External FW800 drives do not power up/down

When I was running 10.4.10 on my PowerBook, my drives would power up/down whenever turning the PowerBook on/off.
I just got a MacBook Pro 17" with Leopard and the drives work, but I have to manually power them on/off.
Is this normal or is there some setting that I am missing?
Thanks.

Make sure the integrated IDE controllers you are trying to use are enabled in the BIOS. You will want to put the optical drive on one IDE controller and the hard drive on the other. i.e. don't have them both connected on a single cable. Check the settings - both should be on master or cable select.

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External hard drive will not power up on my macbook pro

I have a 120GB external hard drive that uses a USB port and it use to power up and work but now it just makes a clicking noise and nothing is recognized. the hard drive works on every other computer even pc's. the light on the hard drive is on but does not power up. Can someone help? thanks

hello. thanks for the help. It did come with a usb cable that had two plugs on one end. I never used both because the cord was not long enough to attach to both. I didnt have this problem at first. It would start right up but now it will not start at all. It does have an option for external power supply. Do you think I messed up the usb ports in the computer? thanks again for your help.

External Hard Drive will not power up

I've had a Toshiba External HDD for 2 years now and it was working perfectly. It has a blue light which comes up when powered up. Now it has suddenly stopped working.
When I connect it to the AC Adapter, there is no light, no power. The AC Adapter is a DURA MICRO INC Adapter Model DM5127. The light on the Adapter itself comes on
when I plug it in to the power but the moment I plug in the other end to the HDD, even that light goes off. I wonder if anyone else has experienced this . Could it be
a problem with the Adapter itself?
Any tips will be gratefully received as how I could go about resolving this. Almost all my data is in the HDD.

Hello, I helped install several external hard drives which also use that same model of Dura Micro power supply.
Unfortunately for 2 of these power supplies, they didn't seem very dura-ble, for they each developed a similar problem. The status LED on the hard drive would light up and stay on as normal, but the hard drives themselves would no longer power up. I tried a new adapter of the same model and the drive came back to life.
My guess is it may be your power supply, if you purchase replacements I'd get more than one.

External hard drive will not power on

I have a PH3200U-1E3S and it will not power up, every other push of the power button the light flashes once. I dont know what to do, any suggestions? The unit is not very old and it has all off our pictures on it.
please help,
Thanks Tony

If it is out of warranty, you might try opening it up and looking for a fuse inside. If you find one and it is blown, you should easily be able to find a replacement.

External hard drive does not shut down

Hello, When my mini mac goes to sleep my samsung external hard drive does not shut down or dismount properly. when i wake computer i have a error message stating improperly ejected hard drive. It also does not reconize HD until I disconnect and reconnet??? PLEASE HELP Thank you

My Mini was doing the same thing until I reset the PRAM. With four external drives. They would stop inadvertently with an "improperly ejected" error. Granted two of the drives went bad (6 and 7 years old) but a brand spanking new Seagate and a 3 year old Hitachi drive doing the same. Haven't seen the error since resetting the PRAM.
If you don't know how to do that, Reboot while holding the Cmd+Opt+P+R keys until your hear the startup chime three times and then release the keys.

External hard drive won't power back up when iMac wakes from sleep

I have the external hard drive connected via USB. I always put my iMac to sleep before going to bed and I wake it up when I come home from work. Except that when I do, the external hard drive doesn't power up. It still shows in Finder, but clicking on it's folders just opens them up as if they were empty. There's no access noise and the drive can't be ejected.I have to switch it's power off and turn it back on for it to spin back up.
At first I thought it was because I had Energy Saver set to power down the drives whenever possible, which works just fine when it's on, the drive powers on and off as needed just as long as the iMac doesn't go to sleep. I turned it off just to make sure and it made no difference. As soon as the iMac goes to sleep and the drives powers down, it will not come back on without a power cycle once the iMac wakes.
I've used this drive in an old Macbook for years without having this problem. The only difference is that the Macbook was on 10.6.8. I was thinking about buying a 4 bay USB enclosure and filling it up with hard drives, but I'm not about to do that if every time I put the iMac to sleep, the whole thing will not power back on without a power cycle.
Any help would be much appreciated.

