Clean reinstall?  needed?

Hello, I'm an ex Windows user (I sound like being at an AA meeting now) and with Windows you'd have to reinstall everything fresh at least once a year as the computer would start clogging up and running slower. Especially programs that weren't properly deleted could cause problems.
Now more than a year after I bought my first Mac I wonder if it will help to clean the disk and reinstall Mac OS. Will it make my MacBook run faster? I'm sure I have installed some stuff that I never use.
And if I do what do I need to save? Obviously the files in my user folder, but what else? Where is the mail saved? And how about all the settings? Or all the passwords and other stuff in the keychain?

Hi mikeyni;
First of all Mac OS X does not have anything called a "clean install". The closest thing that it does have is an Erase & Install, which first erases the disk that proceeds to install OS X.
Generally this is saved for when you have a serious problem that you are not able to solve by any other method. So far in the years I have been using Mac OS X, I have yet to do an Erase & Install. Generally it is possible to solve problems with less drastic methods then that.
Allan

Similar Messages

  • Clean reinstall - need help

    I just did a clean reinstall of my G4 eMac (10.3.9) and did all the software updates available. I can't seem to get above iTunes 4 (can't run 8) and am having difficulty transferring my stuff back onto the computer from the external drive. Address Book finally worked with a simple copy/paste. Similar with my iTunes folder...I copied the whole thing as instructed in Ihnakto's book but only the songs trasferred, not my playlists, etc. Also, no podcast or TV shows as they were not on iTunes 4. Can't seem to figure out how to get my iCal back on either. Help anyone? I just cannot afford a new computer yet.

    chelydra wrote:
    I just did a clean reinstall of my G4 eMac (10.3.9) and did all the software updates available.
    Repair permissions with disk utility too if you haven't already.
    I can't seem to get above iTunes 4 (can't run 8) and am having difficulty transferring my stuff back onto the computer from the external drive.
    What exactly is happening to have you say you "can't get above" it? Are you using Software Update? Does it say what version it is trying to download? itunes 8 won't run under Panther anyway, but I think software updater should be smart enough to only offer you the highest version that will run under your OS.
    Address Book finally worked with a simple copy/paste. Similar with my iTunes folder...I copied the whole thing as instructed in Ihnakto's book but only the songs trasferred, not my playlists, etc. Also, no podcast or TV shows as they were not on iTunes 4. Can't seem to figure out how to get my iCal back on either.
    Some of these programs have items that need to go into very specific places. Actually the best way to reinstall is to use an archive and install which keeps all your old settings and data. I couldn't find a reference for the book you menioned so I have no idea what it told you to do. I know it's a bit late to say this if this is what you did but dragging back and forth is probably the worst way to back up in OSX. You should use a cloning too such as SuperDuper or Carbon Copy Cloner. OSX sets permissions on files and the dragging process can unset those and make it difficult for you or the computer to get access to them.
    With iTunes you have to copy the whole itunes folder over.
    I don't know specifically where ical stores all its information but many personal settings are in the Library folder in your user area (not the one at the main level of the computer but in your user area).

  • Is a clean reinstall needed?

    I will be getting my new Intel iMac next week and have noticed a few posts where it is suggested that the factory install of the OS may not be optimal. Should I erase, zero the drive, and install the OS fresh right out of the box or should I give it a go and see if it has any issues and do that as a last resort?
    Also, it is my understanding that there is an application that will bring all of your files/preferences from your old mac over when you first start the machine. Can this still be done after a clean install of the OS?
    Thanks

    465/2911
    Hi Tomzo,
    I'm with Gossamer on this one.
    An Erase & Install allows to install only the software you need, to partition if you need it, and it is good to test your computer's hardware install capabilities, as well as the DVD itself.
    "...there is an application that will bring all of your files/preferences from your old mac over when you first start the machine..."
    If it is the same Migration Assistant we are talking about, than in our Tiger DVDs,
    yes,
    each Tiger Install brings the same dialog boxes settings at install, including Migration if needed.
    Allan and Steve are right that you should not need to do anything special,
    but,
    there will never be a better time to do an Erase & Install on a Mac, than the time when you have no data to lose on it
    Enjoy your new Mac!
    Axl

