Imac won't recognize mac external firewire 800 drive

iMac suddenly stopped recognizing my firewire 800 gdrives. worked this afternoon, and the drives worked on my macbook pro. any suggestions would be greatly appreciated.

Reset the SMC > Resetting the System Management Controller (SMC)
1. Shut down the computer.
2. Unplug the computer's power cord.
3. Wait fifteen seconds.
4. Attach the computer's power cord.
5. Wait five seconds, then press the power button to turn on the computer.
Then the PRAM > About NVRAM and PRAM
1. Shut down the computer.
2. Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
3. Turn on the computer.
4. Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
5. Hold the keys down until the computer restarts and you hear the startup sound for the second time.
6. Release the keys.
Reconnect your FireWire Drive.

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Computer crash with iTunes - Using external firewire 800 drive

I am using an external firewire 800 drive (2TB Lacie) to store all my music for iTunes... At random times this crashes the computer, the music "skips" and the computer has a grey notice telling me to shutdown immediately. I am not sure why this is happening, but think this must be some sort of conflict issue... but no clue how to resolve... Any advice would be great!! Thanks!

Oh no, sounds like kernel panics. Time to head directly to The X Lab to read the FAQs and get started with maintenance and troubleshooting. Unfortunately, this problem goes way beyond iTunes, so for additional support, you should post in the appropriate OS X forum.

New iMac won't recognize my external monitor.

I just upgraded my workplace computer to a late-2012 iMac (with the thin edges) from the previous older model.
I have an external monitor that I use as a secondary screen - a Samsung SyncMaster BX2440 - that worked great on my older machine using the DVI adapter.
When I plug the same adapter into my newer machine, it won't recongize the external monitor.
I tried resetting the PRAM, but no dice.
Is this a Thunderbolt issue, and if so, how easy is it to resolve? Do I just need to get a newer DVI adapter?

Loner: I looked at that and it only shows the main iMac display. Doesn't show the other device.
The model I'm using is a Thunderbolt machine (has the lightning bolt arrow icon). The previous machine was a DisplayPort model.
The adapter is the Apple-issued DVI adapter, but I'm guessing that even though TB and DP use the same physical plug interface, the adapters are not compatible?
(The adapter has the standard monitor icons on it - box with vertical lines on either side).

My power mac doesn't recognize my external firewire Hard Drives anymore

I was working with my Power mac as usual, it freeze, after rebooting, any of my firewire hard Drives apears

Hola Alfredo:
En primer lugar, nadie debe estar utilizando la versión 10.4.2 del Sistema Operativo. Actualízalo a 10.4.11 a la brevedad posible. Vas muy atrasado con esa versión tan obsoleta.
Intenta inicializar tu máquina después de haber apagado y encendido de nuevo las unidades de disco duro.
Si no las ve tu Mac en esas circunstancias, pueden haberse dañado, y eso requerirá otras medidas adicionales.
Si tienes DiskWarrior, pruébalo primero. Luego con Disk Utility de Apple.

Can't boot from clone on external firewire 800 drive

Hello,
I have a 24" mid-2007 iMac 7,1 running Snow Leopard. I recently changed my set up to put a clean install of OS X 10.9.1 on a partition of an external SSD. I also moved the 10.6.8 start up system to a partition on the SSD. My internal iMac hard drive now has no system folder, only my data files. I have additional firewire drives for Time Machine, other data and media drives. Finally, I just bought a pair of 3TB drives that I partitioned into enough partitions to be able to clone both operating systems and all my data files for a rotating pair of offsite backups. All moving/cloning of drives was done with version 3.5.4 (Mavericks-compatible) of Carbon Copy Cloner.
I can boot from my external SSD (either Mavericks or Snow Leopard) fine and all external drives mount correctly in either case. After cloning all the partitions onto the backup drives, I tried to test the clones but I am not able to start up using either the Mavericks or the Snow Leopard clones when the backup external drive is connected via firewire 800. This is true whether I select the clone volumes in the Startup Disk preferences pane or hold down the option key during start up (note that the external drive with the clone partitions does not appear in the list of disk choices with the option key method). I get the "question mark in the folder" sign that the start up system is not being found.
I have changed the order in which the external drives are connected (normally the SSD is first in the chain), including trying when only the backup drive is connected directly to the iMac. I get the same result no matter what.
Curiously, the Mavericks and Snow Leopard boot clones start up via firewire 800 when the external backup drive is connected to my wife's 2009 13" Macbook Pro, indicating that the clones and the enclosure (an OWC Mercury Elite Pro quad interface, newer version with USB3) both support booting. Furthermore, if I connect the backup drive to my iMac using USB, the boot clones both work to start up the iMac.
This all points to an issue with the firewire bus failing to recognize the boot clones somehow during my iMac's start up process. I am rather puzzled about how to fix this.
I can get by booting via USB in an emergency but because my system is old, this is of course USB2 so its slow. If I had to use the clones to recover I'd rather be able to operate and restore at FW800 speeds.
If anyone has any ideas what might be going on, I'd appreciate hearing them.
Thanks in advance.
Greg

Did you ever get this resolved, Greg?

