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Bài gửiTiêu đề: thủ thuật mac osx   Tue Jun 08, 2010 6:42 pm

Easily Mount an ISO in Mac OS X


Friday, 4 June 2010 03:32 by Davian

If you’re wondering how to mount an ISO image in Mac OS X, it is very easy. For most ISO images you can mount them simply by double-clicking the ISO image file, and it will go through the auto-mounter app within OS X putting it on your desktop. If for whatever reason that doesn’t work there are other methods to mount ISO’s within Mac OS X. In the Terminal type the following command:

hdiutil mount sample.iso

with sample.iso being the path to the image you want to mount. After the checksum is completet, your ISO will appear mounted on your Mac OS X desktop – that’s it. You you can actually mount virtually any other disk image type with hdiutil as well, so give .dmg .img a try too.



Has the ISO file still not mounted on your Mac? Try using Disk Utility, located in the /Applications/Utilities/ directory. After you have launched Disk Utility, navigate from the Disk Utility menu down to “Open Image File” and select your ISO file. The ISO should now appear mounted on the Mac OS desktop.

Tags:


command line, how to, mac os x, tips & tricks

Categories:


Support Incidents | Mac OS X | Third-party Software | Operating System | System Settings | Tips and tricks

Updating your software on Mac OS


Thursday, 13 May 2010 14:25 by Davian

Summary


Apple frequently releases software updates that you can download. The Software Update feature in Mac OS X makes it very easy to determine and get exactly what you need.



Getting updates immediately (Mac OS X v10.3 or later)

1. From the Apple () menu, choose Software Update.



1. Software Update checks for available updates. In the Software Update window, select the items you want to install, then click Install. Usually, you should install all available updates. (Mac OS X v10.3 only: Click the Check Now button.)

2. Enter an administrator account name and password.

3. After installation is complete, restart the computer if required.

You can repeat these steps to see if more updates are now available. Because some software updates are prerequisites for others, you may need to repeat these steps several times to complete the software update sequence.

Note: Mac OS X v10.5 and later can automatically run Software Update checks in the background and let you know when an update is available for your computer.

Getting updates immediately (Mac OS X v10.2.8 or earlier)

1. From the Apple () menu, choose System Preferences.

2. From the View menu, choose Software Update.

3. Click Update Now.

4. In the Software Update window, select the items you want to install, then click Install.

5. Enter an administrator account name and password.

6. After the update is complete, restart the computer if a restart is required.

You can repeat these steps to see if more updates are now available. Because some software updates are prerequisites for others, you may need to repeat these steps several times to complete the software update sequence.

Categories:


Online Services | Remote Services | Support Incidents | Mac OS X | Operating System | System Settings | Tips and tricks

Unable to log in after an upgrade install (Mac OS X 10.5)


Thursday, 13 May 2010 10:38 by Davian

Symptoms


If you perform a Mac OS X 10.5 upgrade installation from a version of Mac OS X that was previously migrated from Mac OS X 10.2.8 or earlier, you may not be able to log in to your user account if the password contains eight or more characters. This article applies to Mac OS X version 10.5 installation discs; this issue should not occur with installation discs that contain Mac OS X version 10.5.1 or later.

Resolution


If you can log in or are logged in

(click on link below) Download and install the Login & Keychain Update 1.0 for Mac OS X 10.5 Leopard to avoid the issue later.



If you are unable to log in

you can use these steps instead:

· Restart in Single User mode (hold Command-S during startup). Note that single-user mode always uses the US English keyboard layout.

· At the prompt, type this followed by Return: mount -uw /

· Type this:

· launchctl load /System/Library/LaunchDaemons/com.apple.DirectoryServices.plist

· Press Return

· Type this, then press Return: ls /Users

· Look at the listing and note the short name (username) of the affected user account.

· Type this:

dscl . -delete /Users/username AuthenticationAuthority


Note: Replace "username" with the affected user account's short name you noted above.

· Press Return

· Type this, followed by Return: passwd username

Note: Replace "username" with the affected user account's short name you noted above.

· At the "New password:" prompt, type the user's password, then Return. Note: It is recommended that the original user's password be used to match the keychain password.

· At the "Retype new password" prompt, type the same password, followed by Return.

