Is it possible to partition Fusion Drive to separate SSD from HD
Is it possible to partition Fusion Drive to separate SSD from HD?
They are not "partitioned." You have to break the Fusion Drive. I would ask your local Apple Store tech for instructions.
Similar Messages
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Cannot erase/partition Fusion drive
Hi everyone,
When I got my iMac, with a 1TB Fusion drive, I partitioned it, with a small partition running OS X and apps, and another larger one, to contain my user files - photos, documents and so on.
Now I want to sell my iMac, and I want to re-partition my Fusion drive, to only one partition, like when I bought it. But it cannot be done. Se screenshot bellow. Everything is greyed out.
I have tried to boot into reinstall mode, via CMD-R, with no luck.
I have tried running OS X from another USB drive, no luck.
And the one partition listed in the screenshot, won't mount. Have I messed up completely?
Best regards
Soeren VedelBoot into your Recovery HD using Internet Recovery (Command+Option+R). You should see a spinning globe and it should take a few minutes to get to the OS X Utilities menu. This boots into Apple's server.
Open Terminal and type: diskutil cs list
Copy the Logical Volume Group UUID which is a string of letters/numbers/dashes. This should be the 1st line after the above command.
Type: diskutil cs delete <LVG UUID from the previous step> (without the brackets)
After the delete completes open Disk Utility and you may see your two drive (SSD, HDD) in RED. You will be prompted to IGNORE or FIX. Choose FIX to recreate your Fusion Drive.
Close DU and select Reinstall OS X from the menu list. After the reinstall completes Shutdown. Your Mac is now setup to factory OS. -
After attempting secure erase, iMac w/homemade fusion drive won't boot from *anything*
2009 iMac with homemade fusion drive (SSD installed in optical bay). Was working fine with Yosemite until I attempted to secure erase it before giving away the machine.
Now the drive is borked. Disk utility could make no sense of it, can't reformat, it can't repartition it. And now it has completely stopped booting. I cannot even get it to boot of an external USB drive anymore (the original operation was performed while booted from a Yosemite installer drive on a USB stick).
I've reset the PRAM, reset the SMC, and just nothing. All boots are attempted from internal messed up fusion drive, which eventually ends in the "prohibitory sign".
I'm not even sure what to try at this point. Any suggestions out there?Thank you for the reply. I have since resolved the problem, although not in the most satisfactory way.
Here's what I did:
Pulled both drives out of the iMac, put them into a USB dock, and reformatted each one. Both drives appeared at this point to be fine.
Reinstalled both drive into the iMac, and started up from a USB drive. No problem.
Recreated the fusion drive from the terminal. No problem.
Now, because I am a glutton for punishment, I tried wiping the fusion drive again. This time, part way in, it kernel panicked. Luckily, I was able to reboot once again to the external drive.
At this point, the fusion drive was in the exact same messed up state as when I started. Disk Utility app could do nothing with it.
Fortunately, this time I went right to the command line, and was able to fix things up and recreate the fusion drive before anything else bad happened.
I gave up on wiping the drive for now. If I need to do so in the future, I will disable the fusion drive and try to wipe each physical drive separately.
I should note that this iMac has never given a spot of trouble before now, so I am highly suspicious of the way disk utility tries to wipe a fusion drive. I certainly won't try it again. (I don't know if it has ever kernel-panicked before in the 5 years I've owned it). -
Will separating Fusion drive into standalone SSD/HDD void AppleCare?
Since Bootcamp doesn't seem to take advantage of the Fusion drive in any capacity, and I mostly need the bandwidth of the SSD for Windows programs, I was planning on using this tutorial to separate the Fusion drive into a standalone SSD and HDD. (Note: I don't want to run a virtual machine for this, which I've heard uses the Fusion drive fine.) My question is: Does decoupling the hard drives like this violates AppleCare, or could I still receive service if something should go wrong in the future? Thanks.
My guess is sure it would, how can Apple support a machine that has had the hardware tampered with.
