Disk repair and startup\dvd drive issues

i'm running 10.6 on a 2ghz macpro - disk repair has found problems on the startup disk. i know i need to boot from another disc to repair the system drive, but i'm having problems doing so.
the dvd drive won't startup from either my original installation discs (tiger) nor my snow leopard dvd. restarting and pressing 'C' does nothing, then the tray opens and the mac starts from my HD.
I have a superduper backup on an internal drive, i can start from this but disk utility won't allow the repair of the main HD, saying it can't unmount it. I'm sure i've done yhis before by creating a temporary admin account and running dick utility from there, but even this isn't working this time.

First, under no circumstances should you try to use a Tiger install disk to repair problems on a Snow Leopard system. You need to use a Snow Leopard disk.
Second, make sure that you are using the disk that you used to install SL on the Mac Pro. It must be a disk that has a system newer or equal to the one that shipped with your machine. If your machine originally shipped with Tiger, but is currently running Snow Leopard, then any retail Snow Leopard disk should be able to boot the machine.
If the machine won't boot from a legit disk that it should be able to boot from, then either the disk itself is damaged or you have a hardware problem. Or, very rarely (I've only ever heard one first-hand report of such a thing), you could have such a severely-corrupted hard drive that it actually prevents you from booting from anything.
Are you able to load DVDs in your machine at all? What happens if you put in the SL disk when the machine is booted from another drive? Are you able to boot into [Apple Hardware Test|http://support.apple.com/kb/HT1509]? If so, run the extended tests.
I'm not sure why you'd be unable to repair the drive when booted from a backup on a different internal drive. Does that backup drive have the same version of the OS? Are you running Disk Utility from the backup drive or from the drive you're trying to repair?
You could try booting into single-user mode (hold down command-s at startup), then type "fsck -fy" at the command line. When fsck is done, run it again. Continue until either no problems are found or until you're reasonably sure it'll never manage to fix them all.
You could also try getting a copy of [DiskWarrior|http://www.alsoft.com/DiskWarrior/index.html] or [TechTool Pro|http://www.micromat.com>, which can fix some things that Disk Utility can't.

Similar Messages

Disk Repair and Corrupt Hard Drive

I just replaced the hard drive on my iMac because the computer kept hanging and occasionally shutting down. I've run Disk Utility many times over many months on the old hard drive and the message I received is that the hard drive was corrupt and needed to be repaired; DU reported both an invalid file count and an invalid directory count. I made a clone of the old drive before replacing, and low and behold I still receive the same message when I run DU on the new drive. I reinstalled Snow Leopard and added all upates to 10.6.8 via Software Update before cloning the drive. Is the new drive defective? Do I need to reinstall the OS on the new drive? Other ideas? Thanks.
iMac 5,1
OS 10.6.8
2.16 Intel Core 2 Duo
3G SDRAM

You can try this instead:
Reinstall OS X without erasing the drive
Do the following:
1. Repair the Hard Drive and Permissions
Boot from your Snow Leopard Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
2. Reinstall Snow Leopard
If the drive is OK then quit DU and return to the installer. Proceed with reinstalling OS X. Note that the Snow Leopard installer will not erase your drive or disturb your files. After installing a fresh copy of OS X the installer will move your Home folder, third-party applications, support items, and network preferences into the newly installed system.
Download and install the Combo Updater for the version you prefer from support.apple.com/downloads/.
Most likely you had the same problem because it was associated with your existing Home folder. Best to avoid cloning your old system.

Cant start up on my Macbook pro. All I get is a grey spinning wheel. Tried all the Startup key combinations and nothing works. I reset the NVRAM and nothing. I booted with start up disk , ran disk repair and all is ok. Tried to re-install OS but when I ge

Can not start up on my Macbook pro. All I get is a grey spinning wheel. Tried all the Startup key combinations and nothing works. I reset the NVRAM and nothing. I booted with start up disk , ran disk repair and all is ok. Tried to re-install OS but when I get to designating drive its blank. When I go to startup disk there is a "?" mark. When I restart under startup disk search for a drive it still comes up with nothing. Before I got the grey spinning wheel I had a locked screen. Could not move curser or click on anything. Finally just shut down. Thank you in advance for any help!

