Blinking ? on disk

2001-08-18 Thread Jim Raper

Hello, y'all,

Early season question for the list. I'm the person with the Mac lab of
LCII's, 575's, and 580's. When the teacher whose room houses the lab
went in a few days prior to the opening of school, she and a student
turned a few (6-8) of the Macs on. All came up with the disk icon with
the blinking ?. All but one that is. The lone LCII came up fine. I have
7.5.5 on all.

I have not gone in to do anything about this yet. Just wondered if
anyone wants to suggest anything to look for when I do start trying my
magic.

She did power down and reboot a couple of machines but the blinking disk
? icon came up again.
If I remember correctly, that icon means Can't find a usable system
disk.

I have access to Norton Utilities.

The lab was running quite well with just a few printing problems when we
shut down in the spring for end-of-school.

Jim


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Re: Blinking ? on disk

2001-08-18 Thread Marten van de Kraats

This sounds like someone formatting the whole lot of them to get even 
with the teacher...
Try starting up from floppy (disk tools disk) and see wether there is 
still a system folder with all the goodies inside (or else wether the 
whole thing is just erased).

Hello, y'all,

Early season question for the list. I'm the person with the Mac lab of
LCII's, 575's, and 580's. When the teacher whose room houses the lab
went in a few days prior to the opening of school, she and a student
turned a few (6-8) of the Macs on. All came up with the disk icon with
the blinking ?. All but one that is. The lone LCII came up fine. I have
7.5.5 on all.

I have not gone in to do anything about this yet. Just wondered if
anyone wants to suggest anything to look for when I do start trying my
magic.

She did power down and reboot a couple of machines but the blinking disk
? icon came up again.
If I remember correctly, that icon means Can't find a usable system
disk.

I have access to Norton Utilities.

The lab was running quite well with just a few printing problems when we
shut down in the spring for end-of-school.

Jim

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Re: Blinking ? on disk

2001-08-18 Thread the pickle

At 19:03 -0500 on 18/08/01, Jim Raper wrote:

Hello, y'all,

Early season question for the list. I'm the person with the Mac lab of
LCII's, 575's, and 580's. When the teacher whose room houses the lab
went in a few days prior to the opening of school, she and a student
turned a few (6-8) of the Macs on. All came up with the disk icon with
the blinking ?. All but one that is. The lone LCII came up fine. I have
7.5.5 on all.

Check the PRAM batteries; if the PRAM battery dies, the Startup Disk
control panel setting will be erased and the Mac can forget what its
System disk is.

Try holding cmd-opt-shift-delete to see if that can get them to recognise
the HD as the startup disk, assuming nothing happened to corrupt the drive.

p
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Re: Blinking ? on disk

2001-08-18 Thread jpero

 Hello, y'all,
 
 Early season question for the list. I'm the person with the Mac lab of
 LCII's, 575's, and 580's. When the teacher whose room houses the lab
 went in a few days prior to the opening of school, she and a student
 turned a few (6-8) of the Macs on. All came up with the disk icon with
 the blinking ?. All but one that is. The lone LCII came up fine. I have
 7.5.5 on all.
 
 I have not gone in to do anything about this yet. Just wondered if
 anyone wants to suggest anything to look for when I do start trying my
 magic.

Did those HD hum and make seeking noises when turned on?  If not,  
slap hard on sides of the Macs few times asap when turned on.  If 
that trick did work and hear HD spin up and make seeks and boots 
fine, replace HDs.  That's signs of dying HD and sticking heads to 
the platters is also worn HD.  This is caused by poor cooling on 
those HD especially those that runs hot.

Cheers,

Wizard

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Re: Blinking ? on disk

2001-08-18 Thread Alex Allee

on 8/18/01 1:19 PM, [EMAIL PROTECTED] at [EMAIL PROTECTED] wrote:

 Did those HD hum and make seeking noises when turned on?  If not,
 slap hard on sides of the Macs few times asap when turned on.  If
 that trick did work and hear HD spin up and make seeks and boots
 fine, replace HDs.  That's signs of dying HD and sticking heads to
 the platters is also worn HD.  This is caused by poor cooling on
 those HD especially those that runs hot.

