Cannot install Windows 8.1 with BootCamp on Mavericks

I have a brand spankin' new Late 2013 27" iMac, fully updated, with a 3TB Fusion drive. I have thrice attempted to install Windows 8.1 via BootCamp 5.5, with the 64bit edition DVD on the SuperDrive, and allotting 1TB out of the 3 available. There are no other partitions besides OS X and the BootCamp partition. The Windows installer successfully begins, but each time it cannot locate any partitions to load itself on. The list is just...blank.
I've already scoured the forums here for support, and tried several claimed remedies, such leaving all USB ports clear (except for the SuperDrive) until after install (even removing the flash drive with the Apple support files), and had a long chat with Apple Care today...they said the engineers would get back to me in about a week. I read somewhere that hard drives over 2.2TB may be an issue, but Apple states that Mavericks has no problem with this, leading me to believe maybe Windows 8.1 is still lagging in this department.
To that end, I recall someone, somewhere mentioning how to carefully partition the drive to get around this, and that Windows absolutely, positively, had to be on the 4th partition, including the hidden partitions such as Recovery, Boot OS X, etc. Only problem is that Disk Utility is showing way more hidden partitions than this, and they seem to be unremovable.
Does anybody have a solution/workaround for this, or are both products still too new to have a found a way to play nicely together?

I did it. After fours hours and two hours on the phone with Apple support, I installed Windows 8.1 to my iMac. So, I just wanted to share it with you.
System:
iMac 2013, 27" monitor, 1T fusion drive, wirless keyboard, magic mouse.
Software:
OS X 10.9
Windows 8.1 full version 64bit
(I skipped some steps such as type in software key, choose language, etc.)
1. For my last try, Instead of using Bootcamp assistant to setup partition for Windows, I used disk utility to create an 100G space for Windows with FAT file system and named it BOOTCAMP.
2. Insert Windows CD into the USB super drive.
3. Shutdown iMac.
4. While press and hold the left "option" key, turn on iMac.
5. Select CD/Windows icon to boot.
6. Choose Custom installation
7. Select the partition named BOOTCAMP (I am not sure why it is 200G; I assigned 100G. Well...)
8. Format
And the rest is history. By the way, when Windows restarts during installation, make sure to press and hold the left "option" key to boot up Windows.
I do not know why but I am happy now. As a matter of fact, I am sending this message from Windows 8.1 running on my iMac.
Good luck to you.

Similar Messages

Can I install Windows XP SP1 with Bootcamp on my new Mac Mini 2011 i7 ?

Can I install Windows XP SP1 with Bootcamp on my new Mac Mini 2011 i7 ?

Baiscally if your Mini came with Lion Pre-installed new then No you can't use XP.
The Lion installed computers no longer support XP OR Vista via Apple's Boot Camp.
For one thing Apple only supported XP with SP2 in order to install it on pre Lion computers.
If the Mini had come pre-installed new with say 10.6 then you could have installed XP and still of been able to upgrade to Lion without any issues as you already have the drivers for XP installed. Lion only has the drivers for W7.

I want to Install Windows 8 Pro with Bootcamp

I have Windows 8 running currently on Parellals 8. I cannot enter my product key for Windows yet but can use my flight simulater which works perfectly. I have tried to install Windows 8 using bootcamp (just to keep up to date) but keep getting the error
"Your Bootable USB drive could not be created An error occurred while formatting the disk"
This is using a 32 GB Adata S107 USB 3 stick and Windows 8 Pro on disk. The Windows 8 is a full version. All I do is drag the disk icon from my desktop to the ISO image space on Create Bootable USB Drive for Windows Installation page. Then I get the error.
How do I install Windows 8 full version onto my MBP Retina 2.6 GHz with Bootcamp?

I really dislike Win 8. It is made for desktops and tablets but is bad on the desktop.
During the public beta, MS gave users a way to bypass the Metro interface (MS themselves no longer call it Metro. Lord knows why). Just before the official release, they declared Metro was so great, everyone should be forced to use a tablet interface on a desktop computer and removed the simple option to bypass it. It didn't take long for others to develop and release ways to get around that. Here's three options. The first two cost a few bucks. The last is a freebie.
https://licensing.thinix.com/products/Product.aspx?ProductID=6472
http://www.startisback.com/#download-tab
http://forums.mydigitallife.info/threads/35189-Windows-7-explorer-for-Windows-8
As I don't have Win 8 myself, I have not tried any of these. On the last link the author of the freebie (next to the word Download) even notes the second option, StartIsBack, is better than his attempt.
Overall, I've read that Win 8 is better than Win 7 as far as performance. Faster and better security. It's the Metro interface many people can't stand.

