External hard drive not recognised in start up options

Hi! I'm struggling to get to grips with creating a bootable external drive - any advice would be very welcome!
I've recently bought a LaCie Triple Interface 300GB external drive to use for backup storage and to use as a back up bootable drive should disaster strike. It's connected to my Mac via the FireWire 800 port.
I've backed up my documents and cloned system folders and apps using Intego Backup, but the drive is not recognised in the start up options of the system preferences, nor does it appear as a bootable drive when I option-restart.
Do I need to format and partition the drive before it will be recognised as a bootable drive? (I haven't done so) Or have I just cloned the wrong thing?! I'm not entirely sure what I need to clone to be able to boot and back up from it. Should I clone the entire HD?
Or does it sound like something else entirely?
Can anyone help??
1.8 GHz PowerPC G5 6.5MB RAM Mac OS X (10.2.x)

I'm not familar with Intego Backup. Get Carbon Copy Cloner and use it to clone your entire drive, user files and all.Be sure to check the "make bootable" box before you start the process. Could be that Intego isn't capable of making a drive bootable.

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External Hard Drives not recognised

I have a few different external hard drives on which I have stored photos and movies etc. I used to keep them attached and on all the time, but decided some time back it might be better to leave them off until required. I now have OSX 10.5.8 on my Mac Pro and Macbook Pro and neither will recognise my external hard drives. 1 is a LaCie and the other a iOmega.
Have tried a reboot on both machines with the drives switch on, and off, disconnected and re-connected cables, nothing works, they just don't appear!
Any ideas?
Thanks
Douglas

Maybe the following will help....
Thought you could use this info about getting FireWire to work!
First, you should always Repair Permissions in Disk Utility before and after any update; I would do that now. If you installed your update with FireWire plugged in, your Mac may not recognize it anymore.
Try resetting your FireWire ports by disconnecting all FW devices, shut down your Mac and unplug it from AC power (wall socket) for 30 minutes. plug it back in and try FW.
If that didn't work, download the combo update from this site (yours may be corrupt), not Software Update, disconnect all firewire + USB devices except keyboard + mouse, Repair Permissions, re-install update, Repair Permissions again + try.
If that still didn't get it Zap the PRAM. While restarting Mac hold down the following key combo Command-Option-P-R. Keep holding those keys down till you hear the second start-up chime, then release.
For those of you with Macs that are not PowerBooks or iBooks, a bad internal PRAM battery can cause FireWire to not be recognized, so make sure it's good! Also, here is Apple KB HT1317 on getting FireWire to work.
Here's another Fw Faq.
DALE

Hp external hard drive not recognised hp by pc

I have had my HP PC for some time and had never completed a back up so purchased a HP external harddrive. Part-way through the backup process (an hour or so later) the pc displayed a "backup failed" message.
I have since attempted to connect the external HP 500GB passport harddrive to my HP pc and also to other PC's and Laptops in the house, however, eventhough the light comes on the external hardrive once connected to a PC it is not indicating that it is attached the the computer and the drive is not discoverabale.
The external harddrive is useless in its current state and can not be used for anything, and I have yet to successfully complete a backup of my PC. Do I need to buy another external hardrive and start again? and what can I do with the original harddrive so it is recognised by a PC?

I understand your HP external hard drive is not working on any PC you connect it to. If I understand correctly, the drive is not listed in Computer where other drives are listed.
With the drive connected, go to Start>right-click computer>manage. Select disk management on the left of the new window that opens. Disk management will have a list of detected drives and a visual diagram of the detected drives as well. If possible, please upload a screenshot of disk management. Screenshots can be added by clicking the photo icon and browsing for it on the PC.
What model is the external HDD?
Has a different USB cable been tried? The cable might be providing a good connection for power, but not necessarily for the data connection as these two functions rely on different pins. Just don't want to overlook something as simple as a faulty cable. If you don't have one to try with, then don't buy one just yet as I would like to see what disk management shows.
I'll keep an eye out for your reply.
↙-----------How do I give Kudos?| How do I mark a post as Solved? ----------------↓

External Hard Drive not recognised on Intel but is on G4 iBook

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Well, this is embarrassing. A suggestion from an older thread on Macrumors.com called "Hard Drive does not appear in Finder / Desktop", solved this problem. Simply drag the missing drive icon from the desktop to Finder! Perseverance and different search wording AND reading a lot of stuff pays off.
If other's problem is not solved with this fix, you might benefit from this 10.5-based thread. They also mention an Apple 10.5 fix. Both URL's below.
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Max
http://forums.macrumors.com/archive/index.php/t-209905.html
http://support.apple.com/kb/TA25203?viewlocale=en_US

External Hard Drive not recognised after horrible crash and reformat.

There's yet another problem with my MBP.
First of all this happened: http://discussions.apple.com/thread.jspa?threadID=969838&tstart=0
Since I got it fixed I bought a 500GB Freecom external Hard-drive and used it to back up all my stuff. It was a case of plugging it into the USB port and it mounted on the desktop. I've had it for about a month.
I've only just got my MBP back from getting the keyboard replaced, then on Saturday night it crashed. And kept crashing. Then it wouldn't boot. Then it crashed when booting. Then it took me to a command prompt. I reset all the parameters laid out in the troubleshooting guide. I managed to boot in safe mode, but my Freecom drive wouldn't mount anymore. But it kept crashing and crashing. I finally managed to boot from the installation CD and I reformatted the drive and installed OS X (Tiger) afresh. But now my Freecom drive won't show up on the desktop at all!
I ran a Hard Ware test after the reformat, and the code 4MEM/2/40000000 came up, then again, 1FCA8574, then 41530574.
When I had the Freecom plugged in it would show in System profiler but not mounted on the desktop.
What is wrong? I am really annoyed because my Warranty ran out yesterday and I'm only after getting it back from Apple to get the keyboard replaced!
Please help!
(PS - I have Leopard on its way to me, would installing this help?)

(PS - I have Leopard on its way to me, would installing this help?)
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External hard drive not recognised after using disk utility to format

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Try http://pondini.org/OSX/DU1.html
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?Puzzled?

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http://osxfuse.github.io
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Hard drives can fail at any time... but, as I said, it could be that the SATA controller in the enclosure has gone belly-up. You should be able to take the drive to a standard computer repair shop and see if they can remove the drive from the enclosure, put it in a dock and see if the drive is mountable. It's a 50/50 chance but it shouldn't cost much and should be the first step before taking the unit into a more expensive data recovery facility.
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Why is my External Hard Drive not showing in Aperture 3.6 Import?

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http://Pondini.org/OSX/DU.html

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External hard drive not recognised in start up options

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