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Is it possible on a fusion drive to have Maverick and Windows at the same time? Is it going to work the same way on windows ( I mean as fast as in osx)
Michael Conelly wrote:
After much gnashing of teeth, and a half dozen support calls, I'd all but given up. I finally seem to have solved this though - sort of - by installing windows 8.1 on boot camp on an older iMac, then cloning the bootcamp disk to an external thunderbolt drive via Winclone. That worked seamlessly, sticking to winclone's instructions, and I can boot via EFI to Windows 8.1 on the new iMac. So far so good.
I usually install W8.1 via EFI by using DU and a Free Space partition. The 3TB Fusion is first split into the underlying SSD/HDD physicals. OSX and Windows OSes are installed on SSD via EFI (no BCA). The OSX part and half the HDD are then used to create a new CS volume. The other HDD half becomes NTFS for non-Windows OS files. The Hybrid MBR method is completely unsatisfactory with the 3TB Fusion drive.
How is the TB/Winclone image for performance of the OS (since pagefile.sys is also on the TB)? -
Fusion drive vs ssd 256gb which is better
hoi gang, im in the market for a new mac mini. and i need some help with choosing the right options when buying it.
" i do music " and i need a mini that fast and runs at the highest possible speed when making music. and of course using it for some fotos, emails and yes internet.
so ....
specs im choosing
2.6 ghz
16GB 1600MHz DDR3 SDRAM - 2x8GB
Now here is my problem which one do i choose?
1TB Fusion Drive [Add $250.00]
or
256GB Solid State Drive [Add $300.00]
Remember i need the mac that is the best at everything and speed is important!!!Choose the 256 GB SSD disk if you need more speed. Fusion Drive is a small flash drive and a hard disk that work together, so OS X automatically puts your most used apps and documents on the flash storage.
If you need storage, you can choose the Fusion Drive or the SSD and an external disk -
27" iMac - i7 or fusion drive?
After nearly nine years of using my G5 PPC tower I've decided it's time to move onto a new computer, since I can't upgrade the OS beyond 10.5. I am looking at the 27" iMacs and trying to decide which configuration to choose. I guess I'm trying to decide between the 2.9 GHz model and the 3.4GHz one. (I don't see any value to the 3.2GHz model, since the $200 price diferential over the 2.9 gets only modest bumps to the processor and graphics card.)
I may end up biting the bullet and getting the 3.4GHz to get the i7 processor, and possibly adding the fusion drive for the speedy boot ups. But I wonder if the 2.9GHz model with the fusion drive would be pretty comparible to the i7 3.4GGHz without the fusion drive. The $400 difference between the base 2.9 and the 3.4 could be spent on the external optical drive and RAM.
I have read a lot of speed test on macworld.com, but they don't show the 3.4GGHz model without the fusion drive. The fusion drive sounds good, overall, but may add some complexity to the system, and resulting reliability issues. Despite the shortcomings of standard hard drives, mine has managed to churn away for nearly 9 years, so the technology is fairly reliable. Apple's fusion drive hasn't been around long enough for a good assessment of its reliability.
So I guess the question is, go for the 3.4 GHZ i7 model, with a standard iTB HD, or save some money on the 2.9GHz i5 with the fusion drive. I do use Photoshop and other creative suite products, along with the usual email, web browsing, etc. And, this is primarily for home use.IMO, go for the 3.4 GHZ i7 model, with an 1TB HD, but buy your RAM elsewhere.
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I have a 2012 Mini with a fusion drive that won't boot from a usb cloned drive. It came with 10.8.2 pre installed. I have zapped the PRAM and reset the SMC. Any thoughts?
When I tried using a recently downloaded (from the App store) version of MtLion 10.8.2 (12C60) I could NOT get the new MacMini to install or boot from a USB I had previously made. I was however able to use the Recovery Mode of the MacMini to create a bootable SSD which I had installed. The problem arose when I went back into Recovery DU as it saw the seperate drives (SSD & HD) as a broken Fusion Drive. Interestingly DU from the boot volume had NO issues and reported NO faults. It was the Recovery DU that identified the faulty Fusion Drive configuration. At this point I am definately out of my depth but my speculation is that the Recovery Volume is being used in some fashion to form the method or pattern that DU assigns files to the drives, System Report sees the drives as seperate volumes with all their individual characteristics.