Installing Windows 8.1 with bootcamp, partition issues.

So I am trying to install windows 8.1 onto my MBP running the latest 10.9.2 operating system. It took a while to get the HD to successfully partition, however when I finally got it working, upon booting from the USB drive I got this error message
windows cannot be installed to this disk. the selected disk has an mbr partition table windows can only be installed to GPT disks
Is there any way to change the partition table or to fix this?
I just tried restoring the partition to one, verifiying and repairing the disk in recovery mode, then re-running boot camp, issue persists.
running late 2011 15" MBP

Well, when you start the computer you should press ALT to show the boot manager. With Windows 8 and 8.1 (for Windows 7 there's not this problem) there should be three different icons: the OS X one, and then two called Wininstall (or something like that) and the other is similar but there should be written something like "EFI Boot".
Well, don't choose the EFI Boot one and you should be fine.
If you choose the first one the Windows installer format the Bootcamp partition correctly, and then you can start the procedure.

I cannot install windows 7 x64 with AMD/ASUS RAID driver

Trying to install Windows 7 Ultimate x64 on an ASUS M5A97 mobo with AMD SB850 RAID, two WD 750GB drives configured as RAID 0. No drives are recognized by W7 install, so I choose Load Drivers. I put the drivers on a USB stick. Install finds the drivers there,
starts loading them, then comes back with "Installing an unsigned 64 bit driver is not supported and may result in an unstable Windows installation." I downloaded the latest drivers from ASUS website which are WHQL certified (as are the one's on the motherboard
disk). I saw other posts that recommend clicking Repair instead of Install, but I don't see where that option is. All I am given as options are Upgrade or Install. Choosing Upgrade tells me to boot Windows first. But this is a brand new install so...
I tried pressing F8 as setup was booting and chose "Disable Signed Driver Requirement" but that had no effect at all. If I turn off the RAID W7 sees both disks and happily installs. I see related posts going back to 2009; surely someone has
a solution for this issue?
Da Bomb

Hi guys,
I have been struggling with the same issue.
Win7 x64. Gigabyte GA-X79-UD3 Mobo with Intel core i7-3930K at 3.20 GHz
Marvell 88SE9172 SATA RAID controller with two Hitachi 500 GB spinning disks configured as RAID1
Windows would get to the point of asking for a mass storage drive. It would not see the RAID I had created.
Tried every driver I could find. Tried drivers from the "Station Drivers" website. Tried Marvell drivers for the same chip from the ASUS website. No luck. Tried loading from CD as well as USB flash drive. Always the same result... Windows would find
the drivers appropriate for the hardware found, I would select the RAID version, and after a few seconds, would report that the drivers were unsigned, and the installation was not supported for 64-bit drivers. Clicking OK would take me back to the load drivers
display with no new drives listed in the available drives window.
I tried hitting F8 during startup, and selected the "allow install of unsigned drivers option". That didn't do ANYTHING. Still the same error.
Someone suggested putting the drivers in the root directory. That didn't work. I also disabled all other drives except one CD rom and a USB drive and made sure that my RAID array was the first drive in the boot list.
Tried doing a windows repair, as someone else suggested. (This is an option that is available on the install disk I am using. It's enabled as part of EMS (emergency management services) in setup. Anyway, this was reported to be a workaround
to the signed driver issue. It would allow me to browse to the individual files, but no matter which one I selected, the response was "cannot find hardware appropriate to the driver selected" or some such nonesense. So I gave up on that.
Doing the install with the controller in IDE mode with just one drive connected, would result is Windows installing without a hitch. The problem was clearly when I presented 64-bit windows with a controller in RAID mode.
Long story less long, here's what worked for me....
Out of desperation, I began trying other subfolders in the driver lists. The Gigabyte manual indicated that the AMD64 subfolder was the correct one for the Marvell controller, when using RAID mode with 64-bit Windows. After trying every subfolder of
every driver I could find, the driver in the i386 folder actually worked. It initially came back with the same error about unsigned drivers, but after clicking OK, my RAID drive showed up in the list. I have been able to partition and format
the drive from within Windows setup, and am continuing with the install now. Hopefully won't be any problems booting from the drive post install, but so far it looks good, and I'm relieved that I was able to get it this far.
The whole process has been one of the most frustrating computing experiences I've ever had. This is what it was like back in the 90's when building PCs from scratch. I'm amazed that in this day and age the process is still so poorly documented
and filled with potholes, traps and caveats. Shame on the entire PC industry for allowing this to continue. I'm not asking that they jump in and try to automate it and do all the thinking for me (their solution for everything lately)...all I'm asking for it
clear, concise and accurate INFORMATION.
With the right information, and software that provides accurate feedback, this would all be easy...and even fun.
Hope this helps someone faced with the same problem.

