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  1. #1
    Replacing hard drive?
    royalpei's Avatar
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    Replacing hard drive?
    Does every imac need a different hard drive when replacing or are they pretty much the same?

  2. #2
    Replacing hard drive?
    pm-r's Avatar
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    Quote Originally Posted by royalpei View Post
    Does every imac need a different hard drive when replacing or are they pretty much the same?

    Pretty vague question and you may want to repost including the details of what you are wanting to do and why.


    - Patrick
    ======

  3. #3
    Replacing hard drive?
    Raz0rEdge's Avatar
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    Each iMac obviously need different drives, you can hardly use the same drive in EVERY iMac.

    As Patrick said, how about actually telling us what you are trying to do?
    --
    Regards
    ...Ashwin


  4. #4
    Replacing hard drive?
    pm-r's Avatar
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    Maybe start here:
    Drives & Storage
    Mac External and Internal Drives, Enclosures and More!

    and checkout your various options here:
    My Upgrades
    Upgrades Guaranteed to work with your Mac by OWC

    Maybe some of the info available there may give you a better idea as to what's available and the reasons for all the options and why.



    - Patrick
    ======

  5. #5
    Replacing hard drive?
    chscag's Avatar
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    Quote Originally Posted by royalpei View Post
    Does every imac need a different hard drive when replacing or are they pretty much the same?
    The 27" models (yours) use a standard 7200 RPM SATA drive while the 21.5" models used a smaller 5400 RPM SATA drive.

    Newer models since 2012 also have an option for a Fusion drive (combination SSD and spinning drive).

    What year is your iMac and how large a drive is now installed?

  6. #6
    Replacing hard drive?
    pm-r's Avatar
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    The 27" models (yours) use a standard 7200 RPM SATA drive while the 21.5" models used a smaller 5400 RPM SATA drive.

    Hmmm...??? Both those different speed SATA drives have always been the same size (3 1/2") in my experience Charlie... or have I overlooked something??? Or maybe it's the virus bug I've been fighting off for almost a month now and it's affecting my brain...


    - Patrick
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  7. #7
    Replacing hard drive?
    Lifeisabeach's Avatar
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    Quote Originally Posted by pm-r View Post
    Hmmm...??? Both those different speed SATA drives have always been the same size (3 1/2") in my experience Charlie... or have I overlooked something??? Or maybe it's the virus bug I've been fighting off for almost a month now and it's affecting my brain...


    - Patrick
    ======
    I think he phrased it awkwardly. It should have been "slower", not "smaller".

    Please verify and include the exact model/year of your Mac and OS X version number (available from "About This Mac", then "More Info" on the Apple menu).
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  8. #8
    Replacing hard drive?
    chscag's Avatar
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    Quote Originally Posted by Lifeisabeach View Post
    I think he phrased it awkwardly. It should have been "slower", not "smaller".
    Actually it's both smaller and slower. At one time Apple was using a 3.5" 5400 RPM drive in the 21.5" iMacs. The 27" models had the 5" 7200 RPM drive installed. I believe her iMac is an older 27" model, but until we find out what she's trying to do, the answer will depend.

  9. #9
    Replacing hard drive?
    chscag's Avatar
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    Hmmm...??? Both those different speed SATA drives have always been the same size (3 1/2") in my experience
    I believe the older 27" iMacs had a 5" 7200 RPM drive. I'm not sure when Apple switched to 3.5" drives on all models. I'll have to look that up.

  10. #10
    Replacing hard drive?
    chscag's Avatar
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    Patrick:

    I can't find it now. EveryMac shows that most of the older models had a 7200 RPM drive and it appears that the 21.5" models they show likewise came with 7200 RPM drives. I'm not sure that is correct for all the models though. I know my 2011 21.5" iMac had a 7200 RPM drive but I believe some later models had only a 5400 RPM drive. The faster larger 7200 RPM drives were optional.

    I don't know where I saw the 5" vs 3.5". I could possibly be thinking of the older PPC iMacs?