Shouldn't still have a 'beachballing'... if the drive is being found and the system is trying to boot from it but is having problems, I would suggest looking over ds store's user tip - Step by step to fix your Mac.
It's likely either something corrupt in your system files or a failing hard drive. But follow ds's steps until you find the cause of the problem.
Good luck,
Clinton

I installed Lion online and i ran disk repair and found that i needed to do a repair but i have no start up disk. How do i repair without burning a disk?

I installed Lion online and i ran disk repair and found that i needed to do a repair but i have no start up disk. How do i repair without burning a disk?

Lion creates a Recovery partition on your harddrive. You will need to boot from startup.
click here
http://support.apple.com/kb/HT4718

ITunes for 64bit Windows 7 Driver/CD/DVD/Drive Issues-

Hi There
I am sure that there are many many users out there suffering the same frustration as me in regard to ITunes just not working properly with Windoews 7 (64Bit).
I have been trying to solve the mystery of "ITunes for Windows Registry Settings Warning When Opening Itunes.
I have tried all the recommended actions to correct this problem without any success and I do mean ALL.
Below is a screen shot of my registry, can anyone see anything wrong with it?
In the meantime (Last four months) I have stopped using ITunes and instead have used Digital 7, this will be my very last attempt to get ITunes working properly, failure will mean consigning ITunes to the same place as any other Software that does not do wshat it says on the can.
I hope someone can help.

That's good that it is in device manager, but what about in Computer with the rest of the drivers?
Also, are the drives listed in Computer and device manager or just device manager?
I want to verify if the symptoms are present for a particular software issue before looking at other issues. I really doubt it is a driver issue at this point. If it was, then I suspect the issue would be present from day one.
It could be that the lens has dust buildup preventing it from working properly. They do make CD cleaning kits that have a special CD designed to clean the laser as it passes over the lens. If you happen to have one of these, or access to one, I recommend trying this step to make sure it isn't as simple as dust buildup interfering with the laser.
It could also be hardware failure, but I would like to try a few other steps before coming to that conclusion.
It may be worth reviewing this document as it covers a lot of the most common issues behind DVD drive issues. Feel free to skip any steps you have already tried.
Let me know what happens.
↙-----------How do I give Kudos?| How do I mark a post as Solved? ----------------↓

Directory Damage, what can be used for Disk Repair and Virus Detection?

Hi,
My eMac is acting up. Yesterday I started getting these messages that I needed to restart my computer (message was in a brown box window with an icon of a start up button in background).
I did the disk repair using Start up CD and it came back with "invalid key......." or something like that, and when I tried to repair it, it tried to repair the B-Tree's but then said it could not repair the problem.
I have Diskwarrior 3.03 Build 39, on a CD and on my FW Ext HD, which has a clone of my Mac HD.
Diskwarrior could not produce a graph of Mac HD because the directory was damaged. When I did a rebuild it hung on step 9 comparing directories, said there was 7 million + tests. ( I let it hang on step 9 for 15 hrs. to see if maybe it was just taking a long time due to corrupt directory). I finally clicked on Skip and got to the report page. I could do a preview, but the replace button is greyed out. When I was comparing the sizes of each folder, in both preview and original, I got a can not calculate error message on a few of them. The size of Mac HD in preview compared to the one in Original was different by 4 gbs. A week ago I repaired the Mac HD and did a Diskwarrior directory repair on all my HD's.
Before I do any reformatting of HD or other drastic measures, I was wondering what is safe to use for disk repair and virus detection. I know there is Norton System Works 3.0, Norton AntiVirus and TechTool, are these the only ones? Are these safe to use? Are there any other programs that can repair directory damage?
Thank you in advance,
Deb
eMac 2005 1.42GHz Combo Drive 256MB Tiger 10.4 75GB Mac OS X (10.4) Western Digital (WD) 160GB FW Ext & WD 320gb Media FW Ext, Creative Speakers

