You can make a difference in the Apple Support Community!

When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

User profile for user: mikenmar
mikenmar Author
User level: Level 1
5 points

Error copying Windows 10 files to USB

I'm trying to do a fresh install of Windows 10 on a late 2015 iMac running El Capitan 10.11.3, but I'm getting errors.


I've downloaded the ISO file from Windows; it's the 64 bit English version. The file name is Win10_1511_English_x64.iso and I've checked the SHA1, so I know it's good.


I'm trying to make a USB drive in Boot Camp, but I'm getting errors when I try to set up the USB. I'm using a 16GB USB 2.0 flash drive, brand is PNY. I've used Disk Utility to format it to MS-DOS (FAT), with the Scheme set to Master Boot Record.


After I get to the stop where Boot Camp warns "The drive will be erased", I get this error: "Your bootable USB drive could not be created" and "An error occurred while formatting the disk"


If I click Continue and try it again, it seems to format OK, but then when it starts copying over the Windows files, I get this error: "Boot Camp installation failed" and "An error occurred while copying the Windows installation files."


I've Googled these errors and found a lot of responses, but none of the fixes seem to work for me. It's not a matter of the ISO image being mounted -- I've made sure it's unmounted when starting up Boot Camp, but that doesn't help.


I've recently used this USB flash drive to install Windows on my Macbook Pro successfully. And I tried another brand of USB flash drive, but I got the same problem.


Any Help? LonerT, my old friend??

iMac, OS X El Capitan (10.11.3)

Posted on Mar 5, 2016 11:03 PM

Reply
20 replies
User profile for user: skyglin
skyglin
User level: Level 1
4 points

Jun 26, 2016 4:32 PM in response to mikenmar

I have encounter almost the same problem as yours, after trying all different methods in this thread I have finally figured out it's an issue with the Fusion Drive.


This problem is my fusion drive split into 2 separate drives in Disk Utility, and I found a reddit discussion board that help me recombine them back to one Fusion Drive.


See below from p_darragh on this reddit discussion. Hope this helps!


https://www.reddit.com/r/applehelp/comments/3b5q0t/my_fusion_drive_split_into_2_ separate_drives/

p_darragh

Most likely you removed the Core Storage settings when you reset the computer. To confirm, try doing 

diskutil cs list
, and if you get back an error about "No Core Storage volumes found" (or something like that), then keep following from here. Otherwise, post back the output of 
diskutil list; diskutil cs list
and we'll see what we can do.

First, take inventory of your partitions with 

diskutil list
. Identify the device identifiers of the two disks you want to combine. I'm going to assume they're 
/dev/disk0
and 
/dev/disk1
.

Then we create a new logical volume group:

diskutil cs createLVG "LVG-1" /dev/disk0 /dev/disk1

(Obviously change the name to something you'd prefer.)

Now you need to create a logical volume within this LVG:

diskutil cs createLV "LVG-1" HFS+J "My New Volume" 100%

This creates a volume named "My New Volume" in the logical volume group "LVG-1", and takes up all of the available space.

When you create an LVG from two different physical media that operate at different speeds (e.g. an SSD and a platter drive), OS X automatically infers that it should be used as a Fusion drive.

Edit: Updated for compliance.

Reply
User profile for user: cheyuk
cheyuk
User level: Level 1
4 points

Sep 29, 2016 7:53 PM in response to mikenmar

mikenmar,


Just wondering if you have resolved this issue as I appear to be having the same issue as you. I originally had the drive in a Fusion Drive setup (128GB SSD + 3TB HDD) with Windows 10 installed and working fine.


Since then, I have "unfused" the Fusion Drive setup and using each drive separately like you seem to have it set up and cannot get it installed at all.


I might try put the machine back into a Fusion Drive setup and try again and see what happens.


Hope you read this and I look forward to your reply.


edit: not sure why I didn't originally see skyglin's post... is there no way to have the drives unfused but still have OSX/Bootcamp on the SSD and the 3TB HDD as a drive only for OSX?

Reply
User profile for user: Loner T
Loner T
User level: Level 9
59,526 points

Sep 29, 2016 8:30 PM in response to cheyuk

cheyuk wrote:


edit: not sure why I didn't originally see skyglin's post... is there no way to have the drives unfused but still have OSX/Bootcamp on the SSD and the 3TB HDD as a drive only for OSX?

Yes. They are not unfused, but using diskutil cs resizeStack manually and using the SSD as the PV rather than the HDD as the PV, it is possible to install Bootcamp on SSD, leaving a part of the SSD and the entire HDD as a Fusion drive. All the 2011/2012 Minis I have are setup this way. Here is an example on a 256G SSD/1TB HDD. With HDDs larger than 2TB, BCA uses a specific 'sandwich' layout to work around MBR issues.


diskutil list

/dev/disk0

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *256.1 GB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_CoreStorage 128.0 GB disk0s2

3: Apple_Boot Boot OS X 134.2 MB disk0s3

4: Microsoft Basic Data BOOTCAMP 127.7 GB disk0s4

/dev/disk1

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *1.0 TB disk1

1: EFI EFI 209.7 MB disk1s1

2: Apple_CoreStorage 999.3 GB disk1s2

3: Apple_Boot Boot OS X 650.0 MB disk1s3

/dev/disk2

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS OSX-FusionHD *1.1 TB disk2


diskutil cs list

CoreStorage logical volume groups (1 found)

|

+-- Logical Volume Group DF140929-90E7-48E1-AC3D-C9C75BA88D1D

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

Name: OSX-FusionHD

Status: Online

Size: 1127375384576 B (1.1 TB)

Free Space: 69632 B (69.6 KB)

|

+-< Physical Volume C856A74C-EB57-4D1F-8223-0A22215218ED

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

| Index: 0

| Disk: disk0s2

| Status: Online

| Size: 128030257152 B (128.0 GB)

|

+-< Physical Volume 80D91A14-CCC9-47B1-B071-B9ADFF23924F

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

| Index: 1

| Disk: disk1s2

| Status: Online

| Size: 999345127424 B (999.3 GB)

|

+-> Logical Volume Family 019D610F-21AC-4B54-AB0A-6D5F90D520A7

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

Encryption Status: Unlocked

Encryption Type: None

Conversion Status: NoConversion

Conversion Direction: -none-

Has Encrypted Extents: No

Fully Secure: No

Passphrase Required: No

|

+-> Logical Volume D9DC0F70-38C7-4AE6-BAC4-CFBE0F8D4F68

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

Disk: disk2

Status: Online

Size (Total): 1118844862464 B (1.1 TB)

Conversion Progress: -none-

Revertible: No

LV Name: OSX-FusionHD

Volume Name: OSX-FusionHD

Content Hint: Apple_HFS

You can see examples of diskutil cs commands in OSX and Bootcamp discussion .

Also see the man page of diskutil cs resizestack .

Reply

Error copying Windows 10 files to USB

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.
Learn more Sign up