Tag Info

Hot answers tagged

16

I recently had the same question and found a command line tool www.smartmontools.org which can be installed via brew: brew install smartmontools you can then run it smartctl -a disk0s3 for the full report where disk0s3 is the disks physical backing which can be found in Disk Utility.app by getting info on the drive. (There must be a way to find this ...


9

You can press the option key to change the behaviour move instead of copy between different volumes copy instead of move on the same volume


7

Place a foot in the door. On each of your disks, create a text file, open it in TextEdit, add some line, and leave the file open unsaved. I think this trick will prevent ejection. Test this trick, try to eject the disk and come here tell us the result. This trick can easily be automated.


6

Yes you can repartition without losing data. Using Disk Utility, perform a repair on your drive to make sure the drive is free of errors (even better, use Diskwarrior if you have a copy). Then unmount your drive but don't eject it. Select the drive in the left hand pane, then go to the Partition tab. On the Partition Layout section click on the "+" to create ...


6

Aside from the speed issues that other people have mentioned, you will quickly kill your thumb drive. One thing that differentiates thumb drives from SSDs is the sophistication of their wear leveling algorithms, the amount of over provisioning of sectors, and the availability to integrate their garbage collection with the host through TRIM commands. ...


5

As long as the drive connects to your MacBook Air via a connection protocol that the Air supports like Thunderbolt or USB 2 or USB 3 you can format the drive and use it with your Mac just fine. To format an external hard drive on your Mac (paraphrased from here): Connect the drive to your Mac Open Applications > Utilities > Disk Utility On the left ...


5

I highly recommend completely backing up the machine before attempting this, either using TM with no exclusions set, or better yet, cloning the whole drive using a program like Carbon Copy Cloner. Unmount the Logical Volume: sudo diskutil unmount force /dev/disk1 Remove the Logical Volume Group and all of its contents: sudo diskutil cs deleteLVG ...


5

If you are facing a healthy file system at the level of its structure and want to find files which have disk faulty blocks, here is how I would proceed: Make a full backup of your disk with Time Machine or Carbon Copy Cloner Check this backup. Run the following heavy and risky (in case you do have bad blocks outside of your filesystem structure) command: ...


5

Restart your Mac into Recovery Mode by pressing cmd R at startup Launch Terminal from the menubar Utilities/Terminal Enter the following command at the Terminal prompt: defaults write com.apple.DiskUtility DUDebugMenuEnabled 1 Press enter Quit Terminal Start the Disk Utility and enable Show every Partition in the Debug menu After a few seconds ...


5

Theoretically everything is fine with your Fusion Drive. Fusion Drives look like this. Disk0 is your SSD with 121 GB and disk1 is your HDD with ~1 TB (~1.121 TB summed up). The larger parts of your SSD (disk0s2) and your HDD (disk1s2) are pooled to a CoreStorage LVG (Fusion Drive: disk3) with a size of 967.8 GB. The rest is reserved for EFIs, a Recovery HD ...


5

I just installed a new 500GB SSD on my MacBook Pro 17" (early 2011) and used Carbon Copy Cloner to clone the contents of my current hard drive to the new one. This works well if you have a working hard drive already in your Mac; and you should clone the drive before installing the new hard drive. You can connect the hard drive externally to your MacBook Pro ...


4

You could do worse than to try dupeGuru, available from Hardcoded Software, I've had very good results with it. It presents numerous options for fine-tuning your search and will perform byte-checking comparisons. In addition to the standard dupeGuru there is a music edition as well as a picture edition for more specific media searches. It's free so give it ...


4

With Yosemite, we're noticing an somewhat, but not totally, subjective slowdown to all aspects of the OS, despite the minimum 4GB RAM. At our school we are actively replacing any faculty member's MBP's internal HDD with a SSD if they complain of 'slowness' and they can demonstrate it concretely. This can be in the form of a slow startup; slow-loading apps; ...


4

Your MacBook isn't the weak link in the chain, it's your external hard disk. The 2011 machines don't support USB 3.0 so you're either using Firewire 800 or USB 2.0 - the fastest throughput you're going to see on FW800 is around 95MB/s for RAID 0 HDDs and SSD devices. More RAM will help with overall speed, 16GB is supported, but fitting an SSD and using it ...


