Restoring system defaults on MAC

I am on OSX 10.8.2 on my new Macbook AIR - and I am confused by the FInder behavior
How do I return the FINder settings to the out of the box behavior.
Where do I find the how to guide to make it display diectories the way I am familiar?

I overwrote my TimeMachine partition on an external USB pocket drive and restored my MacBook Pro to it, after I recovered my wife's home directory onto my laptop. I was able to boot from the restored image on the external USB drive.
I installed and formatted the new internal disk on her MacBook, and attempted to restore the USB image to the internal drive. However, part way through, the Disk Utility Restore failed with an Input/Output error. Pretty terse. The system log has a kernel message, disk underrun error on the external USB drive. So I am unable to restore from the external drive. I tried several times.
However, I can boot from the external drive and the system runs fine from it.
I think I'll have to get a firewire 800 to 400 converter cable and run my laptop in target disk mode and try a restore from that angle. I hate spending the money as I have the cable and adapter at home, but I'm 9,000 miles away in New Zealand!
Is there any solution or anyone have information on the disk underrun error?
Regards, Dave.

Similar Messages

Restore system from another mac

I deleted, by m istake, some systemfiles from my Macbook Pro. We also. Have another Macbook Pro, can we use it to restore the system of the first one?

Most likely not; not only is it illegal, but Macs generally only start from the install version for that particular machine. Having said that, part of that depends on the OS version(s) you are running - it is not mentioned. Please post.

Can I use another Mac's system restore disc on my Mac?

Disclaimer: Apple does not necessarily endorse any suggestions, solutions, or third-party software products that may be mentioned in the topic below. Apple encourages you to first seek a solution at Apple Support. The following links are provided as is, with no guarantee of the effectiveness or reliability of the information. Apple does not guarantee that these links will be maintained or functional at any given time. Use the information below at your own discretion.
Q. Can I use the grey coloured System Restore discs that shipped with Mac A to install OS X onto Mac B?
A. In most cases, due to technical and licensing reasons, the answer is no. The answer is definitely no if any of the following apply:
Any part of the software on the system restore disc is currently installed or in use on Mac A, or on any other computer1
The OS on the disc is any version of Leopard (10.5.x), or is any version of Tiger later than 10.4.42
Either of the two Macs has an Intel processor3
The system restore discs from Mac A contain an older version of Mac OS X than the version of Mac OS X that was on the install discs that would have shipped with Mac B4
However, an installation attempt may be successful, and compliant with all OS X licensing terms, if all of the following conditions are met:
No part of the software on the system restore disc is currently installed or in use on Mac A, or on any other computer1
The OS on the disc is Tiger 10.4.3 or earlier, or is an earlier version of OS X (10.3.x, 10.2.x, etc)2
Both Mac A and Mac B have PowerPC processors (G3, G4, or G5)3
The system restore discs from Mac A contain a newer version of Mac OS X than the version of Mac OS X that was on the install discs that would have shipped with Mac B4
All terms of the Mac OS X Software License Agreement are followed, particularly sections 2 and 3 regarding permitted usage and transfer.
Even if all the above conditions are met, software restore discs contain computer-specific releases of Mac OS X, and may not install or work properly on a Mac that has a hardware configuration that is significantly different than the original.
Notes
The license agreement for single user copies of all versions of OS X, including all versions that ship on system restore discs, do not permit any part of the software to be installed or used on more than one computer at the same time.
The provision restricting the use of grey coloured system restore discs to the same Mac with which they shipped was introduced with the 10.4.4 Software License Agreement, and has been carried through to the 10.5 Leopard Software License Agreement. This restriction was not present in the Software License Agreement for earlier versions of Tiger, nor for earlier versions of Mac OS X.
All Macs with Intel processors shipped with a Mac OS X EULA restricting usage of the software restore discs to that Mac only. The license that shipped with G3, G4, or G5 Macs that shipped with 10.4.3 or earlier permit the transfer of OS X to another Mac, provided that all terms of the license agreement are followed. Furthermore, the architecture of PowerPC and Intel systems are incompatible enough that neither platform's system restore discs will install on the other.
Mac OS X system software will not properly run on, and may not even install on, any Mac that is newer than it, because the software lacks the hardware drivers to run properly on the newer hardware. Details are in this document: http://support.apple.com/kb/HT2186
Do you want to provide feedback on this User Contributed Tip or contribute your own? If you have achieved Level 2 status, visit the User Tips Library Contributions forum for more information.

