Can I use an external hard drive to run a program, like Adobe Photoshop Elements, or Musicmatch Jukebox?
Answer:
Most defintely you can do this with any program. Actually that is recommended because of the amount space those programs use
Yes change the file location to the external hdd when you are installing the software.
An external HDD will be slower than an internal HDD in general. If your computer and external hard drive have an eSATA connector it should be the same speed as an internal drive.
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