IMac won't recognize Maxtor OneTouch 2 Hard Drive

I've been using a new Maxtor hard drive to store video for use with iMovie. All was working fine and I was able to store and recall video several times from the drive. Then the iMac stopped recognizing the drive. I've downloaded and installed the newest driver from Maxtor, fixed permissions and deleted the two extensions as recommended by Maxtor on their website. System profiler recognizes something is connected to the Firewire, but can't recognize it - and it does not even show up when using disk utilities. The drive seems to spin up fine when I turn it on. Only thing I notice differently on the drive itself is that the blue one-touch button used to blink by alternating between the top half and bottom half. Now it blinks faster and does not alternate between top and bottom. I don't care about recovering the video that's on the drive - I can replace that. I just want to know if there's a fix - or if it's just a bad drive. Any suggestions?

Came home and my computer was off after leaving it
on. Rebooted and now the keyboard won't do anything,
the ext. hard drive won't start. I can't insert the
repair disk because the keyboard won't operate.
Hmmm, what do you think I should try?
hanks,
Bill
imac flat panel
Mac OS X (10.4)
If one of you finds a solution for this problem, please let me know. I have exactly the same problem
Hans
iMac intel Mac OS X (10.4.10) Boot Camp
MacBookPro Mac OS X (10.4.8)

External Firewire 800 Drive Shuts Down

I am using an external Other World Computing hard drive enclosure with a Seagate 2 TB Barracuda XT drive formatted as a single volume. The drive seems to be in proper working order and I haven't lost any data. However, every once in a while the drive power light will go off and the drive will go off line. Then it attempts to mount, but isn't able to.
I have experienced this behavior with 2 Seagate drives in different enclosures, so it doesn't seem to be a problem with the drive or enclosure itself. Could this be a problem with the Firewire 800 port on my Mac Pro?
Any help would be greatly appreciated!
-Michael

Do your external enclosures use an external Power Supply? You may be drawing too much power from the FireWire cable. This problem is much more common with unpowered USB drive enclosures that have limited ability to get power from USB.

Will aperture run off an external firewire 800 drive?

Hey All,
I have an iMac that has firewire 800 as its fastest port and my aperture library is getting too big to have on my maun hard drive. If I were to get an external enclosure will I be able to move my aperture library over and still have the same fluid workflow or am I going to get lag going over firewire 800?
Thanks
Ruwan

Adding to Williams advice:
You might consider leaving your Library on your system drive and moving most (or all) of your Images' Originals from inside your Library to an external drive. Aperture calls Originals stored outside your Library "Referenced Originals" and has robust tools for managing them. Read some of the posts here (and check the User Manual -- start here) and ask any questions you have should you choose this route.
As William said, FW800 with a good drive is usually fast enough, but keeping your Library on your system and storing your Images' Originals on an external drive will be faster. OTOH, it makes administering your Library and Originals more complex, and leaves you to back-up your Originals separately from your Library.

Bus Powered External Firewire (800) Drives and iPod?

I bought a WD Passport drive, and was pretty upset when i found out that the usb ports on my powerbook cannot power the drive. crap. can the firewire 800 port on my powerbook power these drives:
http://www.kanotechnologies.com/products/SF800-40.cfm
http://www.g-technology.com/Products/G-DRIVE-mini.cfm#Buy
I really want a bus powered drive. does anyone know if these will work with my 15" powerbook? one better than the other? oh, and i'm getting it to keep my itunes library on...so will my powerbook have any problem with reading the fw800 drive and the ipod in the fw400 port at the same time?

Well the second linked drive says it is bus powered and does not require a external power brick. Usually most of external 2.5 inch notebook drives (in a 2.5 enclosure) can be bus powered. The 3.5 inch ones are generally not bus powered.