Not sure if you managed to get this issue resolved yet Marcus, but I too have a similar problem:
Currently I'm upgrading from Leopard to Lion (via Snow Leopard) on both an iMac and MacBook Pro (both Intel), but before I proceed with the OSX upgrade I wanted to back everything up. Thus far I have partitioned an external firewire drive (G Drive - one that is bootable), and cloned each machine using Carbon Copy Cloner to it's own partition (both GUID). There is plenty of space left over on each partition.
The issue - I can boot the OS X from the external drive on the MacBook Pro but not on the iMac.
When I restart and hold down Option on the iMac the only drive that appears is the HDD, not the other two selectable drives that are visible if I boot up on the MacBook Pro. On the iMac in System Prefs > Startup Disc I can see all 3 drives but when I select it and restart, the machine freezes on the grey loading screen and goes no further.
Not that it should make a difference, but there is a 3rd partition on the external drive that is currently empty (for extra storage).
Any help is greatly appreciated - I can't find any relevant answers elsewhere. Thanks,
Dan

External Hard Drive does not mount

My 2TB external hard drive does not mount and I cannot get it to. Have tried turning the hard drive off and then back on. No response. Any thoughts as to how I can get it to be recognized?

You can try doing a SMC reset, if it doesn't work the first time it's totally OK to reset the SMC several times.
SMC RESET
Shut down the computer.
Unplug the computer's power cord and all peripherals.
Press and hold the power button for 5 seconds.
Release the power button.
Attach the computers power cable.
Press the power button to turn on the computer.
PRAM RESET
Shut down the computer.
Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys.

I recently updated my Mid 2007 iMac with the latest OS 10.8.5 now my external hard drives will not show up. They show up when I boot them up on a machine running and earlier OS. Is there a fix for this?

I recently updated my 20-inch, Mid 2007 iMac with the latest OS 10.8.5 now my external hard drives will not show up. They show up when I boot them up on a machine running and earlier OS. Is there a fix for this?

Can you see them in Disk Utility?
If so, can you select and Mount them?
If not, disconnect them, reset the iMac's SMC and then reconnect them.
Intel-based Macs: 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.
If you still can not see them, connect them back up to the iMac running the older OS, open Disk Utility and look to see how they are partitioned and formatted.

External FW800 drive as main drive...Possible?

I was wondering if it is possible to run your computer off of an external fw800 drive, all the time. that should give your computer a huge jump in speed, right??
If it is possible, could you just set up a Mirror RAID configuration with 2 external drives thus backing everything up?
Dual 2.5 G5 Mac OS X (10.4.6) 4.5 gigs ram

Hi Raynor;
Mirror RAID is not a good solution for backup. What it does is it provides protection from the failure of a disk.
The reason I say it is a good backup solution is say you have an application that has a bunch of files opened. The application aborts and takes the files with it when it goes down. How can you recover? You can because the application will take the files off both disks because they are mirrored.
Hence even if disks are mirrored, it is still necessary to back up the data from the mirrored RAID array.
Allan

External hard drive is not working on airport time capsule even after 7.7.2 firmware update.