Gray Install Discs are Machine specific, so even if both were Intel iMacs they'd have to be the same Models.
Leopard 10.5.x is another possible option besides Tiger/10.4.x.
Tiger Requirements...
To use Mac OS X 10.4 Tiger, your Macintosh needs:
* A PowerPC G3, G4, or G5 processor
* Built-in FireWire
* At least 256 MB of RAM (I recommend 1GB minimum)
* DVD drive (DVD-ROM), Combo (CD-RW/DVD-ROM) or SuperDrive (DVD-R) for installation
* At least 3 GB of free disk space; 4 GB if you install the XCode 2 Developer Tools (I recommend 20GB minimum)
http://support.apple.com/kb/HT1514
See Tom's, (Texas Mac Man), great info on where/how to find/get Tiger...
http://discussions.apple.com/thread.jspa?messageID=9755670&#9755670
Or Ali Brown's great info on where/how to find/get Tiger...
http://discussions.apple.com/thread.jspa?messageID=10381710#10381710
Leopard requirements/10.5.x...
* Mac computer with an Intel, PowerPC G5, or PowerPC G4 (867MHz or faster) processor
minimum system requirements
* 512MB of memory (I say 2GB at least)
* DVD drive for installation
* 9GB of available disk space (I say 30GB at least)
You have to call Apple & likely ask for a Product Specialist to get it, if they still have it!

Recovering Mac HD via Time Machine Backup fails because "Restore system from backup" doesn't show in Utilities Menu of original install. DVD

Hi, after serious problems (troubleshooting didn't help) with my iMac G5 (PPC) running Mac OS X Leopard I've tried to recover my Mac HD via Time Machine (exactly as described by David Pogue on page 242 of the Leopard Missing Manual). However, "Restore system from backup" in the Utilities Menu of my original Leopard installation DVD failed to show up. What can I do?
Any assistance will be greatly appreciated -
Ballant

Hi Ballant,
I'm not very good with TM, nor a fan of it, but our resident king of TM, Pondini, has a vast array of very well done TM trouble shootings...
http://pondini.org/TM/Troubleshooting.html

System default background color to JFrame on MAC OSX & Ubuntu

I want to set JFrame backgroud color to System Default color of MAC OSX and UBuntu OS. Can anyone plz help me in this regard.
Thanks

Just an addition: If you want to give your application the typical 'brushed metal' look on Mac OS, try starting the application with "-Dapple.awt.brushMetalLook=true"

Why have my system preferences all been restored to default?

Hi,
Yesterday my iMac was really playing up, it was writing to the disk, being really noisy and overall not responding much. So after failing to reach the Apple Menu to shut down, I just held the power button on the back of my Alu iMac until it switched off (not slept). This morning I awake, and turn my computer on, log in. Everything seems fine, but, the default Dock is shown, spaces are inactive and all my System Preferences have been restored to defaults, therefore I imagine the System Preferences file or something was corrupt when I force shut down the computer, meaning it started afresh. I have a time machine backup (hallelujah for time machine!) so I can retrieve a certain file and replace it if needs be.
Could anyone give me instruction on how to get my System Preferences back the way I had them?
Thanks.

the system writes to various preference files when you quit applications or shut down normally. It does it by first deleting the old preference file and then replacing it with a new one. In the event of a crash or a hard shutdown it sometimes does the former but has no chance to do the latter. in that case that preference file is created with default values on restart.
It sounds like you have several problems with your computer and several pref files may have been involved. You might consider restoring the whole preferences folder from the library in your home folder (not the one at the top level of the hard drive). However, this might not fix all the problems if your system was seriously misbehaving. I would do a full system restore from TM from some time point before the problems started. to do that start from the leopard install DVD and once past the language screen choose "restore from backup from the Utilities menu at the top.

Is there a system restore mode on a Mac?

is there a system restore mode on a Mac?

