Problems after power failure - ehMac.ca
Facebook
Twitter
YouTube
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read Advertise


Reply
 
LinkBack Thread Tools Display Modes
Old Aug 18th, 2009, 10:55 PM   #1
Honourable Citizen
 
bhil's Avatar
 
Join Date: Oct 2004
Location: Regina
Posts: 1,632
Problems after power failure

We had a power outage this past weekend, and unfortunately, I don't have a UPS. My iMac was on (with a WD MyBook Premium Edition 500GB external firewire drive connected) and my wife's iMac was in sleep mode. When the power came back on my wife's computer worked flawlessly, mine however now has a series of problems:

First, it will no longer recognize the external hard drive through firewire. I've made it work with USB, but only intermittently. Looking around I see lots of complaints about these drives not working well with iMac's (mine's a 2.4GHz Core 2 Duo, with 4 GB of RAM running 10.5.8), and while the drive had worked flawlessly until the power outage, the problems I'm now encountering do mirror those I've seen online.

Second, my iMac now intermittently goes into long pauses when attempting to do things. These things can be pretty much anything from opening a web page to trying to shutdown applications. Looking in Activity Monitor or top from the terminal shows nothing hogging CPU that should be causing problems,

Finally, startup and shutdown of the computer are now extremely slow. In addition I no longer see the standard startup or shutdown screens. On startup, instead of the gray screen with the apple logo and spinning wheel, the screen stays completely black for a very long time, then eventually switches over to a blue screen briefly before continuing the normal interface startup. At shutdown, the screen goes completely black with the exception of a little white square in the upper left hand corner for a while and then shuts off.

I've tried the usual permission repairs, resetting the PRAM, resetting the PMU, and nothing seems to change any of the problems. I've completely unplugged the external drive for now and I'm looking for a replacement that isn't a WD.

Anyone have any thoughts on any of the problems?
__________________
Ahhh...
Pleasing, inspirational, fulfilling, worthwhile insanity.
bhil is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old Aug 19th, 2009, 12:46 AM   #2
Honourable Citizen
 
Join Date: Jul 2008
Location: toronto
Posts: 1,079
~

have you tried running disc repair from your install disc? if that doesn't help i'd suggest springing for disc warrior or drive genius... likewise, using disc repair for your mybook may save the day (the power failure may have been the equivalent of disconnecting the drive without ejecting it...) drive genius may also help here... and if you're still no go you may have to do an archive and install of the os
mkolesa is offline   Reply With Quote
Old Aug 19th, 2009, 10:13 AM   #3
Honourable Citizen
 
bhil's Avatar
 
Join Date: Oct 2004
Location: Regina
Posts: 1,632
I didn't know there was a disk repair utility on the install disc. To be honest, I've never touched the install disk, Leopard was installed when I got the computer, and I've never needed to worry about it. What exactly does disk repair do? Do I have to worry about my data? That would be a concern being as there is also a problem with my backup drive.

I'll look into disc warrior and drive genius and see if they can help.

Thanks for the suggestions.
__________________
Ahhh...
Pleasing, inspirational, fulfilling, worthwhile insanity.
bhil is offline   Reply With Quote
 
Old Aug 19th, 2009, 10:53 AM   #4
Honourable Citizen
 
Join Date: Jul 2008
Location: toronto
Posts: 1,079
~

well there's a 'disc repair' utility that i'm guessing you already ran if you repaired permissions (applications > utilities > disc utility) but that won't allow you to do an repair work on the disc because it's running on top of the os... so insert your os install disc 1 and restart the computer holding down the 'c' key to start from the disc. then confirm your language but instead of installing the os look in the menus at the top for 'disc utility' and then run 'repair disc' and see how you do... when it's done do a restart holding down the 'eject' button
mkolesa is offline   Reply With Quote
Old Aug 19th, 2009, 06:37 PM   #5
Full Citizen
 
Join Date: Apr 2008
Location: Saskatoon, Saskatchewan
Posts: 140
Quote:
Originally Posted by mkolesa View Post
have you tried running disc repair from your install disc? if that doesn't help i'd suggest springing for disc warrior or drive genius
I second the recommendation of Disc Warrior if the disc utility on the install disc doesn't work. That program has saved my data more than once over the years.
Izzy is offline   Reply With Quote
Old Aug 20th, 2009, 09:45 AM   #6
Honourable Citizen
 
bhil's Avatar
 
Join Date: Oct 2004
Location: Regina
Posts: 1,632
Well, I ran Disc Repair from the install disc last night on both the internal and external hard drives, and said it found nothing to fix. I took a look at DiskWarrior but it doesn't seem relevant to my situation, it looks more like a file recovery utility. I have lost no files, and I'm not about to shell out $100 for something that doesn't look like it will help with my situation. I didn't have the time last night to deal with any fallout that might occur with an archive and install, so maybe I'll attempt that tonight.