· Type this, followed by Return: reboot

Categories:


Recovery | Support Incidents | Mac OS X | Security | System Settings | Tips and tricks

Only installation option may be Erase and Install (Mac OS X 10.5)


Thursday, 13 May 2010 10:00 by Davian

Symptoms


When installing Mac OS X 10.5 Leopard, the only available installation option may be Erase and Install. An alert may appear during installation, such as "You can not install mac os x on this volume with out changing your installation settings...".



Resolution


Check the destination volume for issues

The Leopard Installer checks the available destination disks in the background before listing them in the destination window. If the disk check does not succeed, no message is displayed indicating that an issue has occurred.

Use Disk Utility from the Leopard installation DVD to verify and repair the destination drive (choose it from the Utilities menu while started from the Leopard DVD).

Note: If Disk Utility specifically reports "Incorrect number of Extended Attributes (it should be 0 instead of [some numbers])", do this:


· Quit Disk Utility.

· Choose Startup Disk from the Utilities menu.

· Select your Mac OS X volume (hard drive), and click Restart.

· Log in as an admin user.

· Open Terminal located in (/Applications/Utilities).

·

· Type the following command, followed by Return:

sudo /usr/sbin/fsaclctl -p / -e


· Enter your password when prompted.

· Restart from the Leopard Install DVD.

· From the Utilities menu, open Disk Utility and repair the volume.

· Validate that the volume was repaired.

· Quit Disk Utility.

· Proceed with your Leopard installation.

If Disk Utility reports any other issues that cannot be corrected, backup essential data, then perform an Erase and Install.

Categories:


Recovery | Support Incidents | Mac OS X | Third-party Software | Operating System | System Settings | Tips and tricks

Installer destination window does not show drives (Mac OS X 10.5)


Thursday, 13 May 2010 09:56 by Davian

Symptoms


When installing Mac OS X 10.5 Leopard, destination volumes may not appear in the installation window for a while, even though the volumes are visible while started from Mac OS X 10.4 or in Disk Utility.



Resolution


Wait a few minutes for the volume(s) to appear.

The Mac OS X 10.5 installer window does not show hard drives that are still being checked in the background, and there is no status indicator regarding this. The larger the disk volume, the longer it may take for this to complete. After the disk check has finished, the drive(s) will appear and be available for installation.

Advanced fsck status check

Advanced users who want to check fsck status can follow these steps:

1. Choose Terminal from the Utilities menu.

2. Execute this command:

ps auxc | grep fsck


If this command returns a line of text that includes "fsck", it means that the disk check is still in progress--wait a minute, then try again. If the disk check is finished, the command should return nothing (you will only see a new prompt appear).

Categories:


Support Incidents | Mac OS X | Operating System | Tips and tricks

How to enable the root user (Mac OS)


Thursday, 13 May 2010 09:29 by Davian

Mac OS X v10.6 and later

1. From the Apple menu choose System Preferences....

2. Click on Accounts.



3. Click on the lock and authenticate with an administrator account.

4. Click Login Options....

5. Click the "Edit..." or "Join..." button at the bottom right.



6. Click the "Open Directory Utility..." button.



7. Click the lock in the Directory Utility window.

8. Enter an administrator account name and password, then click OK.

9. Choose Enable Root User from the Edit menu.



10. Enter the root password you wish to use in both the Password and Verify fields, then click OK.





Mac OS X v10.5

1. From the Finder's Go menu, choose Utilities.

2. Open Directory Utility.

3. Click the lock in the Directory Utility window.

4. Enter an administrator account name and password, then click OK.

5. Choose Enable Root User from the Edit menu.

6. Enter the root password you wish to use in both the Password and Verify fields, then click OK.

Mac OS X v10.4.x or earlier

1. Click the Finder icon in the Dock.

2. From the Go menu, choose Applications.

3. Open the Utilities folder.

4. Open the NetInfo Manager utility.

5. Click the lock in the NetInfo Manager window.

6. Enter an administrator account name and password, then click OK.

7. For Mac OS X 10.2 and later, choose Enable Root User from the Security menu.

8. For Mac OS X 10.0 and 10.1, choose Security from the Domain menu, then Enable Root User from the submenu.

9. If you have not previously set a root password, an alert box may appear that says "NetInfo Error," indicating that the password is blank. Click OK.

10. Enter the root password you wish to use and click Set.

11. Enter the password again for verification and click Verify.

12. Click the lock again to prevent changes.

Categories:


Personalization | Support Incidents | Mac OS X | Security | System Settings | Tips and tricks

Administrator user changes to standard (Mac OS X 10.5)


Thursday, 13 May 2010 09:06 by Davian

Symptoms


After performing an upgrade installation (the default type) of Mac OS X 10.5 Leopard, an administrator account may change to a standard one.