  11. #11
    Replacing hard drive?
    Lifeisabeach's Avatar
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    Quote Originally Posted by chscag View Post
    I believe the older 27" iMacs had a 5" 7200 RPM drive. I'm not sure when Apple switched to 3.5" drives on all models. I'll have to look that up.
    A 5" drive? Or do you mean 5.25" drive. I've never seen a 5.25" drive. Floppy disks, yes, 5.25". I can only speak for the 2010 iMacs but both the 27" and 21.5" iMacs in 2010 came with 3.5" desktop drives.

    EveryMac.com shows that starting with 2012, the 21.5" iMac came with a 2.5" HDD while the 27" came with a 3.5" HDD.

    Please verify and include the exact model/year of your Mac and OS X version number (available from "About This Mac", then "More Info" on the Apple menu).
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  12. #12
    Replacing hard drive?
    chscag's Avatar
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    Yeah, I screwed up what I remembered what was in the older iMacs. Turns out you're correct. The 2012 21.5" iMac did come with a slower smaller drive than the 27" models of the same year. The larger 5.25" drives were used on the older PPC iMacs.

    An older iMac that I owned was a 2013 27" and it had a 3.5" 7200 RPM desktop drive. My current iMac 27" 2017 has an Apple SSD. I have no idea what size it is or who even supplies them for Apple.

  13. #13
    Replacing hard drive?
    Lifeisabeach's Avatar
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    Quote Originally Posted by chscag View Post
    Yeah, I screwed up what I remembered what was in the older iMacs. Turns out you're correct. The 2012 21.5" iMac did come with a slower smaller drive than the 27" models of the same year. The larger 5.25" drives were used on the older PPC iMacs.

    An older iMac that I owned was a 2013 27" and it had a 3.5" 7200 RPM desktop drive. My current iMac 27" 2017 has an Apple SSD. I have no idea what size it is or who even supplies them for Apple.
    Heh... a 5.25" HDD... must have been a monster! Amazing to think how everything has shrunk AND gotten exponentially faster. The SSDs that Apple uses now in at least most of their line are the size of a RAM module, and insanely fast compared to a 2.5" SATA SSD. My MBA's SSD is double the speed of the 2.5" SSDs I have on hand.

    Please verify and include the exact model/year of your Mac and OS X version number (available from "About This Mac", then "More Info" on the Apple menu).
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  14. #14
    Replacing hard drive?
    chscag's Avatar
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    The first Windows desktop machine I built back in the early 90s had two bays that could each hold a 5.25" hard drive. Later on when Linux was becoming popular I ran Windows on one drive and Ubuntu Linux on the other. The desktop chassis was a monster compared to today's slick machines. I had a Sony Trinitron 14" CRT monitor attached to it. Both the desktop and monitor took up half my executive desk. I'm still using the same desk with the Mac and have plenty of space left over.

    Times have changed.

  15. #15
    Replacing hard drive?
    Lifeisabeach's Avatar
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    Quote Originally Posted by chscag View Post
    The first Windows desktop machine I built back in the early 90s had two bays that could each hold a 5.25" hard drive. Later on when Linux was becoming popular I ran Windows on one drive and Ubuntu Linux on the other. The desktop chassis was a monster compared to today's slick machines. I had a Sony Trinitron 14" CRT monitor attached to it. Both the desktop and monitor took up half my executive desk. I'm still using the same desk with the Mac and have plenty of space left over.

    Times have changed.
    You know, it's entirely possible that the drives I used back when I built my Windows PCs were 5.25" drives. That is the dimension of the drive bays and for the CD drives. It's been so long that I don't recall more specifically anymore. I used to have a Sony Trinitron myself. GREAT monitor, although they had a horizontal line in them inherent to their screen tech that I could never quite forget was there.

    Please verify and include the exact model/year of your Mac and OS X version number (available from "About This Mac", then "More Info" on the Apple menu).
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