As it statnds now, once I get the iMac issues resolved, I'll probably be replacing the external drive with a Time Capsule, which in addition to being an external hard drive, will nicely replace my aging DLink router with the added benefit of it being Gigabit based.
__________________
Ahhh...
Pleasing, inspirational, fulfilling, worthwhile insanity.
bhil is offline   Reply With Quote
Old Aug 20th, 2009, 09:58 AM   #7
Honourable Citizen
 
Join Date: Jul 2008
Location: toronto
Posts: 1,079
~

hiya, sorry that didn't work. i was thinking your drive got corrupted by the power outage in the same way you can screw up an external drive by yanking the connection without ejecting it first... i was suggesting disc warrior is actually not for data recovery, but because it re-builds the directory structure which is what i was guessing was causing the strange probs you were having, i.e. slow switching between apps and unusual start-up and shut-downs... an archive and install will get you to the same place but it will take awhile. and since both your computer and drive were affected at the same time it does seem like too much of a coincidence... and as long as there's not data you need off the old hard drive you're certainly free to do an upgrade but keep in mind if your mybook was working you could use it with an AE over USB and save some money.
mkolesa is offline   Reply With Quote
Old Aug 20th, 2009, 12:23 PM   #8
Full Citizen
 
Join Date: Apr 2008
Location: Saskatoon, Saskatchewan
Posts: 140
I agree with mkolesa. I think your directories got messed up because of the power outage. DiskWarrior would rebuild your directories and get things running smoothly again. I realize $100 is a lot to pay for software these days, but I get a little zealous about recommending it because it has always worked so well for me.

If you decide to go with a Time Machine, I would recommend keeping the WD drive and using it to keep a cloned version of your system on it using SuperDuper or similar software. Then you'll have a replica of your iMac's HD to use in an emergency.
Izzy is offline   Reply With Quote
Old Aug 21st, 2009, 09:36 AM   #9
Honourable Citizen
 
bhil's Avatar
 
Join Date: Oct 2004
Location: Regina
Posts: 1,632
OK, since you both put so much stock in DiskWarrior, I started hunting through everyone I know with a Mac, and eventually found someone that had a copy of DiskWarrior (not that I should have been surprised, he seems to have one of everything, something about having too much money on his hands). I made the promise that if it worked I would buy my own copy. I hooked up the MyBook to his laptop first and DiskWarrior ran in a matter of a couple of minutes. It said it found no problems with the directory structure, but I opted for the replace option anyway. Next I moved onto the iMac.

When I went to boot the iMac in Target Mode (by holding the T down at startup) the screen stayed black the entire time. With no indication anything was happening, I waited with my finger on the T for a minute or so and then took a chance and took my finger off the key, the screen was still black. I plugged the firewire into the laptop and it recognized the hard drive right away, so the target mode must have worked. Is this the a new clue at a larger problem?

I started DiskWarrior. It took about 4 hours to finally finish and said it found some problems, so I did a replace on it as well. After rebooting my iMac nothing has changed. All the same problems still exist. I was going to move on to an archive and install, but after starting into the process, I saw that it was going to reinstall things like the default iLife 08 apps and I had no option to stop it. I have the iLife 09 apps and wasn't sure what would happen to my photo library. I assume it will be safe in the "archive" portion of the process, but I wasn't about to test it at that time of night. In an archive and install will I have to reinstall all my apps?
Quote:
Originally Posted by Izzy View Post
...If you decide to go with a Time Machine, I would recommend keeping the WD drive and using it to keep a cloned version of your system on it using SuperDuper or similar software. Then you'll have a replica of your iMac's HD to use in an emergency.
I bought SuperDuper! a few years ago, and it is usually scheduled to backup my hard drive to the MyBook every night. However, the FireWire on the drive no longer works at all, and the USB only seems to mount the drive when it feels like it, and when it does, it doesn't seem to run at the speeds it should. When I get my Time Capsule I think this drive has itself a one way trip planned.
__________________
Ahhh...
Pleasing, inspirational, fulfilling, worthwhile insanity.
bhil is offline   Reply With Quote
Old Aug 21st, 2009, 09:54 AM   #10
Honourable Citizen
 
Join Date: Jul 2008
Location: toronto
Posts: 1,079
~

hi again,
well, i'm not quite sure what you did. using discwarrior shouldn't require the use of target disc mode... it's possible you didn't actually accomplish anything with the discwarrior. why don't you try it again? install the disc into your imac then restart it holding down the 'c' key... the computer will then boot from the disc and it'll guide you through the steps.
btw, an archive and install will not touch your photos, docs, music, etc. because they are all in your home folder and that's not touched during an archive and install...
mkolesa is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
17" iMac G5 Rev A (power supply?) Issues brycejmcewen Mac, iPhone, iPad and iPod Help & Troubleshooting 6 Nov 18th, 2008 03:00 PM
macbook pro ram installation problems Gamalen Mac, iPhone, iPad and iPod Help & Troubleshooting 7 Nov 13th, 2008 06:07 PM
Intel Imac power issues SAN66 Mac, iPhone, iPad and iPod Help & Troubleshooting 4 May 30th, 2006 05:06 PM
ibook clamshell power problems - need help, pls! jkietzma Mac, iPhone, iPad and iPod Help & Troubleshooting 4 Mar 30th, 2005 06:47 PM
New G5... problems. *sigh* gruegoo Mac, iPhone, iPad and iPod Help & Troubleshooting 3 Jan 25th, 2005 10:46 AM


All times are GMT -4. The time now is 05:45 AM.



Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Copyright 1999 - 2012, ehMac.ca All rights reserved. ehMac is not affiliated with Apple Inc. Mac, iPod, iTunes, iPhone, Apple TV are trademarks of Apple Inc. Content Relevant URLs by vBSEO 3.6.0 RC 2

Tribe.ca: Urban living in Toronto!