Cannot install Windows 8.1 via bootcamp. (Solved)

I have tried installing via bootcamp and I got an error, I didn't take a picture but it said something about not setting the right boot up?
I also tried the method of removing the partion and creating a new partion called BOOTCAMP in exFat. I cannot boot it using the BIOS Method because it says I have no bootable drives. When I select the EFI partion I get the windows installation but I got an error stating that I have an MBR table and that windows doesn't suport it.
What's the best way to install windows 8.1?
I have a macbook pro retina (Late 2013).
Edit: I am installing again using the normal bootcamp method. (No intteruptions)
Edit:2 I sucuessfully passed the installation now it just restarted.
Edit:3 I sucuessfully installed Windows 8.1! In the installation meantioned in edit 1 I used an old .iso that I had from december 2013, I had problems when I created an .iso from windows 7. If you have problems try chaning your .iso.

Some people have been successful installing 8.1 (me, for instance) despite it not being supported. However this seems to be hardware dependent.
I would have expected the normal WININSTALL option to be available on a Bootcamp-created USB, not just the EFI boot option.
It really depends on whether Bootcamp is creating a hybrid MBR when it creates the Bootcamp partition. Some later model Macs do not. On the Macs that do not create the hybrid MBR Windows may install in EFI mode.
If you remove everything and stretch the Macintosh HD back to the full size of the disc again then reboot and when the system restarts begin the Bootcamp installation again but do not let it restart at that time, you can then run the following code in the terminal and report its output we will be able to see if a hybrid MBR has been created (this is after the partition has been created by Bootcamp, but before it reboots).
sudo fdisk /dev/disk0

Installed Windows 8.1 with Bootcamp but cant use my monitor through VGA-MiniDisplayPort

I used Bootcamp to install Windows 8.1, but when I tried to use my monitor, that worked on the Windows 8.1 preview, no longer works. It's a VGA-MiniDisplayPort. I'm not willing to spend extra money until I need to.

Solved: I figured out the issue was I was using UEFI for the Windows 8.1. Now all I'm doing is attempting to install it normally and so far the monitor issue is fixed.

Can't install Windows 7 Ultimate with Bootcamp (Lion)

Hello,
Any help with this would be much appreciated. I have a freshly installed copy of Lion installed on my Mid-2007 iMac. Everything's updated, I prepare my Bootcamp installation and, hiccup, it doesn't detect my Windows 7 Ultimate DVD because it's on an external optical drive. The internal one's busted and disconnected. I tried rEfit, to no avail since it doesn't seem to work with Lion. Does anyone know if a bootable USB drive would work? I could create one, but not with the Bootcamp utility since it's greyed out and not available for my system.
Ultimately, I'm just trying to get a copy of Windows running to work with some old proprietary software. XP or 7 would do. If someone thinks a fresh install of Snow Leopard and an install of XP with an external optical drive would work, I'd definitely do it.
Thanks for your help

What year/model is this Mac? If you select the first and second option, can you create the USB with a Windows ISO and BC drivers?
Unless you have a valid BC partition on your disk, the last option will not work.
Please post the output from Terminal of the following commands.
diskutil list
diskutil cs list
sudo fdisk /dev/disk0

When I try to install Windows on iMac with Bootcamp I get this message,"Can't install the software because it is not currently available from the Software Update server."

