When Updatind any OS for iMac, is it better to do it by "Update Software" or erasing the disk?
I had this wondering when Mountain Lion came Out, now that OS X Mavericks it's coming soon I'm not quit sure what kind of process is better for my iMac. The Fact is that my iMac is getting a little bit slow (since iTunes updates began to come out last year) and I dont know if when I do the software update it would get faster or would still have the same speed problems.... So I thought it may be good to erase the disk before updating...
Help Plz!
FelipeOrtiz wrote:
The Fact is that my iMac is getting a little bit slow
You might troubleshoot that issue now...
Make sure you have neough free disk space. Rule of thumb about 10% free minimum.
What happens you login into another user, like Guest. Or better yet, try starting in Safe Mode and see if the slowness still occurs?
Restart holding the "shift" key.
(Expect it to take longer to start this way because it runs a directory check first.)
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My old computer is spoilt. so i bought a new one. now when i try to sync my iPodtouch with my new computer it says "do u wanna erase" the things on my iPod. i clicked NO. but i really wanna update my iPod to io5 but i can't as i dont want to lose my stuff
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HT4906 Erase the disk for more space but ilife software are all missing!!!
Hey, I just erase the disk for more space, when I reinstall mountain lion, the I life software are all missing! And in app store it shows up that I need to buy them! So ridiculous !!! Why I can use them before
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Are there any viruses for iMac late 2013?
I bought an iMac 27 late 2013. My first apple anything. I was told by the B/B sales person that I needed webroot for anti-virus protection. I got it and now I am not sure if I need it. I have read a few articles and watched some you tube vids from 2010. What they all claim is there were no viruses at that time and that buying a program to prevent a virus was a waste of money since there was nothing at that point. I can't find any thing on a virus for the iMac 27. Any one heard different ?
Mac users often ask whether they should install "anti-virus" software. The answer usually given on ASC is "no." The answer is right, but it may give the wrong impression that there is no threat from what are loosely called "viruses." There is a threat, and you need to educate yourself about it.
1. This is a comment on what you should—and should not—do to protect yourself from malicious software ("malware") that circulates on the Internet and gets onto a computer as an unintended consequence of the user's actions. It does not apply to software, such as keystroke loggers, that may be installed deliberately by an intruder who has hands-on access to the computer, or who has been able to log in to it remotely. That threat is in a different category, and there's no easy way to defend against it.
The comment is long because the issue is complex. The key points are in sections 5, 6, and 10.
OS X now implements three layers of built-in protection specifically against malware, not counting runtime protections such as execute disable, sandboxing, system library randomization, and address space layout randomization that may also guard against other kinds of exploits.
2. All versions of OS X since 10.6.7 have been able to detect known Mac malware in downloaded files, and to block insecure web plugins. This feature is transparent to the user. Internally Apple calls it "XProtect."
The malware recognition database used by XProtect is automatically updated; however, you shouldn't rely on it, because the attackers are always at least a day ahead of the defenders.
The following caveats apply to XProtect:
☞ It can be bypassed by some third-party networking software, such as BitTorrent clients and Java applets.
☞ It only applies to software downloaded from the network. Software installed from a CD or other media is not checked.
As new versions of OS X are released, it's not clear whether Apple will indefinitely continue to maintain the XProtect database of older versions such as 10.6. The security of obsolete system versions may eventually be degraded. Security updates to the code of obsolete systems will stop being released at some point, and that may leave them open to other kinds of attack besides malware.
3. Starting with OS X 10.7.5, there has been a second layer of built-in malware protection, designated "Gatekeeper" by Apple. By default, applications and Installer packages downloaded from the network will only run if they're digitally signed by a developer with a certificate issued by Apple. Software certified in this way hasn't necessarily been tested by Apple, but you can be reasonably sure that it hasn't been modified by anyone other than the developer. His identity is known to Apple, so he could be held legally responsible if he distributed malware. That may not mean much if the developer lives in a country with a weak legal system (see below.)
Gatekeeper doesn't depend on a database of known malware. It has, however, the same limitations as XProtect, and in addition the following:
☞ It can easily be disabled or overridden by the user.
☞ A malware attacker could get control of a code-signing certificate under false pretenses, or could simply ignore the consequences of distributing codesigned malware.
☞ An App Store developer could find a way to bypass Apple's oversight, or the oversight could fail due to human error.
Apple has so far failed to revoke the codesigning certificates of some known abusers, thereby diluting the value of Gatekeeper and the Developer ID program. These failures don't involve App Store products, however.
