Previous 1 2 3 4 5 Next 59 Replies Latest reply: Mar 2, 2013 3:48 PM by Dr. Benway Go to original post
  • rkaufmann87 Level 9 (55,283 points)

    Dr. Benway wrote:

     

    I'm curious to know why you don't recommend using an external disk with greater than 750 GB capacity to boot an Imac from. I have borrowed a 3 TB external drive from a co-worker in order to try running my Imac from it before I invest in a new drive myself. There is about 750 GB of free space on the drive. Can I install the OS without formatting the drive first?

    If you only have 750GB of data on your 3TB internal HD that means when you create a bootable clone it will only clone 750GB of data. Therefore buying a 3GB EHD would waste over 2.25TB of usable space.

  • Dr. Benway Level 1 (0 points)

    So a larger drive has no effect on performance, it just has more capacity than would be used. That makes sense. I'm not trying to clone the internal drive though because it has failed. I simply want to run the machine from an external drive and before I purchase one, I'd first like to test it using a drive that has some information stored on it. Can I install the OS without formatting the drive? Thanks for your help.

  • MichelPM Level 6 (11,428 points)

    No,

    You will need to format the drive before installing OS X.

  • rkaufmann87 Level 9 (55,283 points)

    Dr. Benway wrote:

     

    So a larger drive has no effect on performance, it just has more capacity than would be used. That makes sense. I'm not trying to clone the internal drive though because it has failed. I simply want to run the machine from an external drive and before I purchase one, I'd first like to test it using a drive that has some information stored on it. Can I install the OS without formatting the drive? Thanks for your help.

    None.

  • Dr. Benway Level 1 (0 points)

    Thanks for clarifying that.

  • Dr. Benway Level 1 (0 points)

    Thanks again.

  • rkaufmann87 Level 9 (55,283 points)

    Your welcome, where are you in your process of buying and moving forward. In other words do you feel that you have enough information now?

  • Dr. Benway Level 1 (0 points)

    Thanks for asking. I certainly have enough information, thanks to everyone who has participated in this discussion, but I haven't made a decision yet. I'm attracted to the Imac because of its performance and affordability but not for the fact that it can't be upgraded post-purchase or opened if a piece of its hardware should fail. I had thought that I could save some money by purchasing the Mini but, after upgrading the ram and purchasing a decent monitor, I'd be spending about the same money as I would on an Imac. For the time being, I'd like to try running my '06 Imac from an external drive. Hopefully the FW400 connection will be adequate until I come to a decision on a new purchase.

  • rkaufmann87 Level 9 (55,283 points)

    OK, we'll beat of luck and I hope the 06 provides more years of enjoyment.

  • Dr. Benway Level 1 (0 points)

    Thanks again.

  • Dr. Benway Level 1 (0 points)

    I'm thinking of buying this drive [http://eshop.macsales.com/item/OWC/MAU4S7500G16/] to boot my 2006 Imac from. Does it look like a good drive to you?

  • MichelPM Level 6 (11,428 points)

    This is a very good drive.

    If you are comfortable that 500 GB will be a large enough drive to work for you for quite awhile.

    OWC's Mercury Pro drives are very good and well built drives.

    If you feel confident and comfortable about this drive, go for it and purchase it.

    Good Luck!

     

  • Dr. Benway Level 1 (0 points)

    Thanks for your reply. I really don't know much about external drives but was told on another forum that OWC made reputable ones. $105 for a 500GB drive seems like a great price and I think 500GB will be enough space. I did a quick search and found that OS 10.4.1 takes up about 3GB of space as does CS3. I only have about 150GB of additional data.

  • MichelPM Level 6 (11,428 points)

    So, you'll be set for HD space for awhile.

    Great!

    This drive should work well for you!

     

  • Dr. Benway Level 1 (0 points)

    I do notice that the cache differs between the 500gb (16mb cache) and the 1tb (32mb cache) drive. Is that worth taking into account?