I try to get Windows 7 on my iMac 21.5-inch but on the Bootcamp Assistant I get this message,"Can't install the software because it is not currently available from the Software Update server." Please help me and thank you.

I have that problem too. There's many other discussion threads as well. Either Apple doesn't realize they have a problem, or they do and simply don't care. Either way, not good.
There is a workaround that I'm going to try next. Go to this webpage:
http://support.apple.com/kb/HT5634
Scroll down to the middle of the webpage. Hit "Expand All". Now, search the webpage for the Apple product name of your computer. It should be something like "MacBook Pro, 17-inch, Early 2008". If you're unsure what you have, open "About This Mac" (upper left corner of your screen, Apple menu), and hit "More Info".
Now that you've found your computer, read across the table, to the version of Windows that you want to install (32-bit or 64-bit). Hopefully you'll find a "4" or "5" there. Click on that number, to go to the download page for the drivers that you need. If you just see an empty box there, then you're out of luck....
Hopefully there will be drivers. Download those, unzip, and then copy to a USB stick that has been formatted for MS-DOS FAT (or FAT32). Use Disk Utility to format your USB stick if necessary. Now, you have the drivers you should have gotten from the Boot Camp Assistant download. You should then be able to go back to Boot Camp Assistant and follow the instructions from there.
Hope it works!
Josh

Cannot install windows 7 on brand new mac mini with 256 g sdd? Please help.

Cannot install windows 7 on brand new mac mini with 256 g sdd? Please help.
Have tried all tricks found on the net and followed every advice from apple support.
Still black screen with blinking curser when mini is rebooting following partitioning via bootcamp.
Very nice and fast mashine, wouldnt like to return it.
thanks allan

Is that an Apple SSD?
what model is it?
Is there a firmware update if non Apple?
Lion is not server version.
Windows is ? ISO or retail?
Google macmini Windows 7 SSD Apple Boot Camp

Cannot install windows on bootcamp

I have leopard os with bootcamp and a new windows xp sp2 disk. i cannot install windows on bootcamp. it says that i am missing a component. any tips?

*"any tips?"*
Post your question in the Boot Camp forum:
http://discussions.apple.com/category.jspa?categoryID=237

Cannot install windows, starting to get really pissed off with this PLEASE HELP

ok, i'm starting to get agitated with this.
i cannot install windows XP, 2003, OR Longhorn on my machine.
right now, i have the following setup:
msi 865pe neo2 motherboard
intel p4 3.2ghz w/HT (factory HS/Fan currently)
1 dimm of PC3200 crucial DDR400
30GB maxtor HD plugged into primary IDE
pioneer dvd/cd drive as sencondary IDE
alps 3.5" floppy drive
antec true blue 480wt PSU
i do the following:
format with maxtor cd
boot from OS cd
start setup, reboot, continue
the farthest i can get is 'registering components/completing installation' i either get a blue screen stop error which isnt the same everytime, or it just locks up and doesnt do anything.
ran the memtest checker and get errors on test #4
i had a DIMM of kingston that gave the same errors, so i RMA'd it and got another. same errors, so i RMA'd again and got a Crucial stick. same errors.
so i RMA'd the motherboard since i figured it had to be that. and it improved from the problems i had earlier. (the problems i had before were worse before.)
below are my BIOS settings. SOMEONE WHO KNOWS PLEASE HELP ME!
advanced bios features:
quick boot - enabled
boot order - floppy, cd, HDD
full logo - disabled
s.m.a.r.t - enabled
num-lock on boot - enabled
floppy swap - disabled
floppy seek - enabled
save rom to HD - no
boot to os/2 - no
hyper threading - disabled
mps revision - 1.4
apic acpi sci irq - disabled
cpu l1 & l2 cache - enabled
bios cacheable - disabled
c000, 32k shadow - disabled
advanced chipset:
dram timing...
configure by spd - enabled
(i dont know what to set timing to, nothing anyone has since said helps)
integrated perfs:
usb controller - enabled (same errors if its disabled too so its not USB)
usb device legacy support - disabled
on chip IDE:
operate mode - legacy mode
ata config - pata only
sata keep enabled - yes (for sata drive i have, error either way)
pata channel selection - both
onboard ethernet, 1394, prmoise ide and audio all DISABLED
pc healt status:
cpu - 49°C/120°F (idle sitting in bios)
system temp - 28°C/82ºF
cpu fan - 2678rpm
nb fan speed - 6490rpm
vcore - 1.456 up to 1.502
3.3v - 3.232v
+5.0v - 5.003v
+12v - 11.680v
-12v - -11.743v
-5.0v - -4.826v
battery - 2.896v
+5V SB - 4.945
freq/voltage control
Dynamic OC - disabled
cpu ratio locked
dram freq - auto
spread spectrum - enabled
cpu bus clock - 200
ddr clock (grayed out) - 400
adjust agp/pci - 66.66/33.33
cpu vcore adjust - no
cpu vcore (grayed out) - 1.5500v
ddr power voltage - 2.65v
agp power voltage - 1.50v
SOMEONE PLEASE HELP ME!!!!!
i'm running out of time, money, patience.
if it cant be solved i'm going to set myself on fire!

