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- Fusion Drive and Bootcamp
Prior to the automation software, this type of data manipulation was done manually. It needs the software to run the automated storage tiering to make it a true Fusion Drive. If you are installing both a new SSD and a new platter-based drive into, you can put your original drive in an external enclosure , and your data will be there, out of the way. At this time, you absolutely need to download OS X This is the only way to assure you have the correct version of Disk Utility on your recovery partition.
The Mountain Lion install package will show up in the Applications folder once downloaded. Move it to your desktop. See our video page for our step-by-step instructions on installing one or both drives into your machine. Boot the machine while holding down the Option key at startup and selecting the external hard drive or USB flash drive with the Step 9 — Open Terminal.
If you installed at least one brand new drive, you will likely get a message about a disk being unreadable. This will have the command-line version of Disk Utility diskutil that lists all the disks attached to your computer. Take note of these ID numbers. You will need to do two things here. First, copy the long alphanumeric string for the Logical Volume Group, then note the Free Space for it.
You will need both of these for the next step. In Terminal, type: This command creates a volume on the Fusion array where you can place your files. Once you have this information entered, hit Return and let it do its thing; the Fusion Drive will then be available in the Finder. Now that we have created the CoreStorage volume named Fusion, we can now install the OS and bring over your data. Follow the prompts for installation, choosing your new Fusion drive as the destination. You will need an Internet connection to do this; an Ethernet connection is preferable, though you will also be able to use an AirPort connection, albeit at slower speeds.
As part of the setup for your new installation, you will be asked if you wish to import data from another disk; you will want to. Attach and select your clone or Time Machine backup and Migration Assistant will bring over your data. Once migration has completed, shut down your computer and disconnect your clone. At this point, you will have OS X running on a Fusion drive on your computer. You can now use it like you would any other drive. As with any drive setup, there are pros and cons to a Fusion array.
The pros, as mentioned at the beginning of the article are that it appears single volume and works automatically to keep the best speed. However, there are a couple of cons that you should also be aware of. While a backup plan for your computer is something you should have anyway , this becomes even more important for Fusion drive equipped Macs. The way Fusion is set up, if either the hard drive or the SSD fails, the data on both drives is lost.
Having a reliable, frequent backup plan will be essential in protecting against data loss. Apple claims near-SSD performance for Fusion-equipped drives. For casual use email, Web browsing, basic iPhoto use, etc. From testing both in-house and by Lloyd Chambers of Mac Performance Guide , a Fusion drive will first fill the faster SSD portion, then start filling the slower hard drive.
The trouble comes when you start working with larger files, such as with pro audio, video and large-scale photo work. Often, these files far surpass the 4GB size, so you will see fast SSD transfer speeds followed by a precipitous drop in speed when it transfers over to the hard drive. Name required. Email required. Leave this field empty.
Notify me of follow-up comments by email. Notify me of new posts by email. This may already have been addressed, but: I need speed, but I also need space. Any advice? Fusion drives are a very nice upgrade for consumers and select prosumers. I wont be doing the drive install myself not that im not technically inclined, just simply wont to take any risks. Any thoughts as to why it might be freezing up on me? Dear friend, have U resolve it?
I have tried White MacBook Late. I resolve it!!! Install MLpostfactor!! I successfully setup a Fusion drive with a mb flash drive from OWC and a GB Seagate drive with a data doubler bracket in the optical bay. It runs fine as a single drive, but now the fan runs constantly. Is there a fix for this? For further troubleshooting, please feel free to contact our Technical Support Department at 1 , via email or live chat. Just wondering if a rpm drive is too much for the MBP. Perhaps a lower rpm drive would run cooler?
Never had an issue with overheating. POSIX reports: Invalid argument. We did a bit of digging online and the POSIX error would seem to be an issue of how the drive is being addressed. I recently did a clean install where I redownloaded and reinstalled Would I have the correct version of Disk Utility to skip steps 2 through 6, or would I still need to download Do you know what could possibly be the cause of this? This could be a sign of a bad or failing drive.
We would recommend to run a disk check in Disk Utility. I need some help. Now that we have created the Fusion volume, we can now install the OS and bring over your data. Anyone one can help me with this? I just want to install the mountain lion and enjoy my fusion. If you require more immediate and specific technical support assistance to resolve a matter you are currently experiencing, we encourage you to contact our technical support department via: Live Chat E-mail or telephone at It sounds a lot like steps 12 and 13 were either skipped or errored out somehow.
Open Terminal and try those two steps again making sure that your terminal window states all the steps shown in the image after Step Following this guide to create a DIY Fusion drive on a Mac mini worked great, but now I have two identical Macintosh HD disk icons listed on the boot screen holding down Alt at startup.
Both icons load OSX. Is there any way to hide one of these icons? I want to know that too! Can that one be deleted? But maybe someone has a better idea? Having two volumes from the Fusion drive show up on the boot selector screen is normal. There unfortunately is no way of hiding one of the volumes.
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So how does Apple do that: Is it really necessary to have an EFI partition on the second drive? I also notice that on a genuine Apple Fusion drive, I can change the icon of the Macintosh HD logical volume in finder and then the new icon shows up on the boot screen, but on my DIY fusion drive, if I change the icon of the Macintosh HD logical volume in finder, on the boot screen I still get two of the standard Macintosh HD disk drive icons.