Disk Utility did not make a bootable USB, I don't have or use CCC or Super Duper.
Here is the longer version I've been compiling:
Having bought a late 2012 Mac Mini(6,2) i7 2.66GHZ with the standard 1TB 5400 HD and 4GB of RAM (base model) I immediately decided to install a Mercury Elite 6g 240GB SSD and up the RAM to 16GB. I received both shipments on the same day and had all my new toys in front of me. After following the video advice on OWC’s website for the installation of the second drive I started the mini and formatted the SSD to accept the OS from Recovery on the original HD. This MacMini shipped with 10.8.2 (12C2034) as the OS, the normal build of 10.8.2 is (12C60). Having used Recovery Disk Utility to format the SSD it came back with an error that DU could’t Repair. I went ahead and installed the OS on the SSD and the Mini booted normally from both drives. The issue I encountered with this setup was that iMovie encountered an “unexpected error” and would not save a completed project. I therefore decided to figure the drive issue out because I suspect the new Fusion File Management software didn’t like my configuration with drives that Recovery DU saw as needing to be “fixed”. After spending some time on the phone with both OWC and Apple Support I took the plunge and used Internet Recovery Disk Utility and allowed both drives to be “fixed” after which DU created a Fusion Drive (Logical Drive) that I then ran Repair Disk on and it showed up as a single drive in DU. It works perfectly as described by Apple’s site:
http://support.apple.com/kb/HT5446
Having checked the Link Speed and Negotiated Speed they both show as 6g so I’m pleased not to have lost performance due to it being fuzed to a 3g 5400 drive. The biggest drawback is that Apple’s Fusion Management only allows for 1 additional partition and I would have preferred more than that.
I have sourced some additional information here:
http://blog.macsales.com/15619-special-note-for-adding-an-ssd-to-a-2012-mac-mini ?
http://blog.macsales.com/15619-special-note-for-adding-an-ssd-to-a-2012-mac-mini ?
http://blog.macsales.com/15619-special-note-for-adding-an-ssd-to-a-2012-mac-mini ?
http://blog.fosketts.net/2011/08/05/undocumented-corestorage-commands/
If anyone has a factory Fusion Drive could you please post the Link and Negotiated Speeds of both drives? This information can be found in Apple > About This Mac > More Info… > System Report > Serial ATA and the drives should show up as discrete drives with their info listed separately. -
I'd like to create my own MAC Fusion Drive, but I'm not a dev so I need a little bit of guidance, which would also help a lot of people I'm guessing.
I am trying to follow jollyjinx's instructions, which are not that detailed. Specifically, I am trying to find the names of my two drives and I can only find one. Maybe the drives are not connected in a way to do this I'm not sure. I have a 750GB HDD and an 80GB SSD installed internally in my 2011 Mac Mini. I have been using both drives, SSD for the OS and a handful of common files and the HDD for iPhoto and iTunes libraries. A Fusion drive would be perfect!
When I run dmesg in Terminal, here is what I get:
-bash-3.2# dmesg
PMAP: PCID enabled
Darwin Kernel Version 12.1.0: Tue Aug 14 13:29:55 PDT 2012; root:xnu-2050.9.2~1/RELEASE_X86_64
vm_page_bootstrap: 2003271 free pages and 77497 wired pages
kext submap [0xffffff7f8073e000 - 0xffffff8000000000], kernel text [0xffffff8000200000 - 0xffffff800073e000]
zone leak detection enabled
standard timeslicing quantum is 10000 us
standard background quantum is 2500 us
mig_table_max_displ = 74
TSC Deadline Timer supported and enabled
corecrypto kext started!
Running kernel space in FIPS MODE
Plist hmac value is 735d392b68241ef173d81097b1c8ce9ba283521626d1c973ac376838c466757d
Computed hmac value is 735d392b68241ef173d81097b1c8ce9ba283521626d1c973ac376838c466757d
corecrypto.kext FIPS integrity POST test passed!
corecrypto.kext FIPS AES CBC POST test passed!
corecrypto.kext FIPS TDES CBC POST test passed!
corecrypto.kext FIPS AES ECB AESNI POST test passed!
corecrypto.kext FIPS AES XTS AESNI POST test passed!
corecrypto.kext FIPS SHA POST test passed!
corecrypto.kext FIPS HMAC POST test passed!
corecrypto.kext FIPS ECDSA POST test passed!
corecrypto.kext FIPS DRBG POST test passed!
corecrypto.kext FIPS POST passed!