The long-standing rule of thimb has been that if Disk Warrior can't repair a mungled disk directory, then you're looking at reformatting or replacing the hard drive. Since this is a week-old hard drive, I'd suspect the replacement hard drive is itself bad. It might save you grief in the long run to contact the vendor who sold you the drive and inquire about their warrenty. You might want to first run the file system check utility fsck as described in Using Disk Utility and fsck
Directory repair and antivirus protection are different critters. Norton AV is mostly safe (if you don't mind it's track record of false positives) and is used by the IT department at the lab where I work. Norton SystemWorks, AKA Disk Doctor Kervorkian, is most assuredly NOT safe. For every poster reporting something nice about it, you'll find at least 2 dozen cursing it. It has a known track record of detecting problems no other utility finds and of "repairing" drives such that nothing can then read or repair the drive short of low-level reformatting (and occasionally even that fails).
Tech Tool Pro 4 has a good reputation, as does Drive Genius. Tiger OS X 10.4.2 and later include a version of Disk Utility that can for the first time also make effective B-tree and keys out of order and overlapped extent repairs. Still, my personal gut feeling is that if Disk Warrior is choking on the hard drive, you're looking at reformatring while zeros the drive (zeroing should detect and map out bad physical secotrs).
You can also refer to Disk First Aid: What to do when it finds an error and to Handling "overlapped extent allocation" errors reported by Disk Utility or fsck

I still have Cd/DVD drive issues

The CD is ejected after a short while and never mounted. I have cleaned the optics of the CD drive and reset my PRAM.
Has anybody discovered a complete solution for this problem.

That's good that it is in device manager, but what about in Computer with the rest of the drivers?
Also, are the drives listed in Computer and device manager or just device manager?
I want to verify if the symptoms are present for a particular software issue before looking at other issues. I really doubt it is a driver issue at this point. If it was, then I suspect the issue would be present from day one.
It could be that the lens has dust buildup preventing it from working properly. They do make CD cleaning kits that have a special CD designed to clean the laser as it passes over the lens. If you happen to have one of these, or access to one, I recommend trying this step to make sure it isn't as simple as dust buildup interfering with the laser.
It could also be hardware failure, but I would like to try a few other steps before coming to that conclusion.
It may be worth reviewing this document as it covers a lot of the most common issues behind DVD drive issues. Feel free to skip any steps you have already tried.
Let me know what happens.
↙-----------How do I give Kudos?| How do I mark a post as Solved? ----------------↓

How can I boot linux from usb drive and/or dvd drive on a windows 8 laptop please?

Hi all,
Could someone describe how to set my windows 8 laptop to boot linux from usb and or dvd drive step by step please? I have HP laptop. Thank you.

http://www.cisco.com/en/US/prod/collateral/modules/ps6247/prod_qas0900aecd80232483.html
     Q. What sizes of USB Flash sticks are supported?
     A. USB Flash sticks are supported in 64, 128, and 256 MB sizes. No other sizes are supported.
     Q. Can I use any USB memory stick for this application?
     A. No. Only Cisco USB memory sticks are supported.
Q. Can I boot an image directly from the USB Flash module?
A. Yes. USB drivers have been added to rommon, starting with version 12.4(13r)
     Q. Can I format the USB Flash module on the router?
A. Yes. You can format the module on either a router or a PC. You must specify "FAT16 file system" as the file system for the PC format process to use.
If your setup satisfies above conditions you can get the router to boot up with the IOS on the USB flash
If you are in ROMMON mode, use 'dev' to find out the name of the USB Flash (should be usbflash0).
set BOOT=usbflash0:
If you are in the router,
boot system flash usbflash0:

None of the changes I make to system preference or the dock will hold after restart. I've cleared the RAM, run disk repair and reinstalled the OS. Now what?

