Please visit the new Mac-Forums Facebook page:
https://www.facebook.com/macforums1




Results 1 to 12 of 12
  1. #1
    Where are old operating system files located?
    I reinstalled my OS today, on the advice of an Apple customer support person. I used the utility in recovery mode to do it. They said that it wouldn't take any extra space, but after doing so I have about 5GB less of available memory than I do before. So I figure I must have some extra operating system files on my computer taking up space. Is there a place on my machine where extra operating system files are stored so I can delete them? Thanks.

    I am using macOS Sierra 10.12.16 on a MacBook Pro (Retina, 13-inch, Early 2015).

  2. #2
    Where are old operating system files located?
    IWT's Avatar
    Member Since
    Jan 23, 2009
    Location
    Born in Scotland, Worked in Scotland then England, Now live in Wales
    Posts
    5,858
    Your Mac's Specs
    iMac 5K Retina 27", August 2019, 3.6GHz Intel Core i9, Memory 32GB, 2TB SSD, macOS Mojave 10.14.6
    Rep Power
    19
    Hi and welcome.

    My guess would be that the old OS was corrupted or defective in some way otherwise Apple would not have recommended a reinstall.

    The reinstall, being new, update and complete may be taking up the extra storage (not memory). After all, 5GB is not a big difference and probably explains why the previous version was faulty.

    It may even have included updates which your previous OS didn’t have.

    Personally, I’d forget about it.

    Ian
    Ian

  3. #3
    Where are old operating system files located?
    ferrarr's Avatar
    Member Since
    May 21, 2012
    Location
    Pawtucket, RI, US
    Posts
    6,642
    Your Mac's Specs
    L2014 Mac mini macOS 14, iPhone 8+ iOS 12, 12.9" iPad Pro 1 iOS 12, Pencil 1
    Rep Power
    13
    Is there a reason you are still using Sierra, and have not updated to Mojave?
    -- Bob --
    Please backup. Everything has a life cycle, unexpected and warning free. Nothing will last as long as you want it to.

  4. #4
    Where are old operating system files located?
    pigoo3's Avatar
    Member Since
    May 20, 2008
    Location
    U.S.
    Posts
    41,271
    Your Mac's Specs
    2011 17" MBP 2.2ghz, 16gig ram, OS 10.11.6
    Rep Power
    43
    Quote Originally Posted by CharType View Post
    ...but after doing so I have about 5GB less of available memory than I do before.
    Just in case...check the Trash...and make sure it's been emptied.

    - Nick
    - Too many "beachballs", read this: Beachballs
    - Computer seems slower than it used to? Read this for some slow computer tips: Speedup
    - Almost full hard drive? Some solutions. Out of Space
    - Apple Battery Info. Battery

  5. #5
    Where are old operating system files located?
    MacInWin's Avatar
    Member Since
    Jan 01, 2009
    Location
    Winchester, VA
    Posts
    6,492
    Your Mac's Specs
    MBP 15" Mid 2015, iPhone XS, an iMac, plus ATVs, AWatch, MacMini
    Rep Power
    26
    after doing so I have about 5GB less of available memory than I do before
    How do you know that? Some of the displays of available storage are not accurate and not updated very often. (And it is "storage" not "memory" that I think you are talking about.)
    Jake

  6. #6
    Yes I mean storage, and available hard drive space in particular. My bad.

    Quote Originally Posted by IWT View Post
    My guess would be that the old OS was corrupted or defective in some way otherwise Apple would not have recommended a reinstall.
    That's a big assumption. You don't know what issue I had or the context in which they recommended a reinstall. And you're just assuming that the person at Apple would not have recommended a reinstall unless there was something wrong with the OS, which you don't know and doesn't make logical sense.

    Quote Originally Posted by IWT View Post
    The reinstall, being new, update and complete may be taking up the extra storage (not memory). After all, 5GB is not a big difference and probably explains why the previous version was faulty.

    It may even have included updates which your previous OS didnít have.
    That's possible. But it's not certain, and I'd like to know where the OS files are so I can check.

    Quote Originally Posted by ferrarr View Post
    Is there a reason you are still using Sierra, and have not updated to Mojave?
    I guess I didn't think to check for an update. I'll look into it. Anyway, I don't think that's relevant to my question.

    Quote Originally Posted by pigoo3 View Post
    Just in case...check the Trash...and make sure it's been emptied.

    - Nick
    I checked that, that's not it.

    Quote Originally Posted by MacInWin View Post
    How do you know that? Some of the displays of available storage are not accurate and not updated very often. (And it is "storage" not "memory" that I think you are talking about.)
    The reinstall utility tells you how much available disk space you have left. And I checked it again after reinstalling.

  7. #7
    Where are old operating system files located?
    ferrarr's Avatar
    Member Since
    May 21, 2012
    Location
    Pawtucket, RI, US
    Posts
    6,642
    Your Mac's Specs
    L2014 Mac mini macOS 14, iPhone 8+ iOS 12, 12.9" iPad Pro 1 iOS 12, Pencil 1
    Rep Power
    13
    Did you erase/wipe/format the drive and then reinstall the OS or did you just do a reinstall of the OS? If you only did the reinstall, then that does not remove any of your personal files/data.