AppleACPICPU: ProcessorId=1 LocalApicId=0 Enabled
AppleACPICPU: ProcessorId=2 LocalApicId=2 Enabled
AppleACPICPU: ProcessorId=3 LocalApicId=1 Enabled
AppleACPICPU: ProcessorId=4 LocalApicId=3 Enabled
AppleACPICPU: ProcessorId=5 LocalApicId=255 Disabled
AppleACPICPU: ProcessorId=6 LocalApicId=255 Disabled
AppleACPICPU: ProcessorId=7 LocalApicId=255 Disabled
AppleACPICPU: ProcessorId=8 LocalApicId=255 Disabled
calling mpo_policy_init for TMSafetyNet
Security policy loaded: Safety net for Time Machine (TMSafetyNet)
calling mpo_policy_init for Sandbox
Security policy loaded: Seatbelt sandbox policy (Sandbox)
calling mpo_policy_init for Quarantine
Security policy loaded: Quarantine policy (Quarantine)
Copyright (c) 1982, 1986, 1989, 1991, 1993
The Regents of the University of California. All rights reserved.
MAC Framework successfully initialized
using 16384 buffer headers and 10240 cluster IO buffer headers
IOAPIC: Version 0x20 Vectors 64:87
ACPI: System State [S0 S3 S4 S5] (S3)
PFM64 (36 cpu) 0xf10000000, 0xf0000000
[ PCI configuration begin ]
AppleIntelCPUPowerManagement: Turbo Ratios 0057
AppleIntelCPUPowerManagement: (built 13:47:00 Aug 14 2012) initialization complete
console relocated to 0xf60010000
PCI configuration changed (bridge=16 device=5 cardbus=0)
[ PCI configuration end, bridges 13 devices 18 ]
mbinit: done [96 MB total pool size, (64/32) split]
Pthread support ABORTS when sync kernel primitives misused
rooting via boot-uuid from /chosen: 7B269773-B97B-335A-A4EF-A3D6956395BA
Waiting on <dict ID="0"><key>IOProviderClass</key><string ID="1">IOResources</string><key>IOResourceMatch</key><string ID="2">boot-uuid-media</string></dict>
com.apple.AppleFSCompressionTypeZlib kmod start
com.apple.AppleFSCompressionTypeDataless kmod start
com.apple.AppleFSCompressionTypeZlib load succeeded
com.apple.AppleFSCompressionTypeDataless load succeeded
AppleIntelCPUPowerManagementClient: ready
BTCOEXIST off
BRCM tunables:
pullmode[1] txringsize[ 256] reapmin[ 32] reapcount[ 128]
highWaterMark: VO[ 192] VI[ 192] BE[ 192] BK[ 192]
FireWire (OHCI) TI ID 823f built-in now active, GUID c82a14fffeeaff8c; max speed s800.