Quote
Originally posted by REILLY875
Do NOT try the 250 Watt PSU!!, As "Wonk" said if you happen to Blow it, the PSU will most likely Take out the Mo-Bo with it! And maybe the CPU to, due to the Voltage Spike you would get ...I would not put to much Credence into the fact that as of now the +12V and the +3.3V Rails are reading a little low,(I say this because it is indeed a ANTEC), as this could be the Monitoring Hardware, or the Software that might be reading wrong....If I where you I would First set the Memory Timings Manually to 3-4-4-7-8, And up the DRAM (VDIMM) Voltage to 2.7 Volts, and if it still wont Load, I would Definitly try a different DIMM Slot, and Rince and Repeat .....If you dont mind me asking , Why are you running with just 1 Module?....Is it on purpose or are you saving up for More?................Sean REILLY875
yea, i dont plan to run the 250. im gonna wait for the new 480.
thanks for the info about ram timings as well. i havnt gotten any solid answers about what to set it to.
even with new mobo and ram, i'm getting errors in memtest86 #4 test as i always have. i've tried different slots with same problems.
i only have one module because i dont want to waste anymore money on a non-working system. once i get it up and running i'll add another 512.

Cannot install windows 8 on Pavilion Elite M9600T (KX745AV-ABA) with Vista 64 BIT

I cannot install windows 8 on my computer. I contacted Microsoft and he worked on it for three hours and said I had a graphics card driver problem.I am using a Nvidia GeForce 9800GT which came with the computer. When I try to update to the latest driver (306.97) Which is on the Microsoft update site and also on the Nvidia site The screen says no signal and goes to sleep. I have been working with a Nvidia rep for a week now and he says it is not their driver that is causing the problem and that I should contact HP. I don't know what else to do. I removed the working Nvidia driver (SP41066) also and Tried to install windows 8 and recieved the same message "Windows installation was not successful" and returned me to Vista 64 Bit. I don't know what else to do. Can someone please help or am I just out of luck. Thank you,
Gene
This question was solved.
View Solution.

You're welcome mrchips108
By the way up for one more go. I was finally able to find someone with a possible solution for you. the user yashoshah on the tomshardware forums had the problem:
"Windows installation was not successful. Your previous version of windows will be restored. Please do not switch off your computer during this time"
SOURCE: Windows installation not successful
He fixed it by removing the HDMI cable and connecting to the monitor through DVI. After it was installed he went back to using HDMI.
How is your video card connected to the monitor: what cable and what interface is on the monitor and what interface are you using on the video card? Perhaps the Microsoft rep you spoke to was partly correct about the video card being the problem. It might be that the driver built into Windows 8 has a problem with certain configurations.
Don't forgot to say thanks by giving "Kudos" to those that help solve your problems.
When a solution is found please mark the post that solves your issue.

