nadeem@wam.umd.edu (Nadeem Malik) (12/29/90)
I have a Mac II with 2MB ram, 40MB hard disk, Radius TPD, running 6.05. Everything was fine until one morning, I started up the machine to find that the Apple 40MB internal drive did not show up on the desktop. I have an Apple 160MB external which showed up so I did not notice the problem at first. I tryed disconnecting the external and restarting but then I got the flashing floppy prompt. What can I do. Is there some sort of software I can run, to bring it back to life, ping the scsi port or something of that sort. General question is what is the procedure to go through to find out what is wrong with a hard drive that will not start up. Thanks -- -------------------------------------------------------------- Nadeem Malik nadeem@wam.umd.edu Meem Technologies, Inc.
Nadeem.Malik@f20.n226.z1.FIDONET.ORG (Nadeem Malik) (12/29/90)
Reply-To: nadeem@wam.umd.edu
I have a Mac II with 2MB ram, 40MB hard disk, Radius TPD,
running 6.05. Everything was fine until one morning, I
started up the machine to find that the Apple 40MB internal
drive did not show up on the desktop. I have an Apple 160MB
external which showed up so I did not notice the problem at
first.
I tryed disconnecting the external and restarting but then I
got the flashing floppy prompt.
What can I do. Is there some sort of software I can run, to
bring it back to life, ping the scsi port or something of that
sort.
General question is what is the procedure to go through to find
out what is wrong with a hard drive that will not start up.
Thanks
--
--------------------------------------------------------------
Nadeem Malik nadeem@wam.umd.edu
Meem Technologies, Inc.
+ Organization: University of Maryland at College Park
--
Nadeem Malik - via FidoNet node 1:105/14
UUCP: ...!{uunet!glacier, ..reed.bitnet}!busker!226!20!Nadeem.Malik
INTERNET: Nadeem.Malik@f20.n226.z1.FIDONET.ORGdavid_islander_hughes@cup.portal.com (12/30/90)
First use a program like SCI Tools, or anything that will do a force mount of a scsi device; or, try using disk first aid. Hi From Saipan Dave Hughes
david.islander.hughes@f20.n226.z1.FIDONET.ORG (david islander hughes) (12/30/90)
Reply-To: david_islander_hughes@cup.portal.com
First use a program like SCI Tools, or anything that will do
a force mount of a scsi device; or, try using disk first aid.
Hi From Saipan
Dave Hughes
+ Organization: The Portal System (TM)
--
david islander hughes - via FidoNet node 1:105/14
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INTERNET: david.islander.hughes@f20.n226.z1.FIDONET.ORGtoad@athena.mit.edu (John P. Jackson) (12/30/90)
In article <1990Dec28.172406.11436@wam.umd.edu> nadeem@wam.umd.edu (Nadeem Malik) writes: > >I have a Mac II with 2MB ram, 40MB hard disk, Radius TPD, >running 6.05. Everything was fine until one morning, I >started up the machine to find that the Apple 40MB internal >drive did not show up on the desktop. I have an Apple 160MB >external which showed up so I did not notice the problem at >first. > >I tryed disconnecting the external and restarting but then I >got the flashing floppy prompt. > >What can I do. Is there some sort of software I can run, to >bring it back to life, ping the scsi port or something of that >sort. > >General question is what is the procedure to go through to find >out what is wrong with a hard drive that will not start up. > >Thanks Well, I've seen this problem and these symptoms about a billion times. If it's what I think, you might not be in bad shape. This sounds very much like you are experiencing the problem of the drive physically not spinning up when you turn the Mac's power on. There are a couple of things you can try. First, the simplest is to just keep turning the machine off and then back on again (waiting a few seconds each time), and hoping that the initial power to the drive will break it free and off you'll go. This can sometime happen in just a few tries, or a lot of tries. The next suggestions are a bit more involved. If not done considerately, you COULD damage your drive. The principle is basically this: since the disk won't spin in it's housing, you start out by making it's housing spin around it. I've done this a lot, but let me explain. The ideal way to accomplish this would be to have the drive assembley in your hand, power attached to it, and you would then, with a twisting motion of your wrist, crisply spin the assembley back and forth (like you would turn a shower knob), counting on the fact that the inertia of the disk platters contained inside would tend to keep the platters from rotating, and the case would move around the platters. relatively speaking however, this would be the same thing as spinning the platters back and forth a bit. Why would all this be necessary? Well, sometimes due to a buildup of dust, or poor design, the platter motor or the head actuator become slightly sticky, and the won't break free with normal power-on procedures. It is also relatively easy to tell if this is your problem or not by simply listening to the Mac when you turn it on, keeping all other devices off. You can hear whether or not the drive is coming up. You may have to take the cover off and put your ear close to it to be sure. Also, I've done this before without actually removing the drive