External hard drive is not working on airport time capsule even after 7.7.2 firmware update.
I have the latest Airpor Time capsule 2gb. I specifically bought it so that I could have an external hardrive set up to wirelessly house my itunes library and movies. When i connect the drive, all i get is that the disk needs to be repaired.
the drive can works fine when connected to the macbook pro and I have run the verify and repair features in disk utility. I have also reset the airport timecapsule as well following these changes and still no change.
The 7.7.2 update says that it addressed the usb issue of not showing the drives but there are still problems as I cannot get it to appear.
Please help.
Thanks

How is the hard drive formatted?
Have you tried using a powered USB hub with the drive when it is connected to the Time Capsule?
(The USB port on the Time Capsule is borderline as far as power is concerned....you may need to use a powered hub.....even if the hard drive has its own power supply)
If the drive is formatted correctly....and....it has ample power, it will "show up" when you open AirPort Utility, click Edit, then click the Disks tab at the top of the next window.
In the example below, my Time Capsule drive is named "Backups" and another drive named "WD Drive" is connected to the USB port on the Time Capsule.
You should see the name of your Time Capsule drive (named "Data" unless you have changed the name) and the name of the USB drive if you perform the same check.
What do you see?

External hard drive is not showing up when attached by USB

My WD External Hard drive is not showing up on my iMac when i connect it by USB

Hi, does that mean it shows up some other way of connecting it?
Is it Bus powered or does it have AC power?

After upgrading to osx 10.9.3, my external hard drive was not able to mount, but it can be mounted without issue in osx 10.6, how do I solve it? it was formatted by disk utility.

Hi
After upgrading to osx 10.9.3, my external hard drive was not able to mount, but it can be mounted without issue in osx 10.6, how do I solve it? it was formatted by disk utility.
Thanks
PT

From the menu bar, select
 ▹ System Preferences ▹ Energy Saver ▹ Power Adapter
and uncheck the box labeled Put the hard disk(s) to sleep when possible, if it's checked.
If the drive has more than one interface (USB, FireWire, Thunderbolt, eSATA), try one of the other interfaces.
Check that the data cable is securely inserted at both ends.
Try a different cable.
If you're connecting the drive through a hub, connect it directly to a built-in port on the Mac.
If you're connecting it directly, try a different port.
Disconnect all other devices on the bus, or as many as possible.
Test the drive with another Mac. Test another drive with this Mac.
If the drive is bus-powered, but has an AC adapter, connect the adapter.
Start up in Recovery mode and launch Disk Utility. Is the drive recognized?
Start up in Safe Mode and test.
Reset the NVRAM.
Reset the System Management Controller.
If the drive doesn't work under any of the above conditions, and if another drive does work with the same Mac, then the drive has failed. You may be able to salvage the mechanism by removing it from the enclosure and installing it in another one, or in a drive dock.

My external hard drive is not working on my mac.

I have tried all options available such as going on finder and making my hard drives visible and disk utilities

Basically my external hard drive would not eject so i force quit it and the hard drive does not come up at all anywhere on my mac pro OS X version 10.9.4 and it isn't visible in disk utilities no and it doesn't say format either and i have tried it on a windows computer it does not show on their either. the format is Fatdos i think so i can use it on windows and mac and i cant see anything in system reports and yes it is connect by a USB. also it isn't making any noises either

My external hard drive is not recognised on my mac book pro

my external hard drive is not recognised on my mac book pro

Hello all -
similar situation. Unplugged external hard drive and all to take the laptop on a trip. On return, I plugged everything back in and keep getting this message:
Time Machine couldn’t complete the backup to “Iomega_Ext_Drive”.
Files can’t be copied onto the backup disk because it appears to be read-only.
You may need to repair or reformat the disk using Disk Utility. If the disk can’t be repaired, you must use a different disk for backups. Open Time Machine preferences to select a different backup disk.
open time machine preferences. -
I tried this and tried "repair" but that didn't work and I still get this message. Any advice? thanks

My external hard drive is not recognized by my computer.

My external hard drive is not recognized by my computer. I used it earlier and it was fine however my computer froze and I unplugged my hard drive without properly ejecting it. Now when I plug it in nothing pops up. I've tried on three different computers and no luck. I hope this is fixable! Please help.

Care to share which OS you are using?
Repair permissions & restart your computer.
Zap the PRAM

External FW800 drives do not power up/down

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