USBMSC Identifier (non-unique): 1690A44191FF 0x59b 0x370 0x0
USBMSC Identifier (non-unique): AA19164300000896 0x3f0 0xb107 0x8192
Got boot device = IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/EHC1@1D,7/AppleUSBEHCI/U SB FLASH DRIVE@fd133000/IOUSBInterface@0/IOUSBMassStorageClass/IOSCSIPeripheralDeviceNub /IOSCSIPeripheralDeviceType00/IOBlockStorageServices/IOBlockStorageDriver/hp USB Flash Drive Media/IOGUIDPartitionScheme/OS X MOUTNAIN LION INSTALL@2
BSD root: disk4s2, major 1, minor 15
imageboot_setup_new: root image url is file:///BaseSystem.dmg
IOHDIXController: NOTE: administrator is creating non-ejectable disk image
KDIFileBackingStore::_handleStart: initial R/W vn_open returned 30
imageboot_mount_image: root device 0x1000011
HFS: Low Disk: Vol: Mac OS X Base System freeblks: 30158, warninglimit: 30790
Kernel is LP64
ioqueue_depth = 64, ioscale = 2
Previous Shutdown Cause: 0
[BroadcomBluetoothHCIControllerUSBTransport][start] -- completed
DSMOS has arrived
[IOBluetoothHCIController][staticBluetoothHCIControllerTransportShowsUp] -- Received Bluetooth Controller register service notification
[IOBluetoothHCIController][start] -- completed
BCM5701Enet: Ethernet address c8:2a:14:59:28:c5
AirPort_Brcm4331: Ethernet address 28:cf:da:01:31:fd
IO80211Controller::dataLinkLayerAttachComplete(): adding AppleEFINVRAM notification
IO80211Interface::efiNVRAMPublished():
[IOBluetoothHCIController::setConfigState] calling registerService
AirPort: Link Down on en1. Reason 8 (Disassociated because station leaving).
en1::IO80211Interface::postMessage bssid changed
en1: 802.11d country code set to 'US'.
en1: Supported channels 1 2 3 4 5 6 7 8 9 10 11 36 40 44 48 52 56 60 64 100 104 108 112 116 120 124 128 132 136 140 149 153 157 161 165
MacAuthEvent en1 Auth result for: 00:23:6c:bf:ae:20 MAC AUTH succeeded
wlEvent: en1 en1 Link UP virtIf = 0
AirPort: Link Up on en1
en1: BSSID changed to 00:23:6c:bf:ae:20
en1::IO80211Interface::postMessage bssid changed
AirPort: RSN handshake complete on en1
[ffffff8018e64c00][BNBTrackpadDevice::init][75.15] init is complete
[ffffff8018e64c00][BNBTrackpadDevice::handleStart][75.15] returning 1
[ffffff8019e85800][AppleMultitouchHIDEventDriver::start] entered
[ffffff8018da6c00][AppleMultitouchDevice::start] entered
MacAuthEvent en1 Auth result for: 00:23:6c:bf:ae:20 MAC AUTH succeeded
MacAuthEvent en1 Auth result for: 00:23:6c:bf:ae:20 Unsolicited Auth
wlEvent: en1 en1 Link UP virtIf = 0
AirPort: RSN handshake complete on en1
wl0: Roamed or switched channel, reason #4, bssid 00:23:6c:bf:ae:20
en1: BSSID changed to 00:23:6c:bf:ae:20
en1::IO80211Interface::postMessage bssid changed
-bash-3.2#
I can only find one reference to a drive in the data, but maybe I'm missing something. Any help would be greatly appreciated!So far, so good! The article steps worked perfectly. I setup the Fusion Drive and then restored from my Time Machine Backup (from the SSD). I then moved the files over that were on the HDD (which I also backed up on my external drive. Everything seems to be working great! The volume was previously named 80 SSD OS X (to differentiate from the HDD) and it is still named that, although, as you can see from the screenshot, it now has a 576GB capacity (not 750GB, which is what I thought I put in there--my memory is horrendous! lol) ....not a big deal. I consider this a huge success at this point. Thanks again for the article!
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Fusion drive DIY not using SSD
Hello community,
Recently I have bought a SSD drive for my Mac Mini 2012, in order to make a dual hard drive installation ready to build a DIY Fusion Drive with Disk Utility. Apparently it works well, I have installed Yosemite without any problems and been using the Mac Mini normally. The problem is that it's very slow performance when it needs to read/write from disk, I've got around 40mb/s read and 35mb/s write speeds on BlackMagic disk speed tests.
In addition, checking the installation of the drives running "diskutil list" from command line (which tells me that disk0 is the SSD and disk1 is the HDD), and the disk usage with "iostat disk0 disk1 1" I can see that the OS is not really using disk0 but disk1 for all disk operations.
I noticed that eventually disk0 has movement but 99% activity is in disk1 (HDD). I believe that the normal behavior of a Fusion Drive is using SSD mainly and HDD in second instance for "not-cached" or less used files, but I am experiencing the opposite behavior.