from its machine either. If you can imagine someone with a Mac II or a CMS external drive in their hands, plugged in to the wall, turning on the power and simultaneously begining to rotate it back and forth, briskly, then you are picturing it just how I have done it. As far as harming your equipment goes, the idea is NOT to strike the drive or Mac against anything, for any reason. Otherwise, you may cause the read/write heads to contact the disk platter's surfaces, and that's where you start causing damage. Also, this is worth trying even if you think you hear the drive spinning, because maybe it the case of the read/write head actuator being stuck. If you succeed at getting the thing to come up, back up your data, and look into getting the problem fixed. This usually means replacing the drive, unless it's one that has a known problem and is covered by a repair program. Also, you don't necessarily have to have power to the drive to do this. It's just that this can sometimes be the nudge that you need to get going. Finally, while it's more work, the most effective way to do this is if you take the drive out of the machine. Good luck! JJ
John.P..Jackson@f20.n226.z1.FIDONET.ORG (John P. Jackson) (12/31/90)
Reply-To: toad@athena.mit.edu In article <1990Dec28.172406.11436@wam.umd.edu> nadeem@wam.umd.edu (Nadeem Malik) writes: > >I have a Mac II with 2MB ram, 40MB hard disk, Radius TPD, >running 6.05. Everything was fine until one morning, I >started up the machine to find that the Apple 40MB internal >drive did not show up on the desktop. I have an Apple 160MB >external which showed up so I did not notice the problem at >first. > >I tryed disconnecting the external and restarting but then I >got the flashing floppy prompt. > >What can I do. Is there some sort of software I can run, to >bring it back to life, ping the scsi port or something of that >sort. > >General question is what is the procedure to go through to find >out what is wrong with a hard drive that will not start up. > >Thanks Well, I've seen this problem and these symptoms about a billion times. If it's what I think, you might not be in bad shape. This sounds very much like you are experiencing the problem of the drive physically not spinning up when you turn the Mac's power on. There are a couple of things you can try. First, the simplest is to just keep turning the machine off and then back on again (waiting a few seconds each time), and hoping that the initial power to the drive will break it free and off you'll go. This can sometime happen in just a few tries, or a lot of tries. The next suggestions are a bit more involved. If not done considerately, you COULD damage your drive. The principle is basically this: since the disk won't spin in it's housing, you start out by making it's housing spin around it. I've done this a lot, but let me explain. The ideal way to accomplish this would be to have the drive assembley in your hand, power attached to it, and you would then, with a twisting motion of your wrist, crisply spin the assembley back and forth (like you would turn a shower knob), counting on the fact that the inertia of the disk platters contained inside would tend to keep the platters from rotating, and the case would move around the platters. relatively speaking however, this would be the same thing as spinning the platters back and forth a bit. Why would all this be necessary? Well, sometimes due to a buildup of dust, or poor design, the platter motor or the head actuator become slightly sticky, and the won't break free with normal power-on procedures. It is also relatively easy to tell if this is your problem or not by simply listening to the Mac when you turn it on, keeping all other devices off. You can hear whether or not the drive is coming up. You may have to take the cover off and put your ear close to it to be sure. Also, I've done this before without actually removing the drive from its machine either. If you can imagine someone with a Mac II or a CMS external drive in their hands, plugged in to the wall, turning on the power and simultaneously begining to rotate it back and forth, briskly, then you are picturing it just how I have done it. As far as harming your equipment goes, the idea is NOT to strike the drive or Mac against anything, for any reason. Otherwise, you may cause the read/write heads to contact the disk platter's surfaces, and that's where you start causing damage. Also, this is worth trying even if you think you hear the drive spinning, because maybe it the case of the read/write head actuator being stuck. If you succeed at getting the thing to come up, back up your data, and look into getting the problem fixed. This usually means replacing the drive, unless it's one that has a known problem and is covered by a repair program. Also, you don't necessarily have to have power to the drive to do this. It's just that this can sometimes be the nudge that you need to get going. Finally, while it's more work, the most effective way to do this is if you take the drive out of the machine. Good luck! JJ + Organization: Massachusetts Institute of Technology -- John P. Jackson - via FidoNet node 1:105/14 UUCP: ...!{uunet!glacier, ..reed.bitnet}!busker!226!20!John.P..Jackson INTERNET: John.P..Jackson@f20.n226.z1.FIDONET.ORG