>

But the card vendor is the same as the BTO card I got with this B&W G3, so I hooked up a drive and it seems to work fine. I haven't done a lot of testing on this card but if the other posts are any indication it looks like a lot of "PC Only" Adaptec SCSI cards may indeed work fine under OSX. It would be nice to see if anyone has access to other make and model cards what their results are.

very cool!

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orange micro grappler
Authored by: beef on Jul 14, '02 09:47:33AM

I have an orange micro grappler scsi card... the card is recognized, but the drive attached to it isn't...

well... I got the thing years ago for SCSI CD-R...and the HD is some old Quantum...I can't say I've kept them in great condition either... so maybe it's my fault the drive's not working... I'm not sure...

does anyone have SCSI drives working with Orange Micro's SCSI PCI card?

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29160 in OS 9
Authored by: BrianT on Jul 16, '02 01:19:53PM

I had the same problem on seeing my drive in OS 9, I did some research and found out that the cable was causing the problem. I had a cable with one connection and found out on some macs you need one with at least two connectors,after buyig the cable the disk showed up in OS9.

Then came the boot problem (would not work as startup drive) with Quicksilver machines, I have the 867. With more research on the Adaptec website I found that you need to :

1) Reboot, holding down command-option-O-F all at the same time at startup. You will see a white screen starting with "Open Firmware" and ending with a "0 >" prompt.
2 When the Open Firmware prompt appears, type the following (Note that the spaces between quotes are important and the instructions are case sensitive. (The ß character = a space. Wherever the ß character appears in the lines listed below, type a space in it's place.) After pressing return , the Mac should display an "OK" response and another "0 >" prompt.)
3) At the "0 >" prompt type the following and then press the return key
4) Verify the following line exists in the output, generally 4 to 6 lines down
fcode-debug? true false
5) At the "0 >" prompt type the following and then press the return key
7) Once the system is up select the drive (using Startup Disk in the Control Panels folder under Mac OS 9 or in Startup Disk in System Preferences under Mac OS X) you wish to boot off of and reboot.

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