Sounds like good advice, but this should be a last resort. Check everything
software wise and all the connections before you resort to beating your
Macs. :)

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Re: Blinking ? on disk

2001-08-18 Thread William Ahearn


--- Jim Raper [EMAIL PROTECTED] wrote:
 Hello, y'all,
 
 Early season question for the list. I'm the person
 with the Mac lab of
 LCII's, 575's, and 580's. When the teacher whose
 room houses the lab
 went in a few days prior to the opening of school,
 she and a student
 turned a few (6-8) of the Macs on. All came up with
 the disk icon with
 the blinking ?. All but one that is. The lone LCII
 came up fine. I have
 7.5.5 on all.
 
 I have not gone in to do anything about this yet.
 Just wondered if
 anyone wants to suggest anything to look for when I
 do start trying my
 magic.
 
 She did power down and reboot a couple of machines
 but the blinking disk
 ? icon came up again.
 If I remember correctly, that icon means Can't find
 a usable system
 disk.

Are they networked? And if so, how?

William 


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Re: Blinking ? on disk

2001-08-18 Thread rlf

From: Jim Raper [EMAIL PROTECTED]
Subject: Blinking ? on disk

Hello, y'all,

Early season question for the list. I'm the person with the Mac lab of
LCII's, 575's, and 580's. When the teacher whose room houses the lab
went in a few days prior to the opening of school, she and a student
turned a few (6-8) of the Macs on. All came up with the disk icon with
the blinking ?. All but one that is. The lone LCII came up fine. I have
7.5.5 on all.

I have not gone in to do anything about this yet. Just wondered if
anyone wants to suggest anything to look for when I do start trying my
magic.

She did power down and reboot a couple of machines but the blinking disk
? icon came up again.
If I remember correctly, that icon means Can't find a usable system
disk.

I have access to Norton Utilities.

The lab was running quite well with just a few printing problems when we
shut down in the spring for end-of-school.

Jim

Try starting up from an external volume like a CD or a ZIP and re-bless 
the System folder in the machines in question before going into deeper, 
time-consuming stuff. Just remove the Finder and System files from the 
System folder and then put them back in. Then restart from the machine. I 
have found this to work quite often when any of the 30 odd LC III's 
w/7.5.5 I have running in an elementary school lab do this ? thing. I 
have no idea why or how this problem arises though.

Bob F

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Re: Blinking ? on disk

2001-08-18 Thread Gregg Eshelman

--- Alex Allee [EMAIL PROTECTED] wrote:
 on 8/18/01 1:19 PM, [EMAIL PROTECTED] at
 [EMAIL PROTECTED] wrote:
 
  Did those HD hum and make seeking noises when
 turned on?  If not,
  slap hard on sides of the Macs few times asap when
 turned on.  If
  that trick did work and hear HD spin up and make
 seeks and boots
  fine, replace HDs.  That's signs of dying HD and
 sticking heads to
  the platters is also worn HD.  This is caused by
 poor cooling on
  those HD especially those that runs hot.
 
 Sounds like good advice, but this should be a last
 resort. Check everything
 software wise and all the connections before you
 resort to beating your Macs. :)

If the drives aren't spinning at all, then try
a game of Whack-a-Mole with them. Remove
drive from Mac. Hold by edges firmly with thumb
and fingers of one hand. Two firm whacks with the
edge of your other palm, allowing the hand holding
the drive to rotate at the wrist, will usually
unstick the motor bearings. Plug drive back in and
see if it spins up. This is a good basic physics
demonstration on the principles of inertia. :)
(Inertia tries to hold the platters still while
the rest of the drive rotates around them.)

Old dead hard drives (that will still spin)
also work great for demonstrating the principles
of gyroscopic forces.

P.S. Do not hit the drive so firmly as to knock
it out of your hand. That would be bad. ;-)

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