Mac not reading RAID drives

I have been having problems with my ATA VideoRaid drive of sometimes the computer not recogning it and not mounting it to the desktop or finder. I go to the system profiler, and it recognizes it there. It is connected through a SCSI cable connection. I go to Disk Utility and it recognizes it also, it recognizes the ATA RAID drive, and it also recognizes it as the name I have given it, MediaExternal. But the MediaExternal portion of it has like a blank document image next to it.
The MediaExternal is the way I formatted the drive, Mac OS Extended. I have been having problems with this RAID, with it loosing sync during a video capture. I use this RAID with Final Cut Pro editing system. I have fixed the problem with the sync loss, mostly after buying Disk Warrior and basically erasing the whole drive, and trashing the preferences in FCP.
But now my problem is with the drive not mounting on the desktop or finder. Any advice!
G5 Dual 2 GHz PowerPC
8 GB DDR SDRAM
Mac OS X 10.4.8

It won't allow me to verify permissions or even repair them. It will only allow me to verify disk and repair disk, in which both of those came back ok. I really can't back anything up, because it won't even allow me to access the files.

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I have an imac 2009 the disk drive is damaged and I have lost the passwords I need to reset passwords I tried booting with a macosx disk from an external hard drive but did not read the drive how else can I reset password ?

I have an imac 2009 the disk drive is damaged and I have lost the passwords I need to reset passwords I tried booting with a macosx disk from an external hard drive but did not read the drive how else can I reset password ?
I have a 2012 mac book pro can I use that to connect with firewire and load osx that way? and how woudl I do that?
Thanks so much!

To what password are you referring? Do you mean your user account's admin password? Or do you mean the master password for File Vault or do you mean a Firmware Password?
For an admin password:
Forgot Your Account Password
For Snow Leopard and earlier
     Mac OS X 10.6- If you forget your administrator password
For Lion/Mountain Lion
    Boot to the Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
     When the menubar appears select Terminal from the Utilities menu.
     Enter resetpassword at the prompt and press RETURN. Follow
     instructions in the dialog window that will appear.
     Or see Reset a Mac OS X 10.7 Lion Password and
     OS X Lion- Apple ID can be used to reset your user account password.
If you cannot do the above then try this:
1. Boot to Safe Mode by restarting and after the chime press and hold down the COMMAND-S keys until a black screen with white type appears.
2. At the prompt, type the following commands pressing return after each command line:
     /sbin/fsck -yf
     If you do not receive a "Filesystem OK" message then repeat this command until
     you do. If after seven tries you still do not receive a "Filesystem OK" message,
     then the system is corrupted and needs to be reinstalled.
     mount -uw /
     cd /private/var/db/netinfo
     mv local.nidb local.old
     rm ../.AppleSetupDone
     shutdown -r now
The second-to-last command above will cause OS X to think that the operating system is newly installed, and when the new owner starts up the computer it will send him/her to the startup wizard where he/she can start a new user without reinstalling.
This last method does not actually change a password. It simply removes the user accounts and lets you create an initial admin account as if the computer were new out of the box.
How to reset the OS X password without a startup CD:
Reboot into Single-user Mode. Enter the following and press RETURN after each command line
   1. Type fsck -fy
   2. Type mount -uw /
   3. Type passwd <username>
I have never tried this method myself.

Question Mark / not reading hard drives

I have a flashing question mark /apple icon on the attempts to startup my G4 . Not reading the drives . I have used the startup disk & checed the profile & it reads the drives in the extensions, however not on startup

http://docs.info.apple.com/article.html?artnum=58042 Macintosh: Flashing Question Mark at Startup
http://docs.info.apple.com/article.html?artnum=31355 Mac OS: Flashing Globe When Computer Turns On or A folder that has an alternating flashing question mark
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Mac not reading usb black x duet hdd, mac not reading usb black x duet hdd

mac not reading usb black x duet hdd

Try a SMC reset:
SMC RESET
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Unplug the computer's power cord and all peripherals.
Press and hold the power button for 5 seconds.
Release the power button.
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I bought a 2 tb G Drive about a year ago and was using it on my previous laptop which got stolen. I want to use my G Drive with my new laptop but for some reason it is not reading it. I tried everything. I looked for it in disk utilities also and it does not show. SOMEONE HELP!!!!!!!