Resolution


1. Start from your Mac OS X 10.5 Install DVD. (You do not need to install Leopard again.)

2. From the Utilities menu, choose Reset Password (do not choose Firmware Password Utility).

3. Follow the onscreen instructions to reset the root password (the root account is not the same as your account). Specifically: Select the name of the drive that Mac OS X is installed on, select the user named "System Administrator (root)" from the pop-up menu, type the password in the first field, re-enter the password in the second field, then click the Save button.

4. Restart from your Mac OS X Leopard volume.

5. When the login window appears, select "Other..." and log in as the root user using the password that was created above. Note: If Mac OS X automatically logs in, choose Log Out (name) from the Apple menu to get to the login window.

6. Go to Accounts preferences and check (enable) "Allow user to administer this computer" for the affected user.





7. From the Apple menu, choose Log Out root....



8. Log in as the user account that had this issue. (Your account should now have administrator access.)

9. Use Directory Utility to disable the root user via Directory Utility's Edit menu. You may need to click the lock icon first.







Categories:


Support Incidents | Mac OS X | Operating System | System Settings | Tips and tricks

Resetting the System Management Controller (SMC) (Intel-based Macs)


Thursday, 13 May 2010 08:57 by Davian

Summary


The System Management Controller (SMC) is responsible for many low-level functions on Intel-based Macs. These functions include:

· Responding to presses of the power button

· Responding to display lid opening and closing on portable Macs

· Battery management

· Thermal management

· The SMS (Sudden Motion Sensor)

· Ambient light sensing

· Keyboard backlighting

· Status Indicator Light (SIL) management

· Battery status indicator lights

· Selecting an external (instead of internal) video source for some iMac displays

It is possible that the SMC could encounter a problem that may cause unusual system behavior typically related to the symptoms described below. In some cases, resetting the SMC may be the only correct method to resolve the issue, however, an SMC reset should only be attempted after all other standard troubleshooting has been performed.

Before Resetting the SMC

Try each of the following steps in this order before you reset the SMC. Test the issue after completing each troubleshooting step to determine if the issue still occurs.

1. Press Command + Option + Escape to force quit any application that is not responding.

2. Put your Mac to sleep by choosing the Apple () menu from the upper-left menu bar and then choosing Sleep. Wake the computer after it has gone to sleep.

3. Restart your Mac by by choosing the Apple () menu from the upper-left menu bar and then choosing Restart.

4. Shut down your Mac by by choosing the Apple () menu from the upper-left menu bar and then choosing Shut Down.

If your Mac appears to be running normally but isn't responding, force the computer to shut down by pressing and holding the power button for 10 seconds. Note: You will lose any unsaved work in any open applications.

For Mac portables experiencing issues related to the MagSafe power adapter and/or battery, try:

1. Unplug the MagSafe power adapter from the Mac and the wall power socket for several seconds.

2. Shutdown the Mac. Physically remove and re-insert the battery (if it's removable) and startup the Mac.

If the issue is still not resolved after following the troubleshooting items above, an SMC reset may be necessary.

After performing normal troubleshooting, these symptoms may indicate that an SMC reset may be necessary:

Fans
The computer's fans speed up quickly and remain at high speed.
The computer's fans run at high speed although the computer is not experiencing heavy usage and is properly ventilated.


Lights
The keyboard backlight appears to behave incorrectly (on Mac computers that have this feature).
The Status Indicator Light (SIL) appears to behave incorrectly (on Mac computers that have an SIL).
Battery indicator lights, if present, appear to behave incorrectly (on portables that use non-removable batteries).
The display backlight doesn't respond correctly to ambient light changes on Mac computers that have this feature.


Power
The computer doesn't respond to the power button when pressed.
A portable Mac doesn't appear to respond properly when you close or open the lid.
The computer sleeps or shuts down unexpectedly.
The battery does not appear to be charging properly.
The MagSafe power adaptor LED doesn't appear to indicate the correct activity.


System Performance
The computer is running unusually slowly although it is not experiencing abnormally high CPU utilization.


Video
A computer that supports target display mode does not switch into or out of target display mode as expected.
A computer that supports target display mode switches into or out of target display mode at unexpected times.
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