Hard disk scsi problems + more problems

[FlyingToaster]

Lately a lot of my fun mac stuff has been biting the dust (everyday). As a last resort before putting it all away, I come here for some advice..Today I had my Classic II 10MB RAM running with a used hard drive I had just acquired from ebay. The hard drive is an IBM 200MB 50 PIN SCSI. I used an external Syquest EZ 230 drive that had a system on it (7.5) and I copied the system to the hard disk after formatting it with Lido. The hard drive successfully booted to it's cloned system and I had fun playing some old games, drawing pictures, doing everything with full speed. I then used an apple cd 300 external drive to put on even more additional programs. Keep it mind, the entire time having the hard disk installed, I have had a scsi device hooked up to the back. When I was finished copying some more files from my cd, I dragged it to the trash and a few seconds later the drive itself began to make horrible banging noises followed by a smell of burning electronics. So my apple cd 300 is dead. I got back to my computer, turn it on without any scsi device attached to find that the system does not boot. I attached my Syquest drive, then the hard drive booted to the desktop.... then I get a watch arrow icon for 2 minutes. It goes away, make a new folder and the watch comes back for a few more minutes. Anything I do, watch comes back. So if anyone could be so kind as to a solution to it booting with it's own drive/ or without the hanging problem it would make my day! Hopefully something isn't internally damaged in the computer


This hard disk needs the M switched on for it to spin up I believe.

[zuiko21]

Sorry to hear that. A couple of ideas, though:

-Maybe your CD300 isn't totally dead... since the problem arose when you tried to eject the CD, those noises and smell could come from the tray's motor, but everything else could be fine. My CD300e does rattle upon powering up, ejecting and inserting a disk, but works great otherwise. You can try to open it manually with the straightened paper clip and insert a CD manually all the way, and see how it reacts -- try with the device disconnected from the computer first.

-SCSI voodoo is likely to be the cause of your other problems -- removing a device from the chain can make it go crazy. Try to revert to the same setup and cabling -- including the suspect CD300 turned off. If that works, it's just a matter of finding the proper termination/device order/cabling. Not that unusual.

Hope this helps,

[ojfd]

This sounds like termination issue. Make the picture of the underside of that IBM drive.

[FlyingToaster]

Ok so as it stands, I have jumpers on slots 1, 3, and M on the hard drive. When I have the Syquest or the terminator at the end of a scsi cable, the hard disk boots. I have tried a few other jumper settings without the scsi cable attached and it still doesn't want to boot all on it's own.

I didn't get what you mean by make the picture of the underside of the drive, take a photo of it?

[Strimkind]

To get rid of the watch issue, I would reinstall the OS and do a defrag.

A reinstall will make sure everything is fresh and minimize and errors that may have occurred from the copy.

De-fragmenting will smooth things over from all the copying you did from the CD.

Hope that helps!

[ojfd]

I didn't get what you mean by make the picture of the underside of the drive, take a photo of it?

Good guess.. Yes!

[FlyingToaster]

Ill crack it open again tonight and put more pics of it all.

[FlyingToaster]

I installed 7.6 on it after a format. Still does not boot unaided, but like I said I'll post more pics of this old HD

[FlyingToaster]

The HD has some other settings Im not sure what they do, I took a pic anyway. I hope I have provided enough information thus far for a simple solution!

Ok before I forget again, Merry Christmas everyone! and thanks for trying to help me with my scsi "voodoo" that seems like such a simple fix- I am just not an expert! I enjoy playing old games and viewing old documents from when I was a kid which this Classic II does just fine, It would just be nice to run it by itself for easier mobility.

[ojfd]

Just what I thought - your internal drive is unterminated, hence the booting problems. Those three white slots under slide covers are empty.

Unfortunately, IBM choose to use the strangest form factor terminator resistor networks, that I haven't seen before. Unless you can find the right ones, solutions to your problem could be:
1) internal pass-thru SCSI terminator that goes between internal SCSI ribbon cable connector and drive, if there is enough space behind the drive, or
2) SCSI terminator that attaches to last connector on ribbon SCSI cable, but in that case you will need new internal cable with one extra connector

See:http://68kmla.org/forums/viewtopic.php?p=163005#p163005

[FlyingToaster]

Thanks for pointing that out. So would getting the following items below be headed in the right direction?
http://www.ebay.com/itm/50pin-Internal- ... 45ff15991a
http://www.ebay.com/itm/24-50-Pin-SCSI3 ... 3f0f287607

Getting cable would also allow me to put an apple scsi cd rom at the end to use as a terminator? Of course it would not fit inside but would that work?

[ojfd]

So would getting the following items below be headed in the right direction?
http://www.ebay.com/itm/50pin-Internal- ... 45ff15991a
http://www.ebay.com/itm/24-50-Pin-SCSI3 ... 3f0f287607

Yes. It's always good to have such items around when dealing with SCSI.
That one's also good:
http://www.ebay.com/itm/24-50-Pin-SCSI3-Connector-Internal-Ribbon-Cable-Up-2-Drives-w-Terminator-/280758162233?pt=LH_DefaultDomain_0&hash=item415e7d9339

Getting cable would also allow me to put an apple scsi cd rom at the end to use
as a terminator?

Yes, if that particular Apple CD-ROM drive model has onboard termination.

[FlyingToaster]

So I ordered that cable and a working apple 4x scsi cd-rom drive (tray loading). Hopefully this will fix the termination problem and also let me get files from cds. Thanks for helping!

[FlyingToaster]

http://www.ebay.com/itm/24-50-Pin-SCSI3 ... 415e7d9339

Cable worked! Waiting for the cd drive now..