Yes, it you are talking about restoring your system, take a look at this link, https://discussions.apple.com/message/2733572#2733572

"Restore system from backup" doesn't work

Hi folks! I've got a strange little problem and my normal rampage through Google hasn't dug up anything, so I figured I'd ask it here.
I currently have an early 2011 MacBookPro running 10.6.8 on an Intel SSD. A few days ago I figured I'd install an XP boot camp partition for the occasional bout of gaming (mmm... Skyrim... *dreamy look*)
So I made my Time Machine backup up-to-date, burned a CD with drivers, and let Disk Utility play with the partitions. Only thing was it said it couldn't do the job due to space issues and suggested I wipe the disk first.
Ok, no problem. My Time Machine backup was snug and secure and I've got plenty of install experience. I popped in the Lion DVD I'd burned for my other iMac and booted from it. Strangely, it give me an installation error (I guess it tries to install automatically without user interaction). But that's fine since I didn't want to install Lion anyway (I'm addicted to SL's Spaces). So I ran Disk Utility again with the partitions the way Boot Camp had advised (GUID, 2 partitions). This also worked without a problem.
Then I attempted the option "Restore system from backup" in the Utilities menu, and lo and behold: nothing happens. Nothing happened at all. No drive spin-up, no color wheel, no indication of any activity whatsoever. If I select any of the other options, it opens promptly, but clicking the restore option is as productive as a glob of ant spit on a meteor strike.
So I figure, still no worries, maybe the Lion disk has issues. So I take out my Snow Leopard DVD and boot from that. Never gave problems before, but alas: the iMac refuses to boot from it and starts throwing out 3 beeps every 5 seconds or so. (Googling the beeps pointed me to memory issues. Wait.. Whut?!?)
Okaaay. Then I tried it with my Leopard DVD. Once again, won't boot, beeps.
The Lion DVD seems to be the only DVD I can boot my mac from. The only thing I can guess at is that Apple prevents us from installing with older DVD's because of driver issues, which makes sense I guess. But I had Snow Leopard running fine up until now. I've tried several different partitioning schemes including the default one for an installation, but no cigar. Both Disk Utility and futil show both drives are visible and ok.
Anyone have any ideas? Thanks in advance for your time!
regards,
Meindert Honig

lepkitty wrote:
you should see the time machine come up and be able to select a date on the rite. the screen should look like its something out of star trek with several windows going back into a star like looking thing. if you see that then you want to do is select a date then click restore. you will be promoted that doing this will erase the computer, thats ok! its going to erase it and replace it with what your restoring.
You're mixing two very different things. You get the +Star Wars+ display, with the timeline on the right, only when browsing via +Enter Time Machine.+ Restoring something from there +*does not erase your entire computer!+* It only replaces what you've selected to restore.
If you do a full system restore (meaning boot volume), starting with your Install disc (per #14 in the Frequently Asked Questions *User Tip,* also at the top of this forum), there is no "Star Wars" display, and only the drive/partition that you select as a destination for the restore is erased.

Leopard Install-iCal won't restore from Backup.app (.Mac User)

I have an iBook G4, 1.2GHz, 1.25GB RAM. I backed up all files using .Mac's Backup, performed an erase and install of the system, and set up .Mac sync preferences at startup (under System preferences--all .Mac options were checked, to include Calendars). After installing apps and restoring my iCal files from Backup, I opened iCal, and only the default Home and Events calendars were shown; all my backed up calendars were not shown.
I appears that you need to disable (uncheck) the Calendar sync preference in the .Mac sync preferences PRIOR to accomplishing the restore steps in the posted solution: http://docs.info.apple.com/article.html?artnum=306482
After restoring the files, open iCal to ensure that all calendars are in the application. You can then return to .Mac Sync Preferences and select (check) the Calendars preference.
I also recommend deleting the iCal plist file, located in Users/USERNAME/Library/Preferences/com.apple.iCal.plist
Deleting this file will restart your initial iCal configuration; this file be recreated at iCal startup.
Alan

Hi, I figured it out. Here's step by step on how to do this.
1) go to "C:\Users\User\AppData\Roaming\Apple Computer\MobileSync\Backup" and make a copy of the folders to my documents (or wherever you like).
2) sync your iPod with iTunes to get all your apps back onto your ipod (your saved data won't be back yet).
3) close iTunes
4) iTunes will have overwritten your old backup, so delete the folders in "C:\Users\User\AppData\Roaming\Apple Computer\MobileSync\Backup" and copy the folders you copied earlier (from my documents) back to "C:\Users\User\AppData\Roaming\Apple Computer\MobileSync\Backup".
5) open iTunes and restore from backup.
all your app data should be there and everything back to normal.
Everyone should make sure that you back up your iPod backups from the backup folder every once in a while, because you could need them sometime in the future if iTunes decides to rewrite over your backup.
Also, never try to restore your iPod from backup without first backing up your backup (yes, iTunes is crazy). If you do something wrong, the next time you connect your iPod, all your hope of being able to fix it will be gone.