For the reasons given, App Store products, and—to a lesser extent—other applications recognized by Gatekeeper as signed, are safer than others, but they can't be considered absolutely safe. "Sandboxed" applications may prompt for access to private data, such as your contacts, or for access to the network. Think before granting that access. Sandbox security is based on user input. Never click through any request for authorization without thinking.
4. Starting with OS X 10.8.3, a third layer of protection has been added: a "Malware Removal Tool" (MRT). MRT runs automatically in the background when you update the OS. It checks for, and removes, malware that may have evaded the other protections via a Java exploit (see below.) MRT also runs when you install or update the Apple-supplied Java runtime (but not the Oracle runtime.) Like XProtect, MRT is effective against known threats, but not against unknown ones. It notifies you if it finds malware, but otherwise there's no user interface to MRT.
5. The built-in security features of OS X reduce the risk of malware attack, but they are not, and never will be, complete protection. Malware is a problem of human behavior, and a technological fix is not going to solve it. Trusting software to protect you will only make you more vulnerable.
The best defense is always going to be your own intelligence. With the possible exception of Java exploits, all known malware circulating on the Internet that affects a fully-updated installation of OS X 10.6 or later takes the form of so-called "Trojan horses," which can only have an effect if the victim is duped into running them. The threat therefore amounts to a battle of wits between you and the scam artists. If you're smarter than they think you are, you'll win. That means, in practice, that you always stay within a safe harbor of computing practices. How do you know when you're leaving the safe harbor? Below are some warning signs of danger.
Software from an untrustworthy source
☞ Software of any kind is distributed via BitTorrent, or Usenet, or on a website that also distributes pirated music or movies.
☞ Software with a corporate brand, such as Adobe Flash Player, doesn't come directly from the developer’s website. Do not trust an alert from any website to update Flash, or your browser, or any other software.
☞ Rogue websites such as Softonic and CNET Download distribute free applications that have been packaged in a superfluous "installer."
☞ The software is advertised by means of spam or intrusive web ads. Any ad, on any site, that includes a direct link to a download should be ignored.
Software that is plainly illegal or does something illegal
☞ High-priced commercial software such as Photoshop is "cracked" or "free."
☞ An application helps you to infringe copyright, for instance by circumventing the copy protection on commercial software, or saving streamed media for reuse without permission.
Conditional or unsolicited offers from strangers
☞ A telephone caller or a web page tells you that you have a “virus” and offers to help you remove it. (Some reputable websites did legitimately warn visitors who were infected with the "DNSChanger" malware. That exception to this rule no longer applies.)
☞ A web site offers free content such as video or music, but to use it you must install a “codec,” “plug-in,” "player," "downloader," "extractor," or “certificate” that comes from that same site, or an unknown one.
☞ You win a prize in a contest you never entered.
☞ Someone on a message board such as this one is eager to help you, but only if you download an application of his choosing.
☞ A "FREE WI-FI !!!" network advertises itself in a public place such as an airport, but is not provided by the management.
☞ Anything online that you would expect to pay for is "free."
Unexpected events
☞ A file is downloaded automatically when you visit a web page, with no other action on your part. Delete any such file without opening it.
☞ You open what you think is a document and get an alert that it's "an application downloaded from the Internet." Click Cancel and delete the file. Even if you don't get the alert, you should still delete any file that isn't what you expected it to be.
☞ An application does something you don't expect, such as asking for permission to access your contacts, your location, or the Internet for no obvious reason.
☞ Software is attached to email that you didn't request, even if it comes (or seems to come) from someone you trust.
I don't say that leaving the safe harbor just once will necessarily result in disaster, but making a habit of it will weaken your defenses against malware attack. Any of the above scenarios should, at the very least, make you uncomfortable.
6. Java on the Web (not to be confused with JavaScript, to which it's not related, despite the similarity of the names) is a weak point in the security of any system. Java is, among other things, a platform for running complex applications in a web page, on the client. That was always a bad idea, and Java's developers have proven themselves incapable of implementing it without also creating a portal for malware to enter. Past Java exploits are the closest thing there has ever been to a Windows-style virus affecting OS X. Merely loading a page with malicious Java content could be harmful.
Fortunately, client-side Java on the Web is obsolete and mostly extinct. Only a few outmoded sites still use it. Try to hasten the process of extinction by avoiding those sites, if you have a choice. Forget about playing games or other non-essential uses of Java.
Java is not included in OS X 10.7 and later. Discrete Java installers are distributed by Apple and by Oracle (the developer of Java.) Don't use either one unless you need it. Most people don't. If Java is installed, disable it—not JavaScript—in your browsers.
Regardless of version, experience has shown that Java on the Web can't be trusted. If you must use a Java applet for a task on a specific site, enable Java only for that site in Safari. Never enable Java for a public website that carries third-party advertising. Use it only on well-known, login-protected, secure websites without ads. In Safari 6 or later, you'll see a lock icon in the address bar with the abbreviation "https" when visiting a secure site.
Stay within the safe harbor, and you’ll be as safe from malware as you can practically be. The rest of this comment concerns what you should not do to protect yourself.
7. Never install any commercial "anti-virus" (AV) or "Internet security" products for the Mac, as they are all worse than useless. If you need to be able to detect Windows malware in your files, use one of the free security apps in the Mac App Store—nothing else.
Why shouldn't you use commercial AV products?
☞ To recognize malware, the software depends on a database of known threats, which is always at least a day out of date. This technique is a proven failure, as a major AV software vendor has admitted. Most attacks are "zero-day"—that is, previously unknown. Recognition-based AV does not defend against such attacks, and the enterprise IT industry is coming to the realization that traditional AV software is worthless.
☞ Its design is predicated on the nonexistent threat that malware may be injected at any time, anywhere in the file system. Malware is downloaded from the network; it doesn't materialize from nowhere. In order to meet that nonexistent threat, commercial AV software modifies or duplicates low-level functions of the operating system, which is a waste of resources and a common cause of instability, bugs, and poor performance.
☞ By modifying the operating system, the software may also create weaknesses that could be exploited by malware attackers.
☞ Most importantly, a false sense of security is dangerous.
8. An AV product from the App Store, such as "ClamXav," has the same drawback as the commercial suites of being always out of date, but it does not inject low-level code into the operating system. That doesn't mean it's entirely harmless. It may report email messages that have "phishing" links in the body, or Windows malware in attachments, as infected files, and offer to delete or move them. Doing so will corrupt the Mail database. The messages should be deleted from within the Mail application.
An AV app is not needed, and cannot be relied upon, for protection against OS X malware. It's useful, if at all, only for detecting Windows malware, and even for that use it's not really effective, because new Windows malware is emerging much faster than OS X malware.
Windows malware can't harm you directly (unless, of course, you use Windows.) Just don't pass it on to anyone else. A malicious attachment in email is usually easy to recognize by the name alone. An actual example:
London Terror Moovie.avi [124 spaces] Checked By Norton Antivirus.exe
You don't need software to tell you that's a Windows trojan. Software may be able to tell you which trojan it is, but who cares? In practice, there's no reason to use recognition software unless an organizational policy requires it. Windows malware is so widespread that you should assume it's in everyemail attachment until proven otherwise. Nevertheless, ClamXav or a similar product from the App Store may serve a purpose if it satisfies an ill-informed network administrator who says you must run some kind of AV application. It's free and it won't handicap the system.
The ClamXav developer won't try to "upsell" you to a paid version of the product. Other developers may do that. Don't be upsold. For one thing, you should not pay to protect Windows users from the consequences of their choice of computing platform. For another, a paid upgrade from a free app will probably have all the disadvantages mentioned in section 7.
9. It seems to be a common belief that the built-in Application Firewall acts as a barrier to infection, or prevents malware from functioning. It does neither. It blocks inbound connections to certain network services you're running, such as file sharing. It's disabled by default and you should leave it that way if you're behind a router on a private home or office network. Activate it only when you're on an untrusted network, for instance a public Wi-Fi hotspot, where you don't want to provide services. Disable any services you don't use in the Sharing preference pane. All are disabled by default.
10. As a Mac user, you don't have to live in fear that your computer may be infected every time you install software, read email, or visit a web page. But neither can you assume that you will always be safe from exploitation, no matter what you do. Navigating the Internet is like walking the streets of a big city. It's as safe or as dangerous as you choose to make it. The greatest harm done by security software is precisely its selling point: it makes people feel safe. They may then feel safe enough to take risks from which the software doesn't protect them. Nothing can lessen the need for safe computing practices. -
How do I reformat hard drive when I can't erase the disk?
Machine: imac, OS 10.6.8
Initial Problem: Finder kept crashing for all users immediately after start up. As a result I was unable to try trashing finder preferences as recommended in this forum and elsewhere.
Attempted solutions:
1. Initially seemed unable to boot from Snow Leopard Installation Disk
2. Connected to another imac using firewire and booting problem computer into target mode
3. Ran Techtool pro from master machine. Hard drive and hardware fine but reported need to format disk on target machine.
4. Tried to install new os onto target drive using disk drive on master machine. Error message reported being unable to find target drive, even though it was showing on desktop of master machine
5. Tried to erase disk using disk utility on master machine, but error message stating unable to unmount target drive
6. Successfully rebooted using snow leopard installation disk, but unable to instal. Error message stated that the computer was not available. i.e. it had the yellow triangle with exclamation masrk
7. Tried to erase hard drive using disk utility from installation disk, but was unable to do so. The process commenced to unmount the disk, started to erase but stopped before task completed. Tried a second time with same result.