The model of the SSD is Kingston HyperX 3K 240GB.
Please give me any advice about this issue.
Thanks for your help.
Best regards.Thanks for your replies.
Actually the SSD it's installed in the upper bay, because I've tried to install it at the bottom but Fusion Drive seems not to work, failing disk verification and prompting me to repair disk. In the upper bay seems to work fine, but I've this this issue.
This is my "diskutil cs list" output:
Mac-mini-de-Arturo:~ Bayo$ diskutil cs list
CoreStorage logical volume groups (1 found)
|
+-- Logical Volume Group FB3EEBCC-EBDA-4F7A-9256-0AE4A854C512
=========================================================
Name: Internal Drive
Status: Online
Size: 1239058448384 B (1.2 TB)
Free Space: 0 B (0 B)
|
+-< Physical Volume 3D0A6EE0-51FE-425C-B716-89215472D2D9
| ----------------------------------------------------
| Index: 0
| Disk: disk1s2
| Status: Online
| Size: 239713435648 B (239.7 GB)
|
+-< Physical Volume 397E16F1-877B-412B-8D7D-59A5BD47661A
| ----------------------------------------------------
| Index: 1
| Disk: disk0s2
| Status: Online
| Size: 999345012736 B (999.3 GB)
|
+-> Logical Volume Family 8FEAC5E2-11F2-4FE7-B980-945A0B81463C
Encryption Status: Unlocked
Encryption Type: None
Conversion Status: NoConversion
Conversion Direction: -none-
Has Encrypted Extents: No
Fully Secure: No
Passphrase Required: No
|
+-> Logical Volume 1621B9C3-17F9-4ABC-B8FF-767FEF074A94
Disk: disk2
Status: Online
Size (Total): 1230265384960 B (1.2 TB)
Conversion Progress: -none-
Revertible: No
LV Name: Macintosh HD
Volume Name: Macintosh HD
Content Hint: Apple_HFS
and, for more info, a screenshot of my current speed test with BlackMagic:
Many thanks! -
Hi,
The Fusion Drive have 128GB SSD and 1TB HDD. How much RPM have the 1TB HDD?
Thanks in advance!Welcome to the Apple Support Communities
Fusion Drive is only compatible with the Late 2012 iMac. The hard disk is 5400 rpm instead of 7200 rpm of the older Macs -
Mac Mini Fusion Drive or self built SSD / Fusion drive
Hi,
I am contemplating to buy a Mac Mini i7 2.6GHz but don't really know what I want to do with the Harddrive. One option would of course be to add a Fusion Drive for 200 bucks. However, apple doesn't say anything about the brand or model that they use for the SSD's which is a bit upsetting. Another option would be to go with the basic 1TB hard drive and replace it with a really good SSD (also around 200), or the third option would be to perhaps create your own Fusion Drive by going with the basic 1TB hard drive and simply add a SSD.
Any suggestions, recommendations, potential problems of eacht etc?
Thanks very much in advanceI have used a Fusion drive (120GB Intel SSD + 500GB HDD) which worked really well, handled all the file movement between the SSD and HDD and made a Mini fast. I added the SSD myself using a dual drive kit (with tools) from iFixit.com.
I would go with the idea of purchasing a 3rd party SSD (Samsung, Crucial, OWC), a dual drive kit from either iFixit.com or OWC (Macsales.com) then install it yourself. Both iFixit.com and Macsales.com have excellent guides on how to do this. With OS X Mavericks you'll be able to have the OS create a Fusion drive or you can manage the drives independently. -
Which is the better upgrade: RAM or a fusion drive?
I am on the verge of ordering one of the new iMac models but I find myself in right ole quandary regarding the Fusion Drive. On the one hand it looks like interesting technology and I'm sufficiently geekly to be motivated by that. On the other hand, I am very reluctant to spend £350 for a speed bump of a second or two here and there. (Yes, it is £350: £200 for the drive, plus £150 extra for the upper end 21.5"). A RAM upgrade seemed a much more sensible option, espeically since this cannot be upgraded later (boo hiss to that!). But then I started thinking: all-flash systems like the MacBook Air have no distinct RAM as such: it's 128 or 256Gb of flash and that's it. So what function does RAM have on a fusion drive system?? Would I not get the same benefits from a fusion drive as I would from a RAM upgrade??