    Yes, we are not sitting in front of your computer, so when we help and not all information is given we will ask questions and (have to) make assumptions.
    -- Bob --
    Please backup. Everything has a life cycle, unexpected and warning free. Nothing will last as long as you want it to.

  8. #8
    Where are old operating system files located?
    pigoo3's Avatar
    Member Since
    May 20, 2008
    Location
    U.S.
    Posts
    41,271
    Your Mac's Specs
    2011 17" MBP 2.2ghz, 16gig ram, OS 10.11.6
    Rep Power
    43
    Quote Originally Posted by CharType View Post
    That's a big assumption. You don't know what issue I had or the context in which they recommended a reinstall. And you're just assuming that the person at Apple would not have recommended a reinstall unless there was something wrong with the OS, which you don't know and doesn't make logical sense.
    Members are just trying to help...and sometimes when trying to help folks with issues...we need to make educated guess's.

    What member IWT suggested is not unreasonable...fresh installs of the OS can solve issues. In post #1 you never mentioned why you contacted Apple in the first place (what the original issue was). Reinstalling the OS can be a basic troubleshooting step...since after this is done...the Apple person (or any other person) helping you then knows that the OS install is not the issue.

    - Nick
    - Too many "beachballs", read this: Beachballs
    - Computer seems slower than it used to? Read this for some slow computer tips: Speedup
    - Almost full hard drive? Some solutions. Out of Space
    - Apple Battery Info. Battery

  9. #9
    Where are old operating system files located?
    MacInWin's Avatar
    Member Since
    Jan 01, 2009
    Location
    Winchester, VA
    Posts
    6,492
    Your Mac's Specs
    MBP 15" Mid 2015, iPhone XS, an iMac, plus ATVs, AWatch, MacMini
    Rep Power
    26
    The reinstall utility tells you how much available disk space you have left. And I checked it again after reinstalling.
    What "reinstall utility" are you talking about? Did you mean the OS installer? The recovery partition? It does help to use terms carefully as we cannot see your system and can only react to the words you write.

    As for where the system files are, they are (mostly) in /Library and /System. However, both of those locations are very dangerous for someone who doesn't know what they are doing to go mucking about. It's really easy to brick the MBP and end up losing all of the data on the drive because the system becomes unstable and unusable. In more recent versions of the OS, Apple has put additional security on those two locations to prevent just that activity.
    Jake

  10. #10
    Where are old operating system files located?
    pm-r's Avatar
    Member Since
    Oct 16, 2010
    Location
    Brentwood Bay, BC, Canada
    Posts
    12,161
    Rep Power
    20
    Where are old operating system files located?
    I reinstalled my OS today,
    As for where the system files are, they are (mostly) in /Library and /System.

    And I dare say, and not trying to be a smartass, the old operating system files have normally all been replaced and have gone to Mac OS software cloud heaven. They are kaput, gone, and have been replaced. They don't stay around after an OS reinstall or remain taking up drive space that seemed to be a suspected possibility.


    - Patrick
    ======

  11. #11
    Where are old operating system files located?
    MacInWin's Avatar
    Member Since
    Jan 01, 2009
    Location
    Winchester, VA
    Posts
    6,492
    Your Mac's Specs
    MBP 15" Mid 2015, iPhone XS, an iMac, plus ATVs, AWatch, MacMini
    Rep Power
    26
    Another factor, Patrick, is that if the readings of the drive free space were taken immediately after install and before a reboot, the swap/cache space could well be that large. So looking for anything to delete in /Library or /System is going to be pretty fruitless, I suspect. And the 5Gb will be, if swap/cache, recovered by a reboot or cleaning with OnyX.

    But, the OP asked "where," and I gave the answer.
    Jake

  12. #12
    Quote Originally Posted by MacInWin View Post
    What "reinstall utility" are you talking about? Did you mean the OS installer? The recovery partition? It does help to use terms carefully as we cannot see your system and can only react to the words you write.
    "Reinstall macOS", the second option on in the "macOS Utilities" window in recovery mode. Sorry if I was being unclear. Anyway I only saw it once, and I can't go back to it for risk of getting locked out of my computer again.

    I'll look around in Library and System a bit, but it sounds like I might not find anything. Thanks everyone.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Replies: 5
    Last Post: 05-30-2013, 01:13 PM
  2. Help: I can't open MS Office files located on my mac partition when I'm on Windows Pa
    By rebeggar in forum Running Windows (or anything else) on your Mac
    Replies: 1
    Last Post: 02-19-2012, 10:51 PM
  3. Trash wont empty - files located on XP BootCamp partition
    By njharrison1979 in forum macOS - Operating System
    Replies: 3
    Last Post: 10-07-2010, 03:17 AM
  4. Where is the "System Info" file located?
    By DarkDTSHD in forum macOS - Apps and Games
    Replies: 12
    Last Post: 01-05-2009, 11:53 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •