Hot on the Tail (not Trail!) of the Security Issue, mid-day Friday, my Mom tells me she has someone coming over to her house to look at her computer. I start to tremble. It seems she's had the big lock up (more like lock out) and her Windows98 machine (yeah, there are still people out there running Windows98) will not boot and she's got what she thinks is her start-up CD in her second CD drive.
Friday evening, we talk on the phone, and she says her hard drive crashed:
"What makes you think that?" I ask.
"Well, the guy said my hard drive was bad," she replies, "so I need a new hard drive."
"Mom, will you bring it over tomorrow?"
"Sure!" she says.
Bright and early Saturday morning, My Mother in Her Black Miata arrives. Out of her trunk she pulls her machine - no keyboard, no mouse - just the machine with the power cord hanging out of the back. Alrightie then. Welcome to Saturday. Off goes the case covers, into the socket goes the plug, press the button and ... click, click, click, click goes the hard drive and whrrrrrrrrrrrrrr goes the second CD Drive. Hmmmmm. This does not sound like a happy machine.
"Mom," I ask, "Did he open the case?"
"No. He just turned it on, heard that sound and said my hard drive was bad."
"Oh." I sighed. I have a hard time believing that ANYTHING can be deemed "irretrievably broken" without actually removing the cover and LOOKING at whatever it is. And my Type A Personality in less than a millisecond judged that "computer person" as just slightly more competent than a complete idiot. Sorry, but welcome to Val. I'm no computer genius, but I don't give up that easily.
First, the CD in the drive. The motor was receiving power, but the drive wasn't spinning and the door was well and truly stuck. I pressed that button, I pulled on that door and that blasted beast was not about to let go of that CD. So, I took it out of commission by removing the ribbon, the power supply and the cable to the audio in. At this point, I didn't have it hooked up to a monitor so I wasn't modifying the BIOS. And that was one less problem to complicate my Mission.
Now for the hard drive. What was that familiar clicking sound? Where had I heard that before. Click, Click, Click, Click, then in rapid succession: click,click,click,click,click,click,click,click,click,click,click,click. Ahhh, I know! One of the Zip Disk Drives on one of my other computers does that. By the way, or, "later that day" I'm on the phone with my Web-Host-All-Things-Computer-Guru - on Saturday! - and he says, "That's 'stiction'." Oh what a good word for that!
From WeboPedia:
(n.) Short for static friction, a condition in which a hard disk drive's read/write heads become stuck to the disk’s platters with enough strength to keep the platters from spinning, resulting in hard drive failure. When a computer is turned off, its hard drive's read/write heads park on the platter's landing zones. Under normal circumstances, the heads will lift off the platter when the computer's hard drive is activated and the platters rotate. Stiction typically occurs when a computer has been turned off for long periods of time.
Stiction, huh? Well, that doesn't mean her Hard Drive is bad. Time to hook the box up to a monitor, keyboard and mouse. Into the office I march, machine in hand. Plug. Plug. Plug. Plug. Switch and Press the button to turn it on. Wait. Click, Click, Click, Click. click,click,click,click,click,click,click,click,click,click,click,click. Hmmm... No drive light illumination. Hmmmm...then:
DISK BOOT FAILURE, INSERT SYSTEM DISK AND PRESS ENTER Ahh, the prelude to the kiss of death. But wait, I am on a mission! Back to the web I go to find the Checklist from a favorite site: TechRepublic. (Remember, it's a Checklist, not a Do List.)
- Physical connectivity? (YES) Is the drive receiving power? (YES) Is it plugged into the PC by a correctly connected ribbon cable? (YES, RED STRIPE IN #1 POSITION) For an IDE drive, are its jumpers set correctly? (YES, SET TO CABLE SELECT)
- BIOS setup? (YES) Does the BIOS see the drive? (YES)
- Viruses? Does the drive contain any boot sector viruses that need to be removed before continuing? (HMMMmmm...It seems my Mom didn't have an Anti-Virus Recovery Disk so this nifty little Item cannot be confirmed not denied).
