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Hopefully in the next month or so the new iMacs will be on sale and I intend to purchase one.

I have an older PC that is running XP. I understand that, with Parallels, I will be able to run XP on an iMac.

Would it be possible to run XP on the iMac with XP on an external hard drive that is connected to the iMac via USB 2?

Felix
 

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Not true. You can run windows on an external with Boot Camp. It takes some work, but it can be done.
I can also perform heart bypass surgery, but it takes some work and time.

Yes, given enough time and resources, it is possible, but seeing how you have to hack the Windows install files, and disconnect the internal hard drive, it's fair to say that it is WAY more trouble than it is worth for most people.
 

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BTW... Not only can you run your Parallels Virtual Machine on a external drive, for better performance you should. Running your vm on a separate drive dramatically increases performance as their is less thrashing for the disk on the main system.
 

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I don't use Parrallels (I don't really care for it), but I do use VmWare Fusion. I would imagine that Parrallels works the same way , when you create a new virtual machine (ie: not boot camp), you can tell it the location you wish to stash the files, so in this case you could create a folder on your external specifically for your virtual machine(s).

Keep in mind however that unless the external is something like FireWire 800, SAS, or eSATA the performance will seem to be worse than if you just ran it off the internal drive.

But ya, during creation Parrallels like VmWare should as you where you wish to store the VM (usually having a folder already selected for you by default). I've done it a couple times for linux installations that I was rarely going to use, but something like a regular boot of windows XP, I either had it as boot camp loaded into VmWare or as a virtual installation on my internal drive.
 

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BTW... Not only can you run your Parallels Virtual Machine on a external drive, for better performance you should. Running your vm on a separate drive dramatically increases performance as their is less thrashing for the disk on the main system.
unless the external drive's connection speed is drastically less than your internal. a USB 2.0 external for example wouldn't be nearly as fast as just running it off your internal SATA drive even if on the same volume.

Otherwise, I'd agree with you, on an external, or at the least a secondary harddrive that is not the primary system's. Same goes for anything that needs regular HDD access such as your photoshop scratch disk and such. (FireWire 400 as odd as it sounds would be better than a USB 2.0 external, because the latency is much better for firewire, thus less traffic jam on the up and down stream, or waiting for a stream to start)
 
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