  • Need to do a clean reinstall, but need to keep applications and documents

    I know that to do a clean reinstall of 10.6 you must first erase the hard drive using Disk Utility. I want the reinstall to be clear of all old settings, except that I need to carry over my applications and documents. Could I use Migration Assistant to backup just the applications and documents to an external hard disk, reinstall the OS, and then use Migration Assistant again to restore my applications and documents from the external drive? I've never used Migration Assistant.

    Why can't you just delete the current settings?
    But if you really want to erase everything and reload 99.9% of it, use +Setup Assistant+ after you install OSX on the empty volume. By default, it will transfer your network settings, but you can omit them. See [Setting up a new Mac from an old one or its backups|http://web.me.com/pondini/AppleTips/Setup.html] (or use the link in *User Tips* at the top of the +Snow Leopard > Installation and Setup+ forum).

  • Clean Reinstall/Must restore from original disks or can I use 10.4

    Have pored thru the forums looking for my specific questions but haven't found them - so please bear with more clean reinstall questions ---
    1) Yes - I have to do a clean reinstall - much other discussion on other forums has said this is what needs to happen for my particular sick Mac situation - so I already know this....
    2) Have already used carbon copy cloner to back up entire hard drive, files et al to an external hard drive...
    3) Have iMac G4 - came with OS 10.2.3 - I do not need OS 9 anymore - haven't used it for 2 years, I have the newest Tiger disks and just got iLife 2006 - can I just use those to put my system back on? Or do I need to start from my original iMac Software Install and Restore DVD - and then add on the next versions from their disks till I get to Tiger? (I have all of them - Panther, Puma, Bobcat, Lynx - you name it... Steve Jobs is getting his money's worth out of me)....
    4) Someone told me I should erase my hard drive completely with disk utility first - and then do the clean install on a totally virgin hard drive - is this true? I want to do the absolute premium, totally best thing....
    5) Should I write down all the info in "About This Computer" first - like serial number etc - does the above option erase all of that?
    6) When I do a clean reinstall - should I name my computer and put in my user name and password etc exactly the way it was?
    Thanks so much - I really have searched these forums and couldn't find the above -
    madmags
    iMac superdrive   Mac OS X (10.4.4)   Lacie external HD 150 GB

    1) Yes - I have to do a clean reinstall - much other discussion on other forums has said this is what needs to happen for my particular sick Mac situation - so I already know this....
    First off, there is no such thing as a "clean" reinstall. Maybe an erase and install as the rest of your post suggests:
    http://discussions.apple.com/thread.jspa?messageID=607614
    Secondly, a sick machine rarely needs an erase and install. I use it only to discover right away if there is a hardware issue with the computer as opposed to software.
    2) Have already used carbon copy cloner to back up entire hard drive, files et al to an external hard drive...
    Have you tested to make sure the clone is bootable?
    3) Have iMac G4 - came with OS 10.2.3 - I do not need OS 9 anymore - haven't used it for 2 years, I have the newest Tiger disks and just got iLife 2006 - can I just use those to put my system back on? Or do I need to start from my original iMac Software Install and Restore DVD - and then add on the next versions from their disks till I get to Tiger? (I have all of them - Panther, Puma, Bobcat, Lynx - you name it... Steve Jobs is getting his money's worth out of me)....
    You can use the Tiger disks, though I would troubleshoot your problem first before even attempting to install Tiger.
    4) Someone told me I should erase my hard drive completely with disk utility first - and then do the clean install on a totally virgin hard drive - is this true? I want to do the absolute premium, totally best thing....
    Not necessarily. Once your 10.2 system is healthy, frequently all that is necessary is an Archive and Install:
    http://docs.info.apple.com/article.html?artnum=301270
    I've seen some cases where this doesn't work, while others where it does. So the first thing is to make sure your system is healthy, then back it up, and then upgrade.
    5) Should I write down all the info in "About This Computer" first - like serial number etc - does the above option erase all of that?
    The only serial numbers you need are for third party applications, and any Apple pro applications. The operating system has no serial number. This would be in case, you can't restore from your clone when you are finished, and Archive and Install doesn't work.
    6) When I do a clean reinstall - should I name my computer and put in my user name and password etc exactly the way it was?
    We'll cross that road once we get there. I'd rather make sure you aren't just installing an unhealthy system on an unhealthy system.
    Tell me more about your sick system, and maybe we can solve the issue so all that you need to do is make sure your backup is bootable and an Archive and Install.