None of the changes I make to system preference or the dock will hold after restart. I've cleared the RAM, run disk repair and reinstalled the OS. Now what?

MobileMe closed on July 31, 2012.
It is true that the only way to sync your Mac with iCloud is to upgrad. You need to be running OS X Lion 10.7.2 or higher in order to sync your Mac with iCloud. At this point, you can upgrade directly to OS X Mountain Lion from the version of OS X you are now running (10.6.8). You can purchase and download the Mountain Lion upgrade from the Mac App Store for $19.99. After upgrading you will see iCloud in System Preferences. This guide explains how to sync your Mac with iCloud after upgrading: http://www.apple.com/icloud/setup/mac.html.
Once all your devices are signed into the same iCloud account and you have turned on your iCloud data syncing, you will be able to keep them all in sync using iCloud. You will still have to sync with iTunes to manage your iTunes media such as music, movies, podcasts, etc. You will have the option to either continue backing up automatically with your computer when you sync with iTunes, or to back up your iOS devices automatically to iCloud every 24 hours (as long as they are connected to wifi and your chargers).

Any solution to DVD drive issue post Lion install yet?

Any solution to DVD drive issue post Lion install yet?

Since installing Lion no DVDs are being read by the superdrive, this is a problem that has been highlighted by quite a lot of people.
CDs are being read fine.
After inserting the DVD there is some noise, sounds like it is trying to pickup the DVD then spits it back out.
Previous posts from other people:
http://www.mac-forums.com/forums/os-x-operating-system/245917-heads-up-lion-supe rdrive-fake-glitch-possibly.html
https://discussions.apple.com/thread/3199297?start=15&tstart=0

DVD drive issue and permissions repair

Forgive me if I'm combining two issues in this posting. If they are not related I can separate them out.
I don't know if my drive is going, but I have a DVD for a tv show that I wanted to watch on my Macbook Pro running Snow Leopard (latest patches). For a while now I've had to keep reinserting the disc because it's not registering. I put it in, and can hear mechanisms, then it spits it back out.
I watched one disc, ejected it then tried to play another and it just would not load.
I thought of checking disk permissions, thinking maybe the OS had some permissions problems that may be preventing it from reliably reading the disc. The disk utility reported a number of permissions errors and owner errors, so I repaired the permissions and it reported that it was completed successfully. I thought I'd run the verify permissions again, just to make sure the errors had really been repaired, and they're still there - some of them were gone, but there were others reported. I ran the repair and verify a number of times now and nothing's changed.
My questions:
1. Could the problem I'm seeing with my DVD drive be related to permissions of some of the system files?
2. Do I have anything to worry about with the disk permissions not appearing to be repaired?
3. Would I gain anything by booting to install media and running the verify and repair from there?
Thanks much in advance!

Could the problem I'm seeing with my DVD drive be related to permissions of some of the system files?
If you've repaired permissions, and you still have the problem, then the answer is no.
Do I have anything to worry about with the disk permissions not appearing to be repaired?
Mac OS X: Disk Utility's Repair Disk Permissions messages that you can safely ignore
Would I gain anything by booting to install media and running the verify and repair from there?
No.

Time Capsule Hard Drive - Disk Repair and NAT

When the "original item" can't be found on the time capsule hard drive, how does one go about connecting TC to a computer to run a disk utility to repair the TC hard drive? By the way, I was merrily rolling along with TC until this morning. Suddenly, there is a network issue and I can't connect to the internet because of the DHCP range and the hard drive can't be found. Talk about the double whammy!

