Probably. First off, they would need to be the same sort of interface. Secondly, computer companies often have proprietary enclosures around the hard drives- kind of like a bracket. You can usually swap them if the hard drives have the same interface and are the same physical size.
Only if you have a Blu-Ray compatible hard drive
A CD ROM drive cannot read a DVD. So it is not possible to use a CD ROM as a DVD ROM. A DVD ROM drive can work with a CD though.
You can use a USB DVD Drive.
No... but you could just go to dell's site to get an external disc drive it plugs in to the usb port
There's no way you can install the CD / DVD drive from a Dell laptop in an iBook. The hard drive should be possible, as long as they are both IDE drives.
Not necessarily. You can have a CD/DVD reading drive that does not write.
Use an external DVD/ CD drive
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A CD drive cannot use a DVD. They are different systems.
A CD-R or CD-RW or DVD-R or DVD-RW will do.
You will need to save the pictures on a flash drive, CD, or DVD, in order to load them on an iMac.