  • Retaining playlists after clean reinstall of OS (all info on external HD)?

    Okay, this happens to me every single time I have to do this:
    I run my iTunes entirely off of an external hard drive - so everything it there including the iTunesLibrary.xml files (I also have the entire hard drive backed up on a completely separate external drive due to past complications like this).  SO - I had to do a clean reinstall of the Snow Leopard OS because my Mac is old and probably on its last legs (which is a question for a whole different support area) and now I want to run iTunes while maintaining the playlists and playcounts and all that other stuff that I had before - while also retaining all of my apps and movies and downloads, etc.
    I've done this before and each time I have had to call for support and it takes hours, literally hours, to get it fixed - and sadly, I have no recollection of what we did previously.  I have tried following the advice from other support questions on this forum, but something is amiss and not working properly.  I have tried to redirect iTunes to the External HD through the advanced pane from the Preferences menus.....I have opened iTunes while holding "option" and choosing the External HD and it starts to reload ALL of my music and does not reload the playlists AND it is moving the folders all over the place and it looks like it's creating duplicate files as well.
    Seriously, this is getting aggravating.  When I first moved my files to an external I had to do this and lost all of my playlist info.  Then I had to move to a larger external and lost all of my playlist info.  I had issues with that external and had to move it all again, and this time, after calling for support, I saved my playlist info, but ended up with lost songs and duplicates of almost 5000 songs.  I'm afraid that after messing around with the HD I have plugged in now trying to reload everything that it is screwed up and will mess up and create even more duplicates so I may have to use my back-up HD. 
    If that's the case, please will someone help me figure out how to do this?  All I want is to open iTunes using my External HD (as I always do) while maintaining my playlists and playcounts and everything that I had prior to my reload of the OS.......please?!?!

    SO - I had to do a clean reinstall of the Snow Leopard OS
    Not really.
    Snow Leopard can be reinstalled over the exisitng system without losing any user data.
    now I want to run iTunes while maintaining the playlists and playcounts and all that other stuff that I had before - while also retaining all of my apps and movies and downloads, etc.
    Hold Option, launch iTunes, select Choose library... and select the iTunes folder on the external
    That is all you need to do.
    Make sure the exterrnal is powered on, mounted on the desktop and ready before launching iTunes.
    I have opened iTunes while holding "option" and choosing the External HD and it starts to reload ALL of my music and does not reload the playlists AND it is moving the folders all over the place and it looks like it's creating duplicate files as well.
    Nothing should get "reloaded" as it is simply the same iTunes library as before. Simply opening a library doesn't load anything new.

  • Preparing for clean reinstall

    I want to backup data and download OS to have a fresh system.
    I'm aware that I need to back up docs, etc, but wondering if there are system things I must attend to. (Or to which I must attend if you are one of thos snoonty Englsh majors) Ha.
    Thanks for your kind attention.