I attempted to change the icon of only the SSD comprising a part of my DIY fusion drive so I could possibly identify which of the two Macintosh HD icons is which at boot, but once the volumes are fused together this appears to be impossible. At this time we have no supported way of changing the boot selector drive icon for the Fusion Drive. Apple unfortunately does not provide many details about the inner workings on their Fusion drives.
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When using boot camp on a Fusion drive the boot camp assistant will partition the HDD and leave the fusion partition alone. This worked for me. I was not able to delete it in the partition menu, but instead was able to erase it in the format menu. It then appeared as a separate partition. Maybe I lost MB of storage, but it is gone.
But on the DIY fusion drive, this does not work. Any ideas? Did this with a late unibody macbook non-pro and I am less than a genius. Used a Samsung gig ssd and wd scorpio blue rpm gig hdd. Love this upgrade, comparable to going from iPhone 2g straight to iPhone 5 ;. Reinstalling ML I think I succeeded having a working Fusion Drive and an bootable Recovery partition Command-R by doing the following:. Boot from the Install Instead use: This way you leave the Recovery HD Disk0s3 intact. Follow the guide from step 12 9.
I guess prior to my step 6 you have to partition you SSD to just add the last partition in Disk Utility: Anyone tried that yet? I personally think Boot Camp should let us decide where to place the Windows partition. I was thinking about using this setup on my base-model late MBP. Thus resulting in a 1. Very interesting idea. Right now my startup disk is the GB in the optical bay. Seems to be working fine after I tweaked the wake on sleep setting. I removed the optical drive and installed the SSD then went through the steps listed above to create a Fusion drive my other drive is a 2 TB Hitachi that came installed in the iMac.
The only hiccup is that I ran a BlackMagic speed test on the Fusion and was disappointed with the results. BlackMagic uses incompressible data in its testing. On a SandForce-based drive, this would report lower speeds, since the Durawrite technology used in the Sandforce controller compresses data in part to achieve its speed. The BlackMagic test is good for a worst case scenario of write speeds.
Raw video capture deals with compressible data… whereas conversion and editing of already compressed video file types is dealing with incompressible data. I have read with great interest this great post and all comments. Thanks everyone for all the great information.
Everything worked fine and I immediately noticed the system was faster than ever. Hi from France, First, thank you very much for a very interesting and technical post. I am actually running Snow Leopard on my iMac Do you think it is possible to use some 1T and a SSD installed in the same enclosure connected to my iMac with firewire to set up an external Fusion Drive running Mountain Lion I have I would like to do this for testing purposes, if it works nicely it would be like having 2 possibilities to start from: Not to worry about datas.
Thanks again Jean. Thank you for the detailed info. Please let me know if doing vice versa is better or this idea is the logical one. My question is: Did anyone try this disk for fusion drive before?go to link
Fusion Drive and Bootcamp | Twocanoes Software
Do you think it would cause any problem for fusion setup? Or can I do it without any hesitation? Thank you for the information Michael. Under these circumstances what would you suggest me to do? Very interesting article! I still have a doubt: For hardware, the only thing I can see is: Is it the only constraint? Of course you need latest Do you guys know? The Mac that you can install OS Can I use a 64gb SSD? On the other end, will using a gb SSD give noticeably better performance than a gb?
In a gb or larger SSD configuration, is there still only 4gb of write space?
Fusion Drive and Bootcamp
Storage capacity of the SSD generally does not affect performance of the drive as much as Hard Drive size matters. I ran black magic to get a speed test of sorts and got SE very unsurprising numbers. After upgrading to Or should I make the fusion drive over again from os x I just want to make sure I do have the true fusion drive. OS X I thought its supposed to be a single volume? And where does the Recovery Partition gone to? Apple seems to have removed the recovery partition from the Startup Manager. The Fusion drive should be showing up as a single drive in the Startup Manager.
It would be best to verify in Disk Utility only 1 partition is created. If you are unsure I would recommend running tests on the new drive to see if it is behaving like a Fusion drive should. I hope that helps. Can you confirm this? Great question and sorry for the delayed response.
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- How Do I Create A True DIY Fusion Drive?!
Through our testing we have not seen any proof of smart data migration. Is that not possible? This is an odd issue. It is very important to make sure you do not have any typos with spacing or the groupstring. If the issue persists the best thing to try is to delete the CoreStorage logical volume group and try it again. To delete a logical volume group use the following command line: Running a verify disk on the drives from Disk Utility or an integrity verification through Speedtools or Drive Genius.
I Erased both the drives, Verfied the Disks after a clean disks, I reran the Process and it gave me the same error. Wonderful article, and I would like to try. My drive as three parts, disk0s1, disk0s2 etc. Each refers to a different partition. Can I use a partition instead of a drive identifier? Creating a fusion drive will only work with the physical disks, there is no way of using a single partition.
When you create a fusion drive it will delete any existing partitions on the drive. I'm not certain, tbh, but I've seen too many tales of woe where people have 'broken' their drives trying to do things like this. This is the kind of task I would test on spares before going anywhere near my main setup. Yes - here be dragons indeed. You can always get back to ground zero from Internet Recovery - but you may end up having to do some nasty single-user or terminal stuff to rebuild the fusion drive.
Look up posts by klanomath on Ask Different for the full skinny on rebuilding them. Ok thanks for the advice, much appreciated! Just to add, this isn't my primary computer anyway, I got it to play around with. Sign up or log in Sign up using Google.
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