I used time machine to restore on a formatted MAC. Now the HDD space has reduced by 100GB but I cannot see any of the files. How do I find and delete those 100GB data from the HDD?

I used time machine to restore on a formatted MAC. Now the HDD space has reduced by 100GB but I cannot see any of the files. How do I find and delete those 100GB data from the HDD?

dglenn9000 wrote:
I created a new user account just to see if it was my user Library or if there was something wrong with my system. And the new user account is doing most of the same things so I will need to do a full restore anyway.
Not necessarily. I'd suggest downloading and installing the "combo" update. That's a combination (thus the clever name) of all the updates to Leopard since it was first released, so installing it should fix anything that's gone wrong since then, such as with one of the normal "point" updates. Info and download available at: http://support.apple.com/downloads/MacOS_X_10_5_8_ComboUpdate Be sure to do a +Repair Permissions+ via Disk Utility (in your Applications/Utilities folder) afterwards.

Restore Preview default background?

Hello! Can you help me guys? How can I restore the default background in Preview? (10.7 Lion). I changed it to a color in the preferences but I can't change it back to the default texture... :S (that is here by the way: /System/Library/Frameworks/AppKit.framework/Versions/C/Resources/NSTexturedFullS creenBackgroundColor.png)

Click on the Windows Background button to open the Colors window.
Click the "Sliders" tab (second on left) and choose the Gray Scale Slider. Set Brightness to 50% and Opacity to 100%.

How can I restore contact On My Mac?

How can I restore contact On My Mac? The account is listed under accounts but it seems there is nothing is in it. My Contacts window only shows iCloud and Smart Groups.

Open System Preferences > iCloud
Make sure Contacts is selected.

What is the best 'cleaning system' for the Mac?

What do you recommend as the best 'cleaning system' for the Mac!