    Very kind of you to offer.
    I've been running Disk Utility, Permissions and repair, and find strange stuff. Incorrect printing info for instance when I have not changed or used other printers in years. And, all kinds of problems with languge permissions and I never use anyting but US English. (I deleted all the other languge options). Things would get VERY slow, at all programs, and only by running Disk Utilty could I correct it....and then only brielfly sometimes. Some programs would not stop an I had to force close them. I deleted all the APPS I downloaded but never used and then deleted all instances of the files from the library. (as far as I know) That seemed to help. I had been using Firefox and switched to Safari (don't know if that helped or not)
    Whatever....I'm now back to about normal speed and not many strange things going on. Yet.
    That's a brief overview. It just seems that a "clean reinstall" would be a good solution. But, I see your "background" here and note you are a long time user who seems to have stellar reputation and I'd gladly (and thankfuly) be happy to hear whatever you have to offer rather than the clean reinstall I'm considering.
    Thanks so much for your kind attention,
    Wonky

  • Can't find sound card after clean reinstall from scratch to vista 32 bit from 64

    Greetings Everyone,
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    Here's all the specs from the back if you need them:
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    Could anyone please offer me advice?
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    Rob
    most humble newbie
    Message Edited by robcoats on 05-28-2009 09:53 AM
    This question was solved.
    View Solution.

    Not really obscure_notice the button at top of this page..."Support & Drivers"?
    ******Clicking the Thumbs-Up button is a way to say -Thanks!.******
    **Click Accept as Solution on a Reply that solves your issue to help others**

  • Blue Screen after clean reinstall snow leopard

    I have a mid 2011 that came with Snow Leopard and disks.  I upgraded from there to Lion - then whatever came next and to Mavericks and finally Yosemite, which was a nightmare for me. I did not use disks of any of the rest.  So I just decided to take my disks and go back to Snow Leopard.  I did this and it asked to go to disk utility and repair both the HD and Permissions.  It came out ok, but there was an instance where looking at the list in HD repair, I saw Suid File System Library Core was moved and cannot be repaired. I went ahead and erased the Hard Drive. Then closed out and installed Snow Leopard. I'm not sure I did it right because I had to rename the new start up disk and typed in unnamed 1.
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    Download and install Mac OS X 10.6.8 Update Combo v1.1.

  • Can't connect to time capsule after clean reinstall of Yosemite

    Hi
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    Reset the TC to factory.. redo the setup from Yosemite version Airport Utility.. no files are lost doing this.
    Factory reset universal
    Power off the TC.. ie pull the power cord or power off at the wall.. wait 10sec.. hold in the reset button.. be gentle.. power on again still holding in reset.. and keep holding it in for another 10sec. You may need some help as it is hard to both hold in reset and apply power. It will show success by rapidly blinking the front led. Release the reset.. and wait a couple of min for the TC to reset and come back with factory settings. If the front LED doesn’t blink rapidly you missed it and simply try again. The reset is fairly fragile in these.. press it so you feel it just click and no more.. I have seen people bend the lever or even break it. I use a toothpick as tool.
    N.B. None of your files on the hard disk of the TC are deleted.. this simply clears out the router settings of the TC.
    When you do the setup, give the TC short names with no spaces and pure alphanumeric characters.. same for passwords.. 8-20 characters.
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  • HT2474 I did a clean reinstall of mountain lion and for some reason the dock keeps osx lion format

    I did a clean reinstall of mountain lion and for some reason the dock keeps osx lion format. Does someone how to uptade only dock application?
    Tks

    Try doing a Dock restart using the following Terminal command:
    killall Dock
    Log out/in and test. If that doesn't work.
    You need to look in your user Library/Applications Support/Dock for the .db. Hold down the option key while using the Finder “Go To Folder” command. Enter ~/ Library/Applications Support/Dock.  Move the .db to your desktop.
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    http://osxdaily.com/2011/07/04/show-library-directory-in-mac-os-x-lion/
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  • Clean reinstal?

    My Macbook Pro is getting a clean reinstall of Snow Leopard, however it shipped with Leopard originally. SL was a paid upgrade.
    I presume I only need reinstall SL rather than Leopard then SL?

    Sickofpcs wrote:
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    What was the problem that led you to do a clean install, instead of a straight upgrade?
    As captfred says, you should be able to re-install iLife from your original install disks. If it does not recognize your Mac, did you have nay hardware repairs made?
    Alternatively you might try this...
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  • Clean Reinstall without App Store download?

