Mac os x disk check




Here's a DriveDx triumph. DriveDx showed my just out of AppleCare iMac with two pre-fail conditions for the hard drive. Made appointment and took it to Genius Bar yesterday.

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How to check your Mac's free hard drive space

Tech looked at DriveDx and was very impressed. Even though out of warranty - they replaced the drive without question. God knows how many dollars and troubles DriveDx saved me since I had several vital FinalCut projects on it! I just registered my copy of DriveDx.

Using First Aid

I want to say thanks for saving me a whole lot of time, expense, and aggravation. Lately, the system has been hanging under heavy load. Thanks a million! Bill Kirwin , Information Technology Thaumaturgist. DriveDx exposes low-level information of internal sensors, pre-fail indicators and lifetime accumulators of information that have allowed me to anticipate problems before they affect my system. As a result, I sent external drive back to LaCie for exchange under warranty due to anticipated drive failure.

This is one of the best investments you can make in your system. I recommend it highly. Mark Friedman , photographer. External backup disk will have been gone soon.. It's time for NAS server. Thanks for letting me know BinaryFruit! A couple of days ago, DriveDx warned me pre-failing for one of my external drives.

I don't use it any more for backup. After DriveDx warning, drive behaved abnormally, I heard loud clicking noises and I got warnings from OS X as the drive unmounted abnormally while it was not the case.


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Thanks to DriveDx. Best in its class. Excellent tech support. DriveDx app warned of pending drive failure before it happened. Capitol Macintosh , CapMac. Shout out to BinaryFruit for offering a great product and great service over and beyond what they advertise!


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  8. DriveDX is an awesome app! Martin Zimelka , photographer. Cheaper and better than it's main OS X competitors. Xenophile, Apple computer user since Absolute Must for the OS 'Toolkit'!

    Diagnostics and Repair

    I was having some serious issues with an SSD hybrid drive on my macbook pro, and well since seagate doesn't support mac, their 'seatools' software was useless and required for getting a proper exchange. That one event way more than paid for the price of the software. THIS software generated a report that was acceptable for me to get my exchange, and before the drive died completely. Got my replacement drive and I will most certainly never go back to not having it installed.

    Just in Time! So I decided that I had to replace it. I did that and enclosed the failing disk in an external enclosure to use it some more. A week later I began to have serious issues with the failing disk and ditched it. You can turn local snapshots back on by running:. If you love delving into the nitty-gritty, and especially if you manage remote Macs, you'll find this to be a very useful tool.


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    You can exclude certain files and folders from your Time Machine backups from the Time Machine pane in System Preferences. Naturally, you can also do this from the command line, too. Run this command:. The part stands for the path to a file or folder. For example, if I want to exclude my Downloads folder from Time Machine backups, I would run the following:.

    How to test a drive for defects or problems on a Mac | WD Support

    The tmutil addexclusion command has an interesting property: When you use this command, the item you exclude remains in the Time Machine exclusion list even if you move it, which is not the case when you exclude items from the Time Machine preference pane. If you use the above command with the -p flag, then it will not be sticky, and will be the same as an exclusion you add from the Time Machine preference pane. If you're managing a remote Mac, such as a server, you may want to change Time Machine settings for that computer.

    You can start by finding where Time Machine backups are stored. To change the destination, you can use two commands. First, remove the current destination like this:. In place of , type in the text string returned by the destinationinfo command. Then run this command to set up a new destination disk:.

    You can add multiple destinations as well, since Time Machine can rotate its backups on several disks or volumes. See man tmutil for more on setting up multiple backup destinations. You can now do this without the command line too, see "How to create redundant Time Machine backups. Time Machine saves a lot of backups: You can get a list of all the backups on your Time Machine disk with this command:. If you're curious about how much has changed in your Time Machine backups, there's a command that will let you find out how much of each backup is new.

    Run this command to see the delta between each of the Time Machine backups on your backup disk or volume:. This is not the Backups. Note that this command takes a long time to run, as your Mac has to calculate a lot of information. The tmutil command offers many other options, such as the ability to inherit destinations, perform detailed comparisons of backups, restore items and much more.

    Benchmark Your Mac Disk Speed

    See man tmutil to find out all that you can do. Article via MacWorld. But on all apples I removed corestorage because it becaue unreliable on the long run. This one might contain the old command: Commands to repair permissions are hidden but still exist. Skip to content. Sign up for a GitHub account Sign in.

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    How to Verify and Repair a Disk From the OS X Command Line

    Share Copy sharable link for this gist. Learn more about clone URLs. Download ZIP. Code Revisions 9 Stars Forks Verify and Repair: To repair the drive , you can issue the following command into Terminal: Once booted from OS X recovery, select Terminal from the utilities and then at the unix prompt enter: This should unmount all volumes of the physical drive.

    If still the above method didn't work, then the last option is to force the entire disk to unmount. For that using the terminal application again, enter the following command: This will definetely unmount the entire disk and all its related volume. You can then install all available software updates with the following command: You can also install only the recommended updates with: Control Time Machine from the command line Time Machine is a great tool for ensuring that your data is safe, and it's pretty easy to set up and use.

    The basics Most people won't need to use this command for their backups because the Time Machine interface will suffice. For example, to turn Time Machine on or off, you can run these commands: If you want to run a Time Machine backup right away, on a Mac that either has Time Machine disabled, or, say, just before updating to a new version of OS X, you can run this command: And if you ever want to stop a backup, just run this:

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