- Partitioning? Does FDISK find a valid partition on the drive? Is it active? (Well, it was three days ago!)
- Formatting? Is the drive formatted using a file system that the OS can recognize? (SEE ABOVE)
- Drive errors? Is a physical or logical drive error causing read/write problems on the drive? (SIGH, CAN'T GET TO SCANDSK YET)
- Operating system? Does your OS have a feature that checks the status of each drive on your system? If so, what is that status? (Another obstacle - I cannot get to the operating system and, I NEVER ran Windows98. Hmmm. Well, we'll cross this bridge if we get to it!)
It must be time to change tactics. Certainly if there really is a Boot CD in the drive isn't functioning, I should be able to get it out of the drive and use another drive, yes? More unscrewing ensues, a bit of pulling and the drive is free. Wrenching and prying the door of the CD Player open, I pull the drive open to reveal anything but a Windows 98 Startup disk. I should have guessed this part.
With the CD Player out of the box, I could more fully concentrate on why the Hard Drive was not functioning. Time to power it up again only to get a different error message on start-up.
Frustrated, I return to the forlorn-looking CD Player now in pieces on my desk. Maybe the CD was just stuck in the drive and the drive will function now. Plug it back into the Molex socket, turn on the PC, press the button. But the same high-piched whirring ensues and the drive door does not open. I shut the machine off for the thousandth time and begin pacing. I walk outside.
Now something is really fishy here. Time to get out the Multi-Meter.
Every home should have a multi-meter. A multi-meter rivals duct tape as the number one cannot do without item, although I have heard a rather embellished story about a guy sealing up his aircraft door with duct tape so he could fly it across the pond from the Bahamas to Florida. I suppose in
that situation, I'd rather have the duct tape. But inconsistent error messages and changes in sound make me wonder about the power supply to the drive.
A return to the web results in a relevant document by Tomi Engdahl, "How to Get Power from PC to Your Circuits."
Normal floppy disk and hard disk drives use normally +12V and +5V power supplies, so spare disk drive power connector is very useful if you need those voltages for your own projects which you fit inside PC (for example extra fan for better cooling). Typically you can take up to few amperes of power form the disk drive power connector (remember not to exceed the total power rating of the PC power supply when you start taking extra power for your circuits).
Here is the power connector pinout when you look the CEE-type connector on the drive back:
_______
/ | 1 2 3 4 |
|_________|
Pin Function
1 +5 V
2 Ground
3 Ground
4 +12 V
According to the BIOS, these voltages are correct coming from the Power Supply. But what about the Molex Connector that connects the Hard Drive to the Power Supply? I unseat the connector and peer into the cylinders. It looks fine. But for grins and giggles, I plug a different connector from a different bundle of wires into the back of the disk drive and fire up the machine.
No stiction. Drive light illuminating. No error messages. And looky there - there's the Windows 98 Intro Screen. This is good. Let's put the multi-meter to work on the other connectors on the other bundle of wires because it looks to me like we have a power supply issue.
Ground to ground, test the 5V red wire. No problem. Ground to ground, test the 12V yellow wire. PUFF! POOF! Dead Shut Down. WOW! I think that wire is bad.
I cannot explain the dead CD Player issue. Frankly, I did not pursue a reason; it was more critical I either save my Mother's Hard Drive or determine beyone a shadow of doubt that it had, in fact, failed. In fact, her Hard Drive is fine. Instead, the yellow 12V wire going to the Molex Socket was bad (or, perhaps the connection itself was not good). I suppose the first thing I should have done was drag the multi-meter out and test each Molex Socket. Afterall, the first item on the Checklist is Physical Connectivity. "Is the drive receiving power?" is one of those basic items - like, is there fuel in the tanks? Then the next logical question is, "Is there enough power or fuel?"
[1]
Abexis Hosting Solutions (home of my personal Tech Guru)[2]
WeboPedia[3]
Troubleshoot Hard Drive Failures in 7 Easy Steps[4]
How to get power from PC to your circuits