Informed input much appreciated: I am very confused!Cameron Paterson wrote:
I see what you mean Martin. They do seem distinct but there is some overlap, isn't there? There is no RAM in a MacBook Air is there? Just a quantity of flash memory....
<omitted>
Most computers today do not have RAM which is just Random Access Memory, they have Dynamic Random Access Memory or DRAM, but the 'idea' is the same. DRAM is memory used by the OS and applications for storing objects they are working on in the computers 'memory'.
SSD or flash is flash memory configured to handle 'hard drive' functions. Compared to hardware disk drives with their inertia latency issues SSD is lightning quick. The hard drive function is usually referred to as 'storage' and not as 'memory'.
For example, my mid-2011 MacBook Air has 256GB of SSD which is flash memory used as the main disk drive. It is very fast. It also has 8GB of DRAM, which is enough for most applications to have room to run without paging to the SSD. Since paging to SSD is very quick apps that have to page to the SSD run very quickly too.
A fusion drive is one that has a SSD drive 'married' to a hardware drive via software. Apple's implementation has a 128GB SSD and a 1TB or 3TB hard drive. The software is designed to keep the most often accessed items stored on the SSD. So while it is really two drives, a fusion drive for all practical purposes appears as a single drive. One would have to get to the system level to see it as two drives and Apple has made that very difficult. Accessing the drives separately is a quick and sure way to hose your system. -
Should I partition my drive? (Is this common practice?)
Hello,
I recently purchased an iMac and I'm really liking it so far. I got used to it pretty quickly and can now do everything I could do before on my PC (which is now for sale).
I'm wondering if most Mac users partition their drives - one partition holds the operating system and applications, the other holds music, photos, videos, documents etc.
I used to do this on my PC to make sure the media files and documents don't get erased when I reinstall Windows. I asked this question on a Turkish Mac forum and the response was that most Mac users don't feel the need to partition their drives since the OS rarely needs reinstalling and in case it does, the partition doesn't have to be formatted anyway.
I would appreciate your replies on whether I should consider partitioning my drive to separate system and media files. I have never reinstalled MacOS and I'm not sure if I will need to format the drive and install afterwards if I need to reinstall one day. Also, AFAIK I won't be able to use Boot Camp if I partition the drive.
Thanks in advance!Hello,
Thank you for the replies!
den.thed, thanks for the welcome. I see that as long as there is space in the partition there is no tangible benefit to partition the drive.
My real worry was what would happen if I needed to reinstall MacOS or format the drive, as my photos etc. would be gone too, but I think this is what Time Machine is for (it's on and all my files are backed up.). And I don't think I need to "format" the drive for reinstalling MacOS, am I correct? Or is it "recommended but not necessary" to format/erase the partition before installing MacOS?
Also, thanks for the information about the "boot camp section" of the forums, if I come across any problems I will certainly visit there.
Glorfindeal: Thank you for the information. I have not decided for certain about installing Boot Camp - I have a licenced copy of Windows 7 which is currently running on VirtualBox inside MacOS - but I wanted to know my options clearly.
So, I think it's not common for Mac users to partition their internal drives. I think I will not bother with partitioning either. I hope I will get some more replies to be certain in my impression... -
HT3476 Fusion drive versus ssd drive issues
HHow can I compare the fusion drive to the ssd drive in the MAC mini
Lanny wrote:
A fusion drive will be a little faster than a HDD and a SSD will be a lot faster than both, especially if it's connected via PCExpress 2.
I agree with the second half of your statement but my experience with the fusion drive VS a standard 5400 RPM HHD is that it is significantly faster, not a little. Apple has managed to find a good balance between permanently storing often used items on the SSD and using it for buffering.
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Enhacement of FILTER LINE SALV_WD_TABLE
Dear all, I'd like to enhance the filter line for the alv grid SALV_WD_TABLE I'd like some cell to be dropdown boxes instead of input fields... Any idea how to reach this ? Stephan