Install OS after new SSD fitted to iMac

Discussion in 'Mac Desktops' started by joham, Nov 12, 2017.

  1. joham

    joham New Member

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    I have just fitted a new SSD to my older iMac7,1 (2.4 Duo 1GB) and have a blank screen on start-up with a flashing question-mark in a file folder showing.
    Have tried Control-R on start-up with the same result.
    Next I inserted the Snow Leopard Install disk and got the message: "you need to restart the computer".
    On restart I get a blank screen & the dvd drive seems to run continuously.
    Next I inserted my Time Machine back-up HD and restarted- result: a slower flashing Question mark-file symbol.
    Dead end!!
    The SSD install instructions say to format the new drive but I can't find instructions for same.
    I have a MacBook Air that may be useful.
    Thanks for any help!!
     
    joham, Nov 12, 2017
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  2. joham

    Spawn_Dooley Moderator

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    Hi, what OS version is on your iMac?

    Have you tried all of the startup keyboard shortcuts?

    How to reinstall macOS
     
    Spawn_Dooley, Nov 12, 2017
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  3. joham

    joham New Member

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    Thx for your response Spawn_Dooley.
    Not sure now what OS but it's an oldie- the iMac is a 2007 version. I'm told this system can only go up to El Capitan.
    Have tried the shortcuts you list without success.
    there is nothing on the SDD as it's brand new.
    I still have the old HDD which is still operable.
    It's got me stumped.
     
    joham, Nov 12, 2017
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  4. joham

    Spawn_Dooley Moderator

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    Do you have a Firewire cable? You might be able to connect the 2 macs & use. Target Disc Mode to mount your iMac's HD onto the MBA's desktop then you would be able to format the drive using Disk Utility on the MBA.

    https://support.apple.com/en-au/HT201462

    It appears that as the SSD is brand spankers, the recovery partition is missing for the meantime.

    Your iMac likely originally shipped with Mac OS Lion 10.4. Once the MBA formats & partitions the SSD in the iMac then you can try booting the iMac from the Snow Leopard disk ... if you've purchased that disk from eBay or the like, it needs to be the Full Universal Install version not the grey disc that used to come with Macs.
     
    Spawn_Dooley, Nov 12, 2017
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