    I need to do a clean reinstall. (I have a problem with Final Cut Pro X that is resolved when I create a new user and work from there).
    I don't have a Recovery HD on my system (I thought it was automatically created when you install the OS). To further complicate matters, every time I try to download Mountain Lion from the App Store, it hangs at 425 MB (downloaded).
    I've repaired permissions, deleted cache files, checked the App Store for unfinished downloads etc etc but every time the download starts, it gets to 425 MB and then locks up with the message:
    "OS X Lion failed to download - Use the Purchases page to try again."
    (This is not a helpful message - especially when you've "tried again" a dozen times.
    I've also deleted any file or part-file that's been created in the Apps folder.
    I'm totally at a loss to know how I can create a Recovery HD if Mountain Lion won't download from the App Store.
    I tried downloading Mountain Lion onto my partner Gill's iMac (she's was a little apprehensive about it). I was hoping to create a Recovery HD on a 16GB CF card.
    If THAT worked I would probably have been in business because I could have used it on my Mac Pro.
    The download onto Gill's iMac failed at 124 MB (Downloaded).
    I suspected our broadband connection, but I just watched one of our videos on it, and it played perfectly - in fact the buffer indicator showed that the 4 min 44 sec video was fully downloaded by the time it had been playing for 35 seconds.
    I guess the fault must be with the App Store - although I downloaded FCP X from there last night.
    Assuming I eventually resolve this, it's a clean reinstall for me - and my first job after installing the system on any new Mac in the future will be to make certain I have a Recovery HD.
    I hope someone can shed some light on this.
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    Thanks for your help, Barney,
    I agree. If you vacuum your living room carpet, you don't empty the contents of the container back onto the floor so I don't refer to "clean install" if I intend to drag all the garbage back onto my system drive. If I do a "clean install" that's what it is - a very long tiresome process.
    I'm beginning to think the new user option is my only one. I've tried repeatedly (including using your suggestions above) and failed every time to get Mountain Lion to download.
    I doubt it would consistently fail at 425 MB if the wifi were causing the problem, but all the same, I connected via ethernet cable - to no avail. I even tried pausing the download at 400 MB, then switching off and disconnecting the router for five minutes - but that had no effect either.
    And I tried downloading at 5 am this morning, just in case it was heavy local usage that affected it, but again, it wouldn't be consistent.
    I just paused it again, and will restart the Mac before resuming, but I don't hold out much hope.
    If anyone has any ideas on this, I'd be most grateful.
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  • Clean reinstall vs. New User

    I am trying to troubleshoot some software that used to work perfectly on this system. I tried creating a new, fresh User and the software still crashed. I tried booting in the new user AND running in Safe Boot (shift key held down) at the same time! Still crashed! I have tried every other troubleshooting technique and, since I know the software worked once, I think it may be time to try the clean reinstall.
    BUT, what is the difference between the clean reinstall and creating a new user/safe boot? I thought the latter cleared your system of all “corrupting influences” as well.

    There is no such thing as a clean reinstall:
    http://discussions.apple.com/thread.jspa?messageID=607614
    If software still crashes after creating a new user, its preferences are systemwide, or it has drivers or fonts it needs to access which have become antiquated with the new operating system
    If you are using cache cleaning software, that can actually create application crashes.

  • Clean reinstall aftermath

    My internet apps have slowed way down, and other apps are slow to open. I'd like to do a clean reinstall; but due to a flood in my basement, I've lost most of my original software discs. I have a complete disc image backed up, but I don't want to use it, because I'll just reinstall the same problems. I also have the complete hard drive backed up separately, one-to-one. I'm wondering if I'll have problems if I just drag the apps from the external back-up drive into my new Applications folder.
    Are there any special steps or precautions I need to take?
    I'm also wondering whether, if I drag the contents of my old Library folder into the new Library folder, I'll basically be able to just pick up where I left off; or if I'm also likely to drag the old problems back in as well; and if I'll be able to drag the contents of my Microsoft User Data folder in to the new system without incident.
    Thanks in advance for your help.
    Eric