Cannot Install Windows 7 with AHCI mode

Hello,
Having just submitted a support ticket to MSI, I was curious to see if anyone else has experienced a similar issue or may be able to suggest a possible resolution.
I recently purchased a MSI Z87-G41 PC Mate for an htpc build.
I've ran into an issue of not being able to install Windows 7 Ultimate 64 bit onto my ANY SATA 3 hard drive with SATA mode - AHCI enabled in bios.
Main parts for the build are:
Motherboard: MSI Z87-G41 PC Mate
CPU: Intel Core i3-4130 3.4 3 FCLGA 1150
RAM: G.SKILL Ares Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600
PSU: Corsair Builder Series CX 600
OS HD: Crucial M500 SSD
During Windows install and selecting the SSD in which to install windows onto..
Windows will prompt with: “Windows cannot be installed to Disk x Partition x. (Show details)
Afterwards, I’ll select ‘Load driver’ and select the “Intel Rapid Storage Technology Driver for 8x series,” provided by MSI drivers download page. Confirmed as a valid driver for the SATA AHCI controller.
"Select the driver to be installed" lists: “Intel(r) 8 Series/C220 Chipset Family SATA AHCI Controller” Looks good, then progress...
Followed by clicking on next- “Setup was unable to create a new system partition or locate an existing system partition. See the setup log files for more information.”
I've tried installing Windows 7 Ultimate 64 bit via USB drive and OEM disc to no avail.
Performed a test using the same install procedure with my primary desktop computer which uses a MSI z68A-GD65 (G3) motherboard (AHCI enabled.) I was able to install windows to my Crucial M500 SSD without issue.
Confirmed the issue occurs while testing with different hard drives. I have yet to be able to install windows with AHCI enabled on this motherboard.
HDDs tested include:
WD Black WD5002AALX 500GB
Seagate ST3100524AS 1TB
Once I change SATA mode from AHCI to IDE, I was able to install windows without the need of pre-loading the Intel 8 Series SATA/AHCI driver.
Afterwards having installed windows, I decided to test by switching SATA mode back to AHCI. Doing so will cause the machine to bsod upon booting to windows. Later, I performed the registry edit to change IDE to AHCI mode within windows. Followed by again enabling AHCI in bios.
I was able to boot while in AHCI mode temporarily a couple of times until this method stopped working. Any attempt past the bios post, windows will not boot.
I've also tested the manual and XMP profile RAM settings as suggested by the sticky'd thread here https://forum-en.msi.com/index.php?topic=178019.0
I would like to possibly resolve the issue in regards to utilizing AHCI mode for optimal performance for my hard drives and hot swap capability.
When I have more time, I suppose I can run a RAM test; but so far I simply believe it may just be a SATA controller or driver conflict with the motherboard.
tl;dr Cannot install Windows 7 onto any hard drive with AHCI enabled. Works fine with IDE mode.