My iMac won't recognize my external hard drive connected by FireWire 400

I have an external hard drive connected to my Intel-based iMac through a FireWire 400 cable. The drive doesn't come up on the desktop after turning on the hard drive power.
If I connect through the USB cable, it appears quickly on the desktop. Why isn't this working through FireWire? I had some trouble with this in Tiger as well, but was somehow able to get it to work.

The drive does not appear in Disk Utility.
And I don't think I'll be installing DiskWarrior until Leopards countless bugs are fixed, especially after reading THIS:
Alsoft: There are some DiskWarrior "compatibility issues" with Leopard
After previously stating "you can run the (current version of DiskWarrior under Leopard) knowing no harm will come to the hard drive or to your data," Alsoft has now posted a message to its Web site stating "there are some compatibility issues when running an installed copy of DiskWarrior 4.0 while started up from Mac OS X 10.5 Leopard. Alsoft currently recommends that you do not run DiskWarrior 4.0 while the computer is started from Mac OS X 10.5 Leopard."
http://www.macfixit.com/article.php?story=20071026153956503

IMac won't recognize my external hard drive, and cannot backup onto it.

Time machine fault with Western Digital "my book" external drive
In trying to select a backup disc I follow these steps:
I have the drop down panel from Time machine preferences which asks me to select "time machine" by clicking on the "use for backup" button.
When I do this message appears,
"You do not have appropriate access privileges to save file “.0016cb83cfe5” in folder “Time Machine Backups”.
How do I set up "My book" to start backing up again? It was originally installed and backed everything up without a problem, but although the icon still appears on my desktop time machine will not backup.
Hope there is a simple explanation folks!

Welcome to Discussions compuvic!
I believe you're experiencing a problem that happened with the 10.5.6 update. There is a workaround found by V.K in [this thread|http://discussions.apple.com/message.jspa?messageID=8668572#8668572]. If you follow the instrux it should work.
/p

Recommendable external portable Firewire 800 drives?

Anybody have any recommendations for Firewire 800 portable hard drives to use for extra storage with a MBP (with cost and capacity)?
Thanks!
doug

Hi
I've just purchased a Western Digital Mybook Pro 500 gig. It only cost me £180 and Its works excellently with large DV files and heavy graphics. File transfer rate is rapid using Firewire 800! They even have a 1TB model that's RAID 1/0 capable. Check out:
http://www.westerndigital.com/en/products/Products.asp?DriveID=270
For the 1TB version
http://www.westerndigital.com/en/products/Products.asp?DriveID=242
For the 500 gig version
http://www.komplett.co.uk/k/ki.asp?sku=322613&cks=***&assoc=8070E5CC-28EB-433D-8 345-6176BFE08D72
For the cheapest place to purchase the 500 gig
Also just type 'Cheap external Firewire 800 drive' into google and you'll get a heap of prices from places like 'price grabber' and 'compare prices'
Hope its useful

Logic Studio - Presonus Firepod w/ Firewire 800 Drive (Firewire Issues?)

Hi all,
Having a problem on this end. I had picked up a Lacie 160gig bus-powered external HD. I had wanted to run this over Firewire 800, but it's not working.
Whenever I open the HD, my audio cuts out and remains cut until I reboot the system. The Firepod is running off Firewire 400, still get a connection (blue light), but no sound.
The problem only exhibits itself when I open up the HD.
Anyone else having issues running an external audio interface via Firewire 400 and an external Firewire 800 drive?
Thanks,
-B

Have a FW400 Focusrite Saffire Pro and a WD HD on the FW800. They wont work together on the built-in FW400 and FW800 ports of the MBP. Had to get a FW400 Expresscard and put the Saffire on that and the HD on the built-in FW800 port to get them to work together. Also please notice how professional using a lot of capital letter acronyms makes me seem.

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I have a Power Mac G4 (2004) and want to transfer all my files to a new MacBook Pro 15.4". Can this be done thru firewire cable or do I have to transfer to an external Firewire 800 hard drive first?

I have a Power Mac G4 (2004) and want to transfer all my files to a new MacBook Pro 15.4". Can this be done thru firewire cable or do I have to transfer to an external Firewire 800 hard drive first?

Do it with a Firewire cable (buy a 800/400 adapter if you need it) - the USB transfer takes a much longer time.
Start up your old PowerMac G4 holding down the "T" key, for target disk mode.
On your new MacBook Pro open "Migration Assistant" in your utilities folder.
Connect the 2 computers by firewire cable and follow the prompts in Migration Assistant.

Imac won't recognize mac external firewire 800 drive

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