How to maintain a Mac
Make two or more backups of all your files
One backup is not enough to be safe. A copy of a backup doesn't count as another backup; all backups must be made directly from the original data.
Keep at least one backup off site at all times in case of disaster. Backing up to a cloud-data service is one way to accomplish this, but don't rely exclusively on such backups.
In fact, don’t rely exclusively on any single backup method, such as Time Machine.
If you get an indication that a backup has failed, don't ignore it.
Keep your software up to date
In the App Store or Software Update preference pane (depending on the OS version), you can configure automatic notifications of updates to OS X and other Mac App Store products. Some third-party applications from other sources have a similar feature, if you don’t mind letting them phone home. Otherwise you have to check yourself on a regular basis.
Keeping up to date is especially important for complex software that modifies the operating system, such as device drivers. Don't install such modifications unless they're absolutely necessary. Remove them when they are no longer needed. Before installing any Apple update, you must check that all system modifications that you use are compatible. Incompatibility with third-party software is by far the most common cause of difficulties with system updates.
Don't install crapware
...such as “themes,” "haxies," “add-ons,” “toolbars,” “enhancers," “optimizers,” “accelerators,” "boosters," “extenders,” “cleaners,” "doctors," "tune-ups," “defragmenters,” “firewalls,” "barriers," “guardians,” “defenders,” “protectors,” most “plugins,” commercial "virus scanners,” "disk tools," or "utilities." With very few exceptions, such stuff is useless or worse than useless. Above all, avoid any software that purports to change the look and feel of the user interface.
It's not much of an exaggeration to say that the whole "utility" software industry for the Mac is a fraud on consumers. The most extreme examples are the "CleanMyMac," "TuneUpMyMac," and “MacKeeper” scams, but there are many others.
As a rule, you should avoid software that changes the way other software works. Plugins for Photoshop and similar programs are an obvious exception to this rule. Safari extensions, and perhaps the equivalent for other web browsers, are a partial exception. Most are safe, and they're easy to get rid of if they don't work. Some may cause the browser to crash or otherwise malfunction. Some are malicious. Use with caution, and install only well-known extensions from relatively trustworthy sources, such as the Safari Extensions Gallery.
Only install software that is useful to you, not (as you imagine) to the computer. For example, a word processor is useful for writing. A video editor is useful for making movies. A game is useful for fun. But a "cache cleaner" isn't useful for anything. You didn't buy a computer so you could clean caches.
Never install any third-party software unless you know how to uninstall it. Otherwise you may create problems that are very hard to solve. Do not rely on "utilities" such as "AppCleaner" and the like that purport to remove software.
Don't install bad, conflicting, or unnecessary fonts
Whenever you install new fonts, use the validation feature of the built-in Font Book application to make sure the fonts aren't defective and don't conflict with each other or with others that you already have. See the built-in help and this support article for instructions.
Deactivate or remove fonts that you don't really need to speed up application launching.
Avoid malware
"Malware" is malicious software that circulates on the Internet. This kind of attack on OS X was once so rare that it was hardly a concern, but it's now increasingly common and dangerous.
There is some built-in protection against malware, but you can’t rely on it—the attackers are always at least one day ahead of the defense. You can’t rely on third-party "anti-virus" products for protection either. What you can rely on is common-sense awareness—not paranoia, which only makes you more vulnerable.
Never install software from an untrustworthy or unknown source. If in doubt, do some research. Any website that prompts you to install a “codec” or “plugin” that comes from the same site, or an unknown site, is untrustworthy. Software with a corporate brand, such as Adobe Flash Player, must come directly from the developer's website. No intermediary is acceptable, and don’t trust links unless you know how to parse them. Any file that is automatically downloaded from the web, without your having requested it, should go straight into the Trash. A web page that tells you that your computer has a “virus,” or that anything else is wrong with it, is a scam.
In OS X 10.7.5 or later, downloaded applications and Installer packages that have not been digitally signed by a developer registered with Apple are blocked from loading by default. The block can be overridden, but think carefully before you do so.
Because of recurring security issues in Java, it’s best to disable it in your web browsers, if it’s installed. Few websites have Java content nowadays, so you won’t be missing much. This action is mandatory if you’re running any version of OS X older than 10.6.8 with the latest Java update. Note: Java has nothing to do with JavaScript, despite the similar names. Don't install Java unless you're sure you need it. Most people don't.
Don't fill up your disk or SSD
A common mistake is adding more and more large files to your home folder until you start to get warnings that you're out of space, which may be followed in short order by a startup failure. This is more prone to happen on the newer Macs that come with an internal SSD instead of the traditional hard drive. The drive can be very nearly full before you become aware of the problem.
While it's not true that you should or must keep any particular percentage of space free, you should monitor your storage use and make sure you're not in immediate danger of using it up. According to Apple documentation, you need at least 9 GB of free space on the startup volume for normal operation.
If storage space is running low, use a tool such as OmniDiskSweeper to explore the volume and find out what's taking up the most space. Move seldom-used large files to secondary storage.
Relax, don’t do it
Besides the above, no routine maintenance is necessary or beneficial for the vast majority of users; specifically not “cleaning caches,” “zapping the PRAM,” "resetting the SMC," “rebuilding the directory,” "defragmenting the drive," “running periodic scripts,” “dumping logs,” "deleting temp files," “scanning for viruses,” "purging memory," "checking for bad blocks," "testing the hardware," or “repairing permissions.” Such measures are either completely pointless or are useful only for solving problems, not for prevention.
To use a Mac effectively, you have to free yourself from the Windows mindset that every computer needs regular downtime for maintenance such as "defragging" and "registry cleaning." Those concepts do not apply to the Mac platform.
A well-designed computing device is not something you should have to think about much. It should be an almost transparent medium through which you communicate, work, and play. If you want a machine that needs a lot of attention just to keep going, use a PC, or collect antique cars.
The very height of futility is running an expensive third-party application called “Disk Warrior” when nothing is wrong, or even when something is wrong and you have backups, which you must have. Disk Warrior is a data-salvage tool, not a maintenance tool, and you will never need it if your backups are adequate. Don’t waste money on it or anything like it.

Restoring System from Backup

When the mac os x cd installer is running you can go to "Utilities" and "Restore System from Backup". Does this command install snow leopard and then add the time machine files or does it just restore the files (meaning you will have to install Snow Leopard first).

