Another SCSI Question,

[jholt5638]

Well the 80 pin drive I bought is not compatible. But I think I may have another option. A friend has a bunch of old 68pin SCSI stuff, in it is a IDC 50pin male to 68pin male adapter, a four device 68pin internal SCSI cable with terminator, and a 4.5GB HDD.  He was using the adapter for a old 50 pin controller so he could attach 68pin drives. could I use the same adapter on the Quadra's internal SCSI connector and use the same way. I know I could just try it but I thought I would check here first and save me the time before cracking the case open.

 

[Elfen]

You'd need a 80 to 50 scsi adaptor and it should work on the Quadra. Make sure the drive is terminated.

 

[jholt5638]

The 80pin 146GB U320 Drive and adapter I bought earlier don't seem to work drive powers up but is invisible no matter where I put it either internally or externally. the external enclosure I have has active termination on it. when I tried internally I used a pass-through terminator no matter the jumper settings TPWR on off or ID setting drive is not seen on the bus. If the drive is not terminated the drive light stays on but when terminated looks and sounds like its running right. SO I am guessing this drive doesn't have backward compatibly. So a friend was getting rid of his scsi stuff. All of it 68pin, he gave me a 68pin 4.5GB HDD, 4 device 68pin cable and a 50 female to 68 pin female adapter(he was using it to use a older 50 pin controller with 68 pin drives). I was asking if this adapter would work in the Q700 before I opened it up because its a pain to get the PSU out.

 

[Superdos]

The 80pin 146GB U320 Drive and adapter I bought earlier don't seem to work drive powers up but is invisible no matter where I put it either internally or externally. the external enclosure I have has active termination on it. when I tried internally I used a pass-through terminator no matter the jumper settings TPWR on off or ID setting drive is not seen on the bus. If the drive is not terminated the drive light stays on but when terminated looks and sounds like its running right. SO I am guessing this drive doesn't have backward compatibly. So a friend was getting rid of his scsi stuff. All of it 68pin, he gave me a 68pin 4.5GB HDD, 4 device 68pin cable and a 50 female to 68 pin female adapter(he was using it to use a older 50 pin controller with 68 pin drives). I was asking if this adapter would work in the Q700 before I opened it up because its a pain to get the PSU out.

50 to 68-pin is usually okay. Ultra160 stuff usually has a better chance of working with 50 and 68-pin stuff.

also, don't turn termination power on for a U320 drive on an older bus-- it's not the required 5v but 3.3v. you'll blow the voltage reg and the drive if not caught in time.

PSU removal issues can be solved with a bit of grease in the right spots... but not too much. at least that's how I figured it out for my Q700.

makes me want to get the old beast going again; it's in storage right now and missing a few things.

also, are you using a utility that sees non-apple disks? Adaptec SCSIProbe may be one to look into to see if it can see it, also LaCIE Silverlining which is among the best options if it needs a driver.

 

[jholt5638]

50 to 68-pin is usually okay. Ultra160 stuff usually has a better chance of working with 50 and 68-pin stuff.

also, don't turn termination power on for a U320 drive on an older bus-- it's not the required 5v but 3.3v. you'll blow the voltage reg and the drive if not caught in time.

PSU removal issues can be solved with a bit of grease in the right spots... but not too much. at least that's how I figured it out for my Q700.

makes me want to get the old beast going again; it's in storage right now and missing a few things.

also, are you using a utility that sees non-apple disks? Adaptec SCSIProbe may be one to look into to see if it can see it, also LaCIE Silverlining which is among the best options if it needs a driver.

Thanks for the information on TPWR didn't know that. I've tried scsiprobe, patched Apple SC HD Setup, heck I've even booted a m68k Linux kernel and not there. Man this SCSI stuff is PITA, makes me apreicate IDE/SATA a whole lot more.   So I am out of Ideas on the 80pin drive luckly it wasn't to much of a loss, I thought it humorous to have a Q700 with 146GB storage.

 

[Superdos]

Thanks for the information on TPWR didn't know that. I've tried scsiprobe, patched Apple SC HD Setup, heck I've even booted a m68k Linux kernel and not there. Man this SCSI stuff is PITA, makes me apreicate IDE/SATA a whole lot more.   So I am out of Ideas on the 80pin drive luckly it wasn't to much of a loss, I thought it humorous to have a Q700 with 146GB storage.

don't feel too bad yet or give up-- you merely just need a terminating adapter.

http://www.ebay.com/itm/310390365299

this one has a termination block and support for both 50 and 68-pin... I'm going to hope this works for me.

There's also another which has actual active termination soldered on the board, but it means it has to be the last device in the chain (not a problem in your situation!) but it costs a bit more and i didn't go for it.

 http://www.ebay.com/itm/111079569749

there's also a couple of people here on 68kmla that build and sell terminating adapters.

 

[jholt5638]

To be clear, I tried fwb toolkit 4.5.2 the drive is not there. Scsiprobe 5.1.2 hangs , Lacie Silverlinging pro 6.1 doesn't see the drive, apple system profiler quits with a type 3 error when probing for devices, pc exchange doesn't see the drive. I have tried the my original drive in the same enclosure and it works. Its not a termination issue I don't think when I tested the drive in the mac it was fitted with pass-through terminator and when in the enclosure it provides active termination. So I am giving up on that drive unless someone else has any ideas.

 

[Paralel]

Try Hard Disk Speed Tools. I have had it find things that nothing else can find.

 

[Elfen]

If I remember correctly, these 68 and 80 pin drive have 16 SCSI IDs  (4 pins) while the Mac only has 7 (3 pins). Make sure that the 4th pin on the ID is not used on the 68/80 pin drive; it will not be recognized by the Mac and the drive will be waiting for commands that will never come for IDs 8 - 15.

ID #7 (all first three pins jumped) is for the Mac itself, everyone else's ID is 0 - 6.