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Windshadow99 Author

Level 1

34 points

More boot camp problems new 5k imac 3 tera fusion drive

there seems to be problems with Yosemite and boot camp assistant

i'm cross posting this to the iMac forum but I spent hours online with apple tech today and none of the several foks I talked to there had even seen a 5k 27" yet and my call back from Cupertino and engineering is no till tomorrow so I thought I should post here too

MMy bto 5k shipped from China sunday night and arrived in Maine this morning.... Amazing when you think about it for a bto

iinstallation and set up we're going fine and I started up boot camp assistant to create a temp boot camp while I wait for my thunder bay 4 box to take the drives for my old Mac pro when boot camp will have a1 tera SSD all to itself....

so carved off a 700 gig boot camp partition which the assistant formatted fat I then plugged is the lighting to FW adapter in a LaCie 2 tera fw 800 drive to act as a bridge to my LaCie DVD burner which uses the old fw400 cables and inserted my new shrink wrap win 8.1 retail 64 DVD and up comes the win 8 install in very tiny type in a tiny window which got a bit of a laugh out of me.

And I go through it to the point of selecting that boot camp partition and then said it could not use a fat partition and I should reformat it from the win 8.1 installer which I did and then it said it could not use and unknown partition so I said great and booted back to 10-10 and the boot camp tool to put things back and it said it could not I then went to disk tools and it also said the 3tera fusion could not be either reformatted or put back to a single partition I was on with tech support where I went up through 4 levels of support due to the 5k bto which most had no knowledge of. We tried the optioncommand r to get to DT and the same problem as did going to reinstall from the net which after a 30 min down load could not reformat either it is now kicked to Cupertino with a call back tomorrow

( At this point all I want to do is put the computer back in the condition it was in when i started with a plain Yosemite on an unpartitioned 3 tera fusion... Then deal with boot camp when it can have its own drive)

am betting it will take a Unix comand line to reformat but be aware there may be boot camp issues with my configuration

and any help here will be great fully received

iMac, OS X Yosemite (10.10)

Posted on Oct 21, 2014 4:04 PM

Top-ranking reply

Loner T

Level 9

59,513 points

Posted on Oct 21, 2014 6:04 PM

There is a much easier and cleaner method on the new iMac 5K, because it is a full UEFI machine and Windows 8.1 is UEFI compliant. The traditional bootcamp Hybrid MBR is a travesty on such a beautiful machine.

Please see this thread - Re: Problem installing Windows (7, 8.0, 8.1) on BOOTCAMP - Mavericks.

Initializing the internal disk may not be necessary at all but Command+Opt+R and DU is needed, if you really need to initialize the internal Fusion HD.

This thread can help you initialize the internal drive - Re: Can't format former Boot Camp partition

View in context

138 replies

Loner T

Level 9

59,513 points

Oct 27, 2014 7:27 PM in response to Windshadow99

It is still showing the Offline and no logical volumes, which means you do not have OS X to boot from. 😟

Windshadow99 Author

Level 1

34 points

Oct 27, 2014 7:34 PM in response to Loner T

TThe only symptom is that booting into the Macintosh HD is taking longer. I to was surprised to see that offline there

ddisk tools shows the fusion disk in red and if you select it it wants to fix it which I have not done

ooh well bedtime catch you tomorrow

Loner T

Level 9

59,513 points

Oct 27, 2014 7:41 PM in response to Windshadow99

Add disk3s6 (2.4TB) to the CS volume using

diskutil coreStorage addDisk 153ED13B-3675-40D1-9469-2E1A3B4167EC disk3s6

Your OS X installation is actually here when you did the TM restore...

6: Apple_HFS Macintosh HD 2.4 TB disk3s6

Windshadow99 Author

Level 1

34 points

Oct 28, 2014 7:23 AM in response to Loner T

is that todays first step?

other than slow boot i am seeing problems in logging in to a game that was fine before the restore

what is the best way forward reinstall 10-10 from the internet recovery and then migration from yesterdays early time machine bu?

or just forge ahead from where we are?

Loner T

Level 9

59,513 points

Oct 28, 2014 10:21 AM in response to Windshadow99

I missed this on my phone. 😟.

The slow boot is because OSX ended up on the HDD after the restore. My suggestion is to add disk3s6 to core storage via diskutil cs addDisk to see if it will reconstitute the CS volume. If it does, it will save you a full restore. Then we can merge all the small chunks in the first 600GB and this time use BC instead of direct DVD method.

Windshadow99 Author

Level 1

34 points

Oct 29, 2014 4:42 PM in response to Loner T

WWell I am back home and ready to dig into this again in the morning if you are game and I can take a possibility malfunctioning 2006 vintage dvd burner out of the problem as I came home with a new SuperDrive usb

i assume I input that code from Internet recovery right?

once more thanks for all your help with this head scratcher

Loner T

Level 9

59,513 points

Oct 29, 2014 6:48 PM in response to Windshadow99

Yes, that should be a good starting point for the next chapter in this adventure.

fredz85

Level 1

11 points

Nov 4, 2014 5:56 AM in response to Windshadow99

I have a new iMac retina as well, but with an SSD (1 TB). I am now trying to install Windows 8.1 as EFI (not via Boot Camp). I created an empty partition using Disk Utility. However, when rebooting with the Option key, I all see is OS X and my USB key containting the installation files. I was of the understanding that there should also be a partition called EFI BOOT visible. This is not the case. How can I get it there? In Windows installation I can see the partition, but it won't let me continue with the error "Windows cannot be installed to the disk. The selected disk of the GPT partition style." What can I do?