4

It seems that i did it using this post Unable to Resize Partitions and your comment. Although it wasn't obvious for me, what I did was this: diskutil corestorage resizeStack LOGICAL_VOLUME_UUID 0G 0G to expand it to the maximum available space that is free. diskutil corestorage resizeStack can provide with info.


4

Have you considered cloning your current hard drive? With a utility like Carbon Copy Cloner (which you can use for free for 30 days, I think), and an external interface for your new hard drive (USB, Firewire, etc.), you can clone--i.e. make a bit-for-bit copy of your operating system and installed programs--the drive that's currently in your computer. Then, ...


4

Reboot in single user mode by holding the Command + S during boot. When you see a prompt (should look like root # or something similar), type fsck -f and press Return. This is Mac's built-in filesystem consistency check tool and allows you to find and repair errors with the startup file system. Run this command until you don't see **The volume [volume name] ...


4

If your important external drive is mounted on the following mount point: /Volumes/important_disk Then you can protect it against an accidental removal by locking this mount point as opened. For this one very simple method consists in opening Terminal and doing this basic command: $ cd /Volumes/important_disk To get rid of this locking, you might type ...


4

If it's every time you log in, it could be in your login items. Check System Preferences → Users & Groups → Login Items for links to those volumes.


4

You are likely doomed. The store gurus will go over data recovery options and explain they don't fix damaged drives, they are simply going to ask about the status of your backup and whether you want them to test the operation and see if it needs to be exchanged under warranty / AppleCare. Some things to try on dead and near dead drives include putting ...


4

Step 1: Stop doing anything with the computer. Anything you do will likely make the situation worse. Step 2: How much is the data worth to you? It sounds like your drive had a mechanical failure. In this case, your best bet for recovery is to send it off to a professional data-recovery company. This will cost you about a thousand dollars, and they ...


3

Zeroing out a brand new disk is, for the average user, a waste of your time. Writing all those zeros to every single block on the disk is time consuming (and yes, your zero-out time seems to be in the ball park even for USB 3) and has no real benefit. The disk, if new, and freshly HFS+ formatted is ready to go without any additional work. Zeroing out can ...


3

No, it cannot. Actually, there is no there is no drive-bay at all (standard or optical). The traditional, 2.5'' 9.5mm internal notebook drives (whether SSD or HDD) that you're thinking of are not compatible (internally) with this model. This is what the solid state "drive" looks like inside late 2013 models: As you can see from the iFixit photo above, ...


3

Testing cabling is more of an empirical exercise. First you disconnect and reseat both ends of the cable. Next, you put in the new cable and if the problem goes away it was the cable. If you suspect the cable on an intermittent problem you replace the cable and leave it in after reseating doesn't reduce the frequency of the issue. I'd start with reseating ...


3

There are many web pages that will walk you through this process, here is a good one: http://www.maclife.com/article/howtos/how_move_your_documents_folder Basically you create a symbolic link to a folder on an external drive. Here is information on how to use the console to create a symbolic link: ...


3

Simply Turn indexing off for the drive and erase the contents of the journal on the volume. To do so, open Terminal and enter the following command: sudo mdutil -Ei off "/Volumes/Name_of_Drive"; exit You must run this procedure as an admin. Enter your password when prompted. A reboot may be required. Alternatively, as suggested by Simon White, just ...


3

Yes: This is totally possible and you should not have any problems at all. You should consider though, that every Mac has a minimum and a maximum OS X Version which is officially supported.


3

You do know that RAID 0 is only striping and not only provides no redundancy, but increases the risk of data loss as the failure of any single drive can mean the loss of the entire storage pool? RAID 0 is only for increasing read and write speeds, for example for video editing. You need at least RAID 1 or 5 for redundancy. That being said, if you're losing ...


3

I had this problem too, the best thing you can do is replace the harddrive since it will eventually break beyond repair. Macs are quite sensitive to faulty hdd's so there is a good chance you can still use the drive as external drive and get your data from it. so: Replace the drive yourself if you can (ifixit) or have it replaced Get a hard drive enclosure ...


3

I have never, and I mean never, even back to the "classic" Mac O/S days (going back to system 6) partitioned a drive into smaller chunks. Performance gains were supposedly about different parts of a rotational drive being faster than others (EG quicker seek to sectors near the physical hub). There may also have been some O/S speed gains in some O/S if you ...



Only top voted, non community-wiki answers of a minimum length are eligible