Obviously the machine needs complete reformatting. I made a backup before starting this series of unsuccessful attempts. I suspect that I need to use terminal from the installation disk, but I am not sure which terminal command to use.
Can anyone tell me? Or have I overlooked some simpler solution?Install or Reinstall Lion/Mountain Lion from Scratch
Be sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard drive.
Boot to the Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Erase the hard drive:
1. Select Disk Utility from the main menu and click on the Continue button.
2. After DU loads select your startup volume (usually Macintosh HD) from the
left side list. Click on the Erase tab in the DU main window.
3. Set the format type to Mac OS Extended (Journaled.) Optionally, click on
the Security button and set the Zero Data option to one-pass. Click on
the Erase button and wait until the process has completed.
4. Quit DU and return to the main menu.
Reinstall Lion/Mountain Lion: Select Reinstall Lion/Mountain Lion and click on the Install button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible
because it is three times faster than wireless. -
I'm trying to use Time Machine on my Macbook (which is a year old) to back up onto a 1Tb external hard drive. I have 860 Gb free on the hard drive. But for some reason Time machine presents me with the statement above. How can I back-up my laptop without clearing out the data I already have on the hard drive?
Time Machine must back up to a hard drive that has been formatted in Mac OS Extended (Journaled). Your drive is likely formatted in FAT 32.
If you want to use the drive for Time Machine backups, you will have to erase it and reformat using Disk Utility on your Mac.
First, move the files that you do not want to lose to another temporary location and test to make sure they are OK.
Second, erase the drive that you want to use for Time Machine backups and format it for Mac OS Extended (Journaled).
Third, move the files back to the hard drive. Test to make sure they are OK. When you are sure that the files are safe, you can erase them from their former "temporary" location. (Although I do wonder how you are backing up these files).
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restart your computer.
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Are there any workarounds for iMacs not having flash?
I recently purchased a new iMac and browsing the web/web research has been a challenge. Most often than not while browsing safari I run into a limitation due to the lack of adobe flash support. Last night my wife spent a half hour filling out an application and couldn't complete it due to a flash required segment. She had to redo it on our old dell laptop. Is this something I'm just going to have to deal with if I keep my iMac?
Get the installer here, then close any browsers and install.
http://www.adobe.com/products/flashplayer/distribution3.html
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If there are two serial numbers then you will use the one of them designated for the program you are trying to activate.
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Before ios 7, photos that I took on my iphone 5 would go from camera roll to photo stream on my phone and then show up in my Photo Stream folder on my pc within a few seconds. Now they no longer auto sync to my Photo Stream folder on my pc. I know about the new iCloud Photos folder in my pc but the photos do not show up until I manually open the iCloud panel, uncheck the photos button, hit apply, then recheck the photos button and hit apply again. Why do I have to do all of this when it used to be automatic? Is the old Photo Stream folder on my pc dead now? Anyone else having this problem?
I HAVE RESOLVED THIS!! The problem was that I was signed in to iCloud on my iphone with an old Apple ID and using a different Apple ID on my pc. I signed out of iCloud on my phone, then re-signed in with the same id as the iCloud on my pc. Presto chango. All is well.
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I'm left handed and work on a Cintiq. Whenever I need to choose a brush or scroll up or down layers, or use anything with a scrollbar really, my hand (the one holding the stylus) is blocking the view. This is not a problem that right handed users encounter because everything is conceived specifically for them but I'm quite sure a lot of left handed users working on pen displays are as frustrated by this oversight as I am. It would be really nice if anyone, especially Adobe, could come up with a solution for this issue. Maybe there's already something out there that I'm unaware of?
A Cloud subscription allows you to use either or both platforms. Since you are allowed to have two working installations you could have one of each with the Cloud.
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Help me please!
Do you currently have a credit card set up in your iTunes store Enter Payment Information screen?
If so, grab a recent statement for that card and check to make sure that the address that shows up in your Enter Payment Information screen exactly matches the address showing on your credit card statement. For example, if your address in the credit card statement says "Street", the iTunes screen has to also say "Street" (Not St or Str.) Also match the capitalisation of the address on your statement. (If it says STREET in the statement make it say STREET in the iTunes screen, not Street or street.)
Also make sure that your name in the iTunes screen exactly matches the one in your statement. (Say, if you've got a middle initial in the credit card statement name, you need one in the iTunes screen.)
After doing that, does that get you past the invalid address thing?
If not, there's some additional suggestions in the following post:
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