    Hi Eric!
    "...120GB hard drive with only about 11 GB of free space."
    You are dangerously close to crossing the safe threshold!
    Insufficient available space, can cause performance issues, system corruption, and possible loss of data.
    Depending on Mac system usage habits, it is a general recommendation, to keep 10% to as much as 20%, of the Total capacity, available at all times.
    Review the suggestions, in the documents that I have linked to below.
    Authored by Dr Smoke:
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    Freeing Space On Your Mac OS X Startup Disk
    Have you ever run any routine Maintenance procedures, as suggested in the articles linked to below?
    Mac OS X 10.3/10.4: System Maintenance, authored by Gulliver
    Maintaining Mac OS X, authored by Dr Smoke
    Is the Mac shutdown overnight, or does it run 24/7?
    If you turn the Mac off nightly, the Background Maintenance Tasks, are never run.
    These can also be run, using a Third-Party utility, or manually using Terminal, to run the CRON Commands.
    I use MacJanitor, when necessary.
    AppleJack probably has the same functions.
    INSTRUCTIONS TO RUN CRON MANUAL COMMANDS
    Quit all applications/programs.
    Navigate to HD > Applications > Utilities.
    Double click on Terminal, to open.
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    sudo periodic daily
    Press Return.
    Enter your Admin password when prompted, then press Return.
    This will execute the daily script that is sheduled to run every night.
    When completed, repeat this procedure, but change the command to:
    sudo periodic weekly
    This one rebuilds a database or two, and usually takes somewhat longer to complete. It is scheduled to run once a week.
    Repeat again, with command:
    sudo periodic monthly
    Or they can all be run in one pass, which is preferable, with this command:
    sudo periodic daily weekly monthly
    When the tasks complete, and return to the prompt, you may quit Terminal.
    Restart the Mac, and run Repair Permissions.
    TO REPAIR PERMISSIONS ON THE STARTUP DISK
    1.Open Disk Utility, located in Applications/Utilities, and select the startup disk in the left column.
    2.Click First Aid.
    3.Click Verify Disk Permissions to test permissions or Repair Disk Permissions to test and repair permissions. (I never "Verify". Just run "Repair".)
    Rerun RP, until the only messages reported, are listed here Spurious Permissions Errors Using: 10.4.x, authored by Michael Conniff.
    When "Repair Permissions" is complete. Quit "Disk Utility".
    ali b

  • Clean reinstall of FC Studio - What must I delete?

    Hi,
    I want to do a clean reinstall of FC Studio, and am wondering what I need to erase in addition to the applications themselves and their receipts in my library folder. Do I need to erase anything from Application Support, and what else do must I delete from my library folder?
    Thanks,
    -Tom

    Search is thy friend:
    http://discussions.apple.com/search.jspa?threadID=&q=uninstall&objID=c123&dateRa nge=last90days&userID=&numResults=15&rankBy=10001

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  • How to search for the url in a hyperlink.

    Is it possible to search a PDF and find the url in a hyperlink? According to Adobe, no! But is there some third party software? We are attempting to find a url in many PDF's but the hyperlink could have many different naming styles. Is there a way to

  • Can only connect on Wifi

    I have had my iPhone since February and I have only ever been able to connect to the internet when there is a wireless network present. I don't think it is a problem with the O2 coverage as they are normally pretty good. Whatever I do I cannot get th

  • Nested tables and alignment

    Hi! I'm new to the web programming field. I've built this site using tables. (which I hear is not the most advanced way to go these days, but I don't know CSS or anything about DIV tags) I can't get the top navigation to align correctly. Firefox keep

  • Scale on x axis for radians

    Hi, I'm trying to make a cosine plot and have run into trouble. I've described the issues in this thread: http://discussions.apple.com/thread.jspa?messageID=12507456#12507456 The main issue is that I have 24 points on the abscissa, which run from 0 t