- Is it connected via USB?
- Have you tried another cable?
- Is the HD AC power (vice powered by the connecting bus?
- Can you feel.hear the drive spinup?
- Go to System report and see if the enclosure and HD show up? If USB is is under USB
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BTW, this is Mac Pro desktop forum

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Can someone offer a download/quickfix to this problem? One DVD in particular works fine on my DVD player connected to my TV, but will not read on my computer.
Is there something I can download to improve the readability of the software? I have Toast 7 and IDVD, but I think the problem isn't with either player, but something with the machine.
Thoughts ?

Many have reported mixed results reading DVDs on Macs and here are the most common reasons:
1. If these are all commercial movie DVDs, and they are the standard size on
http://docs.info.apple.com/article.html?artnum=58641
and the problem is strictly with playing movies, I'd contact Apple here:
http://www.apple.com/contact/phone_contacts.html
2. There are some programs in the media content of discs that only work on Windows or a special DVD Player called Interactual Player. http://player.interactual.com/default.asp?code=MAC
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Older Macs don't support DVD+R DL or single layer at all. To find out if yours does, check the specs of your Mac:
http://www.info.apple.com/support/applespec.html
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PC burnt DVDs in UDF or Joliet may not read at all whereas those burnt in ISO 9660 have a much better chance of being read. For UDF, you may need:
http://www.softarch.com/us/products/rdvd.html
4. DVDs burnt for different regions than a region locked DVD drive may also not play:
http://docs.info.apple.com/article.html?artnum=60183
(Thanks to a. brody)

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Could you please let us know the browser that you use.
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Sunil

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I have a Macbook Pro, that stopped working on me.
After some tinkering around, I was able to boot up after it crashed, but only by removing the hard drive and accessing it through the USB ports.
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A- How do I see if the computer is recognizing the internal hard drive? (I purchased a new one and placed it in the unit)
B- How do I clone the old hard drive, now external, to the new hard drive?
I also was not able to partition the new hard drive yet
thanks!

If the drive mounts through a USB, it should be OK. The cable connecting the HD to the logic board inside the system may be faulty. That service/part runs around $75 and can be had at the Genius Bar. Or find other sources: https://www.google.com/#q=macbook+pro+hard+drive+ribbon+cable&revid=1133110092

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Hi all! I wasn't sure where to put this so here I am.
I'm currently transferring old VHS cassettes to DVD-R using the Sony RDR VX530. The disc plays in the Sony. I finalize it and take all appropriate steps. When I insert the DVD-R into my MacBook, it says "Burnable Disc" and shows no files. None at all. I took the disc to my sister's house and put the disc in her Windows laptop and ::BAM:: all the files were there and playable on the windows machine. What gives? I can put other dvds in the drive and see the Video_TS and Audio_TS files, but not the ones I record on this machine. The machine only has two recording options, VR and Video, both of which have to be finalized. Is there a solution besides me having to go borrow a windows laptop to connect to the network so I can pull the .vob files onto my mac?

It sounds to me like you didn't finalize your DVD!
Most DVD recorders and DVD cameras don't finalize the DVD until you specifically tell them to. This finishes writing things like file system information on to the disk but it also makes it so that more data cannot be written to the disk in the future. (This is why it doesn't do it until you tell it to).
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I did. I unplugged the hub, and plugged the camera and docking station (which has always worked before, even through the hub) to my computer directly.
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Hello..
I just bought the airport express and I connected the ethernet cable from my cable modem to the port. At this point the Airport light was green and the lights on my modem were flashing as if it was working.
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Hello,
I'm running a G4 tower w/ dvd-rom/cd-rw,ZIP,20G HD, and a 40GHD. They are all hooked up to the Internal ATA connectors (HD's on one, CD/ZIP on other).
Yesterday I had to unhook them, now I can't seem to get either of the hard drives to show up.
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I remember my G4 being picky about IDE combos and jumpers, but never this picky.
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I just noticed that some how along the way, I seem to have broken a PIN of the the back off both hard drives. They are both missing 1 pin each (not including the one that is missing by default) it's the pins that the IDE cord plugs directly into. I assume that these missing pins are at the root of my HD troubles.
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-Sam

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Mac not reading RAID drives

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