EDIT: this article solved it for me, with Rufus formatting the USB stick

http://www.nextofwindows.com/how-to-make-uefi-bootable-usb-flash-drive-to-instal l-windows-8/

Loner T

Level 9

59,513 points

Nov 4, 2014 5:59 AM in response to fredz85

You may want to start a new thread. If BCA partitioned your disk it creates an MBR partition. You created one in DU which is GPT, but your Installer does not have EFI boot.

Did you create the USB+ISO via Bootcamp Assistant?

fredz85

Level 1

11 points

Nov 4, 2014 6:01 AM in response to Loner T

Already solved, see above. It was just the formatting of the USB stick...

Windshadow99 Author

Level 1

34 points

Nov 4, 2014 7:43 AM in response to Loner T

HHi T I just got my power and Internet restored Internet was down for over a week and power out for a few days due to weekend storm.

meeting with a salesman this afternoon about getting a generator but I will be back here asking for help with the old problem tomorrow

sorry about dropping the ball on this

cheers

Loner T

Level 9

59,513 points

Nov 4, 2014 7:44 AM in response to Windshadow99

No worries.

fredz85

Level 1

11 points

Nov 4, 2014 8:02 AM in response to Loner T

Can someone check if this is a correctly configured EFI dual boot system using GPT (1 TB SSD on iMac 5K)?

Why does it say "Microsoft Basic Data". It has a label of BOOTCAMP in OS X. Can I change this, or is this looking for trouble?

$ diskutil cs list

CoreStorage logical volume groups (1 found)

+-- Logical Volume Group ADFC154D-A064-46DD-860D-xxx

=========================================================

Name: Macintosh HD

Status: Online

Size: 500183453696 B (500.2 GB)

Free Space: 0 B (0 B)

+-< Physical Volume C0DDFC3F-9A75-4A00-B426-xxx

| ----------------------------------------------------

| Index: 0

| Disk: disk0s2

| Status: Online

| Size: 500183453696 B (500.2 GB)

+-> Logical Volume Family 6C0DFD3D-127E-43CA-A4CA-xxx

----------------------------------------------------------

Encryption Status: Unlocked

Encryption Type: None

Conversion Status: NoConversion

Conversion Direction: -none-

Has Encrypted Extents: No

Fully Secure: No

Passphrase Required: No

+-> Logical Volume 301C9D0B-5A66-42C5-ACEB-xxx

---------------------------------------------------

Disk: disk1

Status: Online

Size (Total): 499847909376 B (499.8 GB)

Conversion Progress: -none-

Revertible: Yes (no decryption required)

LV Name: Macintosh HD

Volume Name: Macintosh HD

Content Hint: Apple_HFS

$ diskutil list

/dev/disk0

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *1.0 TB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_CoreStorage 500.2 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

4: Microsoft Basic Data BOOTCAMP 499.5 GB disk0s4

/dev/disk1

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS Macintosh HD *499.8 GB disk1

Logical Volume on disk0s2

301C9D0B-5A66-42C5-ACEB-xxx

Unencrypted

Loner T

Level 9

59,513 points

Nov 4, 2014 8:18 AM in response to fredz85

Please post the output of sudo gpt -vv -r show /dev/disk0. The BOOTCAMP name can be changed by changing it on the Windows side, diskutil renameVolume does not work from OSX volume side for NTFS volumes.

Is Windows installed? I would expect to see a MSR partition and Microsoft Basic Data. GPT derives the names of partition types using PartitionType GUIDs which are visible in the GPT output. Please see http://en.wikipedia.org/wiki/GUID_Partition_Table for reference.

I will still suggest a new thread. 😉

fredz85

Level 1

11 points

Nov 4, 2014 10:30 AM in response to Loner T

Here you go:

gpt show: /dev/disk0: mediasize=1000555581440; sectorsize=512; blocks=1954210120

gpt show: /dev/disk0: PMBR at sector 0

gpt show: /dev/disk0: Pri GPT at sector 1

gpt show: /dev/disk0: Sec GPT at sector 1954210119

start size index contents

0 1 PMBR

1 1 Pri GPT header

2 32 Pri GPT table

34 6

40 409600 1 GPT part - C12A7328-F81F-11D2-BA4B-xx

409640 976920808 2 GPT part - 53746F72-6167-11AA-AA11-xx

977330448 1269536 3 GPT part - 426F6F74-0000-11AA-AA11-xx

978599984 2000

978601984 974686208 4 GPT part - EBD0A0A2-B9E5-4433-87C0-xx

1953288192 921600 5 GPT part - DE94BBA4-06D1-4D40-A16A-xx

1954209792 295

1954210087 32 Sec GPT table

1954210119 1 Sec GPT header

On Windows, Diskpart reports GPT partitions only.

And yes, Windows (10) works just fine (and fast).

More boot camp problems new 5k imac 3 tera fusion drive