** Update as of 6/3/2014 ** Issue resolved.
Received my replacement motherboard from RMA. Replacement is working without any issues with SATA mode set to AHCI.
Tested by running Windows 7 and Windows 8 install - both detected my SATA SSD and other HDDs as applicable drives to install Windows onto. Pre-loading the SATA controller drivers was not necessary. Windows boots up immediately without any delay now. Benchmarks are showing valid stats for SATA3 devices.
Also to note, the replacement motherboard came with bios version 1.5, compared the one I sent back which came with 1.6. In case if that had anything to do with it. Not going to risk updating the bios at this point.
Video of issue:
Benchmarks from the old motherboard on the Crucial M500 SSD taken with Crystal DiskMark
Benchmark from MSI Z87-G41 PC Mate (MS-750)
on SATA 3 port set to AHCI
CrystalDiskMark 3.0.3 x64 (C) 2007-2013 hiyohiyo
Crystal Dew World
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]
Sequential Read : 264.792 MB/s
Sequential Write : 143.991 MB/s
Random Read 512KB : 250.614 MB/s
Random Write 512KB : 142.545 MB/s
Random Read 4KB (QD=1) : 24.176 MB/s [ 5902.3 IOPS]
Random Write 4KB (QD=1) : 82.152 MB/s [ 20056.5 IOPS]
Random Read 4KB (QD=32) : 210.018 MB/s [ 51274.0 IOPS]
Random Write 4KB (QD=32) : 134.663 MB/s [ 32876.6 IOPS]
Test : 100 MB [C: 35.4% (39.6/111.8 GB)] (x5)
Date : 2014/05/24 3:25:19
OS : Windows 7 Ultimate SP1 [6.1 Build 7601] (x64)
Benchmark from MSI Z87-G41 PC Mate (MS-750)
on SATA 3 port set to IDE
CrystalDiskMark 3.0.3 x64 (C) 2007-2013 hiyohiyo
Crystal Dew World
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]
Sequential Read : 181.472 MB/s
Sequential Write : 141.275 MB/s
Random Read 512KB : 177.430 MB/s
Random Write 512KB : 141.393 MB/s
Random Read 4KB (QD=1) : 21.646 MB/s [ 5284.6 IOPS]
Random Write 4KB (QD=1) : 68.922 MB/s [ 16826.7 IOPS]
Random Read 4KB (QD=32) : 25.411 MB/s [ 6203.9 IOPS]
Random Write 4KB (QD=32) : 108.275 MB/s [ 26434.3 IOPS]
Test : 100 MB [C: 35.4% (39.6/111.8 GB)] (x5)
Date : 2014/05/24 3:41:42
OS : Windows 7 Ultimate SP1 [6.1 Build 7601] (x64)
Benchmark from MSI Z87-G41 PC Mate (MS-750) **Replacement from RMA**
on SATA 3 port set to AHCI
CrystalDiskMark 3.0.3 x64 (C) 2007-2013 hiyohiyo
Crystal Dew World
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]
Sequential Read : 469.045 MB/s
Sequential Write : 138.655 MB/s
Random Read 512KB : 419.083 MB/s
Random Write 512KB : 135.032 MB/s
Random Read 4KB (QD=1) : 26.454 MB/s [ 6458.5 IOPS]
Random Write 4KB (QD=1) : 89.189 MB/s [ 21774.7 IOPS]
Random Read 4KB (QD=32) : 252.818 MB/s [ 61723.0 IOPS]
Random Write 4KB (QD=32) : 129.909 MB/s [ 31716.1 IOPS]
Test : 100 MB [C: 37.1% (41.5/111.8 GB)] (x5)
Date : 2013/03/10 10:02:50
OS : Windows 7 Ultimate SP1 [6.1 Build 7601] (x64)

Installing Windows XP Pro on Bootcamp

I'm new to the imac and this is the first time that I have used one. I'm trying to install Windows XP Pro with service pack 3. I also have a version of Windows XP Pro with service pack 2.
In total I have three Windows XP Pro disks which I have tried installing on Bootcamp but without success. All three versions are full versions and not upgrades. One version is an OEM with service pack 2 and the other two versions are volume licenses with service pack 3.
I've performed all the software upgrades before doing the installation as advised. My hard drive is 640GB and I am allocating 100GB to the Windows partition, so I'm going to choose NTFS as the format of the partition.
When I try the installation with the OEM disk I don't get the agreement screen or the screen where you choose the format of the partition i.e FAT 32 or NTFS. During the installation I can get as far as the files being copied to the windows folder, then I get an error message saying that a file cannot be copied, it's not the same file each time. If I'm lucky and it does copy all the files at this point it then reboots itself and I then have a plain black screen saying that an error has occured and the whole thing just freezes.
When I try the installation using either of the volume license disks I get all the screens as shown in the instruction guide but I only get as far as the files being copied to the windows folder, but it never gets to the 100% completion stage and I have to press F3 to exit the installation, then when it reboots it just freezes. Each time when it's copying the files you can hear the DVD drive start to slow down and finally grind to a halt.
This is as far as I ever get with the installation. Can anyone help me with this problem?

I don't have a definite solution. I had much the same problem early on.
The nearest I could get to the problem was that the Superdrive may have been slightly off calibration.
Then I thought if it's a calibration problem, and it seems a bit different each time I try to install from the Windows DVD, then there is another problem possibly related to the Superdrive.
It was all trial and error and took many hours to resolve but I did overcome it.
The Superdrive was over heating. Your iMac is constructed way differently to my troubled Mac Pro but the same scenario could still be possible. So I suggest that ways be found to cool the iMac, maybe with an external fan blowing on it or installing SMC Fan Control, or both.
Oops, SMC Fan Control runs under the MacOS so it will be useless when Windows is booted and installing from the DVD. External cooling is your best bet if overheating is the problem.
Good luck Linda.

Cannot install Windows 8.1 with BootCamp on Mavericks

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