"because of the DHCP range" means weak signal or interference

I have a MacBook Pro, it recently started freezing upon startup. It would get to a blue screen and just sit there. I've tried booting in safemode to run disk repair and still doesnt help. If I do manage to get past the blue screen, it still freezes

My mac keeps freezing upon startup. It will get to the blue screen and promptly freeze. If I manage to get past the blue screen, and open up youtube on google chrome, it will freeze before it loads youtube. I've tried safeboot and disk repair, nothing seems to work. I even tried to factory reset it but it wont connect to my internet when I reboot with power + option.. any ideas?

This can be used to boot the machine and delelte enough files to get it to boot normally.
.Create a data recovery/undelete external boot drive
Read about storage drive so you can store your extra stuff.
Most commonly used backup methods
Also here to see how a full boot drive slows the machine down
Why is my computer slow?

Satellite L300D-11A - DVD-drive issue and Blue Screen

Hi
I'm going out of my mind :o//
My Satellite L300D-11A was delivered with a Windows Vista Home Premium, but I recently made a clean installation of the Windows 7 Home Premium 64 bits.
Since then I have had problems with "Blue screen error's" comming randomly. Have purchased and installed a Registry clean up program, but that did not fix the problem. Any one else with that problem - and a possible solution.
And now for my big problem. My CD and DVD drive is driving me crazy ;o) It's a Mat****a DVD-RAM UJ-850S ATA and from my search on the internet I have found that a lot of other Mat****a owners have had the same or similar problem(s). My drive will not regonize or play/read from CD's. DVD with movies or programs I can play. Burning CD's is not possible and burning DVD's is sometimes working, and other times not.
I have read about the different fixes that is posted - also here on the Toshiba forum - Non of the suggested solutions is working for me - any new solutions that I could try.
Seriously thinking about buying a external USB DVD drive/burner - but can someone please tell me why Toshiba does not get the fingers out off their B** and find a solution like it seams Sony has done.
Look forward to any reply ;o))
Someone once told me about this quote - "Don't wish it was easier - work on getting clever !" I need your help to get clever ;o))

> But I do not now how/where to get the registration keys! I have tried looking for them.
Are you talking about *Upper/Lower Filters* ?
Follow these instructions for clearing the Upper/Lower Filters:
Click on Start --> Run --> and type in 'regedit' followed by the enter key
Expand the "HKEY_LOCAL_MACHINE" key (looks like a folder) by double clicking it (or clicking the "+" next to it.)
Expand the "SYSTEM" Key
Expand the "CurrentControlSet" Key
Expand the "Control" Key
Expand the "Class" Key
Please look for a key containing the following string of letter and numbers:{4D36E965-E325-11CE-BFC1-08002BE10318}
High light this key by left clicking once on it
On the right hand side you are looking for "UpperFilters" and "LowerFilters" under the "Name" column, once you find these please delete them by right clicking on them and choosing "delete"
Please exit the registry by clicking on the "X" in the top right hand corner of the screen
Reboot your computer

Compaq presario f750us sound and dvd drive issues

i have a compaq presario f750us runnin windows 7 ultimate 32-bit when i first turn on the machine the sound and dvd drive work correctly but after about a hour of it being on both devices stop working an they dont appear in device manager.

Have you looked at your AutoPlay settings?
what is autoplay: http://windows.microsoft.com/en-us/windows/change-autoplay-settings#1TC=windows-7
FAQ tutorial: http://windows.microsoft.com/en-us/windows/autoplay-faq#1TC=windows-7
I am a volunteer. I am not an HP employee.
To say THANK YOU, press the "thumbs up symbol" to render a KUDO. Please click Accept as Solution, if your problem is solved. You can render both Solution and KUDO.
The Law of Effect states that positive reinforcement increases the probability of a behavior being repeated. (B.F.Skinner). You toss me KUDO and/or Solution, and I perform better.
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Printer -- HP OfficeJet Pro 8600 Plus

Disk repair and startup\dvd drive issues

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