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SE30 thinks there is an external drive attached
Posted by: mori512k on 2015-05-01 14:02:48 Got an SE30 going, however, it continually give a dialog box stating the disk is unrecognized and asks to reject or initialize. The icon shows an external disk drive in the warning box, but there is no external disk drive connected. Is this a hardware or software problem? System 7.1 installed on a scsi2sd card which seems to be working ok.
Posted by: Macdrone on 2015-05-01 14:41:04 I would guess the floppy drive is stuck in and it does not move or something to that effect.
Posted by: unity on 2015-05-01 14:45:29 If it thought it was the floppy, it would show a floppy icon. Do you not have a floppy you can boot from?
Posted by: mori512k on 2015-05-01 15:25:05 The internal floppy is working ok. The warning box shows a Mac with an external floppy drive next to it with the warning. Should have clarified that
Posted by: Macdrone on 2015-05-01 15:46:45 caps? corrosion on motherboard?
Posted by: Macdrone on 2015-05-01 15:46:57 battery explosion?
Posted by: mori512k on 2015-05-01 15:51:43 Caps have been replaced (not by me) no battery it was removed and there was no corrosion. Is the searching for the external floppy part of the rom, software, or other hardware? For some reason it is detecting an external floppy drive that isn't there
Posted by: CC_333 on 2015-05-01 16:13:32 Maybe it's a faulty Bourns filter? That seems to be a common cause of bizarre floppy-related problems like this. c
Posted by: mori512k on 2015-05-01 16:27:38 I've had read/write problems with bourns in the past, but not this. Uniserver or technight would be the experts on that.
Posted by: uniserver on 2015-05-01 17:27:09 cc-333 is correct the problem is the bourns filter has gone bad. its a common problem. they go bad in a few different ways, causing oddness. i change those... but usually i suggest that if you change one, you should change all 3. if one is starting to go bad, its probably going to start happening to the other ones as well causing other strange oddness. (6) If solution (5) doesn't work either, replace the network filter RP2 (Bourns 4120R-601-250/201). Also see 9. Bright Monitor with neither Arrow Pointer nor Startup http://www.biwa.ne.jp/~shamada/fullmac/repairEng.html these filters do go bad on many other mac's as well.
Posted by: mori512k on 2015-05-01 17:52:44 Ok. I'll change them if I have any. If not, I'll PM you. Been looking for spares, but seems like 30 is minimum order.
Posted by: mori512k on 2015-05-01 18:25:50 Found a couple you sent me a while back, uni. I'll update
Posted by: Elfen on 2015-05-01 19:33:21 Its a little late for me to post, but I agree with CCC's and Uniserver's findings.
Posted by: bigmessowires on 2015-05-02 07:57:30 Could you take a photo? I don't think I've ever seen an "external disk drive icon". What happens if you boot an earlier system from the internal floppy, like System 6?
Posted by: uniserver on 2015-05-02 08:22:13 i have. when those filters go bad they can cause any of the above.
Posted by: uniserver on 2015-05-02 08:22:31 but my all means pictures are nice 🙂
Posted by: Elfen on 2015-05-02 10:49:49 Could you take a photo? I don't think I've ever seen an "external disk drive icon". What happens if you boot an earlier system from the internal floppy, like System 6? That depends on the system it is on - if is on a Classic 9in B/W Mac, the icon I seen is the Mac icon with a little external drive next to it with an arrow pointing down the external drive. On the Mac IIcx/ci, I seen the Mac IIcx/ci with an external drive next to it with the arrow pointing down to the external drive. This I seen on both System 6 & 7.
Posted by: mori512k on 2015-05-08 10:45:10 Sorry Indidnt take a photo, but Rlfen described it correctly. I can't take a photo now, because the problem has been fixed. Thanks to C and uniserver, Bourne filters have been replaced and the problem is gone!
Posted by: mori512k on 2015-05-08 10:46:53 BMOW, I don't recall if it happened when I booted from the floppy. It did happen when booted from an external drive though.
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