Have a read here How do I restore my entire system?
It restores both the OSX system and the user files (applications and data).
Stefan

Is there any form of system cleanup for mac air

is there any form of system cleanup for mac air

How to maintain a Mac
1. Make redundant backups, keeping at least one off site at all times. One backup is not enough. Don’t back up your backups; make them independent of each other. Don’t rely completely on any single backup method, such as Time Machine. If you get an indication that a backup has failed, don't ignore it.
2. Keep your software up to date. In the Software Update preference pane, you can configure automatic notifications of updates to OS X and other Mac App Store products. Some third-party applications from other sources have a similar feature, if you don’t mind letting them phone home. Otherwise you have to check yourself on a regular basis. This is especially important for complex software that modifies the operating system, such as device drivers. Before installing any Apple update, you must check that all such modifications that you use are compatible.
3. Don't install crapware, such as “themes,” "haxies," “add-ons,” “toolbars,” “enhancers," “optimizers,” “accelerators,” "boosters," “extenders,” “cleaners,” "doctors," "tune-ups," “defragmenters,” “firewalls,” "barriers," “guardians,” “defenders,” “protectors,” most “plugins,” commercial "virus scanners,” "disk tools," or "utilities." With very few exceptions, this stuff is useless, or worse than useless. Above all, avoid any software that purports to change the look and feel of the user interface.
The more actively promoted the product, the more likely it is to be garbage. The most extreme example is the “MacKeeper” scam.
As a rule, the only software you should install is that which directly enables you to do the things you use a computer for — such as creating, communicating, and playing — and does not modify the way other software works. Use your computer; don't fuss with it.
Safari extensions, and perhaps the equivalent for other web browsers, are a partial exception to the above rule. Most are safe, and they're easy to get rid of if they don't work. Some may cause the browser to crash or otherwise malfunction. Some are malicious. Use with caution, and install only well-known extensions from relatively trustworthy sources, such as the Safari Extensions Gallery.
Never install any third-party software unless you know how to uninstall it. Otherwise you may create problems that are very hard to solve.
4. Beware of trojans. A trojan is malicious software (“malware”) that the user is duped into installing voluntarily. Such attacks were rare on the Mac platform until sometime in 2011, but are now increasingly common, and increasingly dangerous.
There is some built-in protection against downloading malware, but you can’t rely on it — the attackers are always at least one day ahead of the defense. You can’t rely on third-party protection either. What you can rely on is common-sense awareness — not paranoia, which only makes you more vulnerable.
Never install software from an untrustworthy or unknown source. If in doubt, do some research. Any website that prompts you to install a “codec” or “plugin” that comes from the same site, or an unknown site, is untrustworthy. Software with a corporate brand, such as Adobe Flash Player, must be acquired directly from the developer. No intermediary is acceptable, and don’t trust links unless you know how to parse them. Any file that is automatically downloaded from a web page without your having requested it should go straight into the Trash. A website that claims you have a “virus,” or that anything else is wrong with your computer, is rogue.
In OS X 10.7.5 or later, downloaded applications and Installer packages that have not been digitally signed by a developer registered with Apple are blocked from loading by default. The block can be overridden, but think carefully before you do so.
Because of recurring security issues in Java, it’s best to disable it in your web browsers, if it’s installed. Few websites have Java content nowadays, so you won’t be missing much. This action is mandatory if you’re running any version of OS X older than 10.6.8 with the latest Java update. Note: Java has nothing to do with JavaScript, despite the similar names. Don't install Java unless you're sure you need it. Most people don't.
5. Don't fill up your boot volume. A common mistake is adding more and more large files to your home folder until you start to get warnings that you're out of space, which may be followed in short order by a boot failure. This is more prone to happen on the newer Macs that come with an internal SSD instead of the traditional hard drive. The drive can be very nearly full before you become aware of the problem. While it's not true that you should or must keep any particular percentage of space free, you should monitor your storage consumption and make sure you're not in immediate danger of using it up. According to Apple documentation, you need at least 9 GB of free space on the startup volume for normal operation.
If storage space is running low, use a tool such as the free application OmniDiskSweeper to explore your volume and find out what's taking up the most space. Move rarely-used large files to secondary storage.
6. Relax, don’t do it. Besides the above, no routine maintenance is necessary or beneficial for the vast majority of users; specifically not “cleaning caches,” “zapping the PRAM,” "resetting the SMC," “rebuilding the directory,” "defragmenting the drive," “running periodic scripts,” “dumping logs,” "deleting temp files," “scanning for viruses,” "purging memory," "checking for bad blocks," "testing the hardware," or “repairing permissions.” Such measures are either completely pointless or are useful only for solving problems, not for prevention.
The very height of futility is running an expensive third-party application called “Disk Warrior” when nothing is wrong, or even when something is wrong and you have backups, which you must have. Disk Warrior is a data-salvage tool, not a maintenance tool, and you will never need it if your backups are adequate. Don’t waste money on it or anything like it.

Restoring system defaults on MAC

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