No bootable device found 5K iMac..HELP!!! Please?

ISO is a Win 7 Home Premium SP1 X64 only. 3.7 GB total. No other versions of Windos or x86 versions attached.

Here is my screen output:

Last login: Sun Mar 8 09:58:34 on ttys000

DEREKs-iMac:~ derekrevella$ diskutil list

/dev/disk0

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *121.3 GB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_CoreStorage 121.0 GB disk0s2

3: Apple_Boot Boot OS X 134.2 MB disk0s3

/dev/disk1

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *1.0 TB disk1

1: EFI EFI 209.7 MB disk1s1

2: Apple_CoreStorage 937.3 GB disk1s2

3: Apple_Boot Recovery HD 650.0 MB disk1s3

4: Microsoft Basic Data BOOTCAMP 62.0 GB disk1s4

/dev/disk2

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS Macintosh HD *1.1 TB disk2

Logical Volume on disk0s2, disk1s2

D8910214-0CC0-433C-967E-12C8B2EF494A

Unencrypted Fusion Drive

/dev/disk3

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *1.0 TB disk3

1: EFI EFI 209.7 MB disk3s1

2: Apple_CoreStorage 999.9 GB disk3s2

3: Apple_Boot Boot OS X 134.2 MB disk3s3

/dev/disk4

#: TYPE NAME SIZE IDENTIFIER

0: FDisk_partition_scheme *2.0 TB disk4

1: Windows_NTFS My Book 2.0 TB disk4s1

/dev/disk5

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS Time Machine *999.5 GB disk5

Logical Volume on disk3s2

C95A6680-EB2B-4898-9F29-5EECACFB4814

Unlocked Encrypted

DEREKs-iMac:~ derekrevella$ diskutil cs list

CoreStorage logical volume groups (2 found)

|

+-- Logical Volume Group 2EDB8807-AFCF-41E1-BCDA-6F438470F393

| =========================================================

| Name: Macintosh HD

| Status: Online

| Size: 1058333908992 B (1.1 TB)

| Free Space: 114688 B (114.7 KB)

| |

| +-< Physical Volume 0C09A2C5-498E-4D35-8ACA-84B264462D96

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

| | Index: 0

| | Disk: disk0s2

| | Status: Online

| | Size: 120988852224 B (121.0 GB)

| |

| +-< Physical Volume 1E0F380B-D81B-479D-BC16-EC8D264BF33A

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

| | Index: 1

| | Disk: disk1s2

| | Status: Online

| | Size: 937345056768 B (937.3 GB)

| |

| +-> Logical Volume Family B15B0DBE-A3A8-42B6-B655-F343E7783511

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

| Encryption Status: Unlocked

| Encryption Type: None

| Conversion Status: NoConversion

| Conversion Direction: -none-

| Has Encrypted Extents: No

| Fully Secure: No

| Passphrase Required: No

| |

| +-> Logical Volume D8910214-0CC0-433C-967E-12C8B2EF494A

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

| Disk: disk2

| Status: Online

| Size (Total): 1052478537728 B (1.1 TB)

| Conversion Progress: -none-

| Revertible: No

| LV Name: Macintosh HD

| Volume Name: Macintosh HD

| Content Hint: Apple_HFS

|

+-- Logical Volume Group 8D28A59C-F3FC-4F88-AB3D-A84CE9412D25

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

Name: Untitled

Status: Online

Size: 999860912128 B (999.9 GB)

Free Space: 5943296 B (5.9 MB)

|

+-< Physical Volume E396DF7A-22A9-4CD3-B9B8-AD36EBC06BFE

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

| Index: 0

| Disk: disk3s2

| Status: Online

| Size: 999860912128 B (999.9 GB)

|

+-> Logical Volume Family 3042FBEB-10F0-4101-8A38-351029136F95

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

Encryption Status: Unlocked

Encryption Type: AES-XTS

Conversion Status: Complete

Conversion Direction: -none-

Has Encrypted Extents: Yes

Fully Secure: Yes

Passphrase Required: Yes

|

+-> Logical Volume C95A6680-EB2B-4898-9F29-5EECACFB4814

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

Disk: disk5

Status: Online

Size (Total): 999502643200 B (999.5 GB)

Conversion Progress: -none-

Revertible: No

LV Name: Time Machine

Volume Name: Time Machine

Content Hint: Apple_HFS

DEREKs-iMac:~ derekrevella$ sudo gpt -vv -r show /dev/disk0

Password:

gpt show: /dev/disk0: mediasize=121332826112; sectorsize=512; blocks=236978176

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 236978175

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-00A0C93EC93B

409640 236306352 2 GPT part - 53746F72-6167-11AA-AA11-00306543ECAC

236715992 262144 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

236978136 7

236978143 32 Sec GPT table

236978175 1 Sec GPT header

DEREKs-iMac:~ derekrevella$ sudo fdisk /dev/disk0

Disk: /dev/disk0 geometry: 14751/255/63 [236978176 sectors]

Signature: 0xAA55

Starting Ending

#: id cyl hd sec - cyl hd sec [ start - size]

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

1: EE 1023 254 63 - 1023 254 63 [ 1 - 236978175] <Unknown ID>

2: 00 0 0 0 - 0 0 0 [ 0 - 0] unused

3: 00 0 0 0 - 0 0 0 [ 0 - 0] unused

4: 00 0 0 0 - 0 0 0 [ 0 - 0] unused

DEREKs-iMac:~ derekrevella$

if you'll note in my original post, I had these drives disconnected when trying to install. I will do it again however. and I'll post what you requested.

...Disconnected and re-attempted. Still get "no Bootable" error as before.

Terminal output:

DEREKs-iMac:~ derekrevella$ sudo gpt -vv -r show /dev/disk1

Password:

Sorry, try again.

Password:

gpt show: /dev/disk1: mediasize=1000204886016; sectorsize=512; blocks=1953525168

gpt show: /dev/disk1: Suspicious MBR at sector 0

gpt show: /dev/disk1: Pri GPT at sector 1

gpt show: /dev/disk1: Sec GPT at sector 1953525167

start size index contents

0 1 MBR

1 1 Pri GPT header

2 32 Pri GPT table

34 6

40 409600 1 GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B

409640 1830752064 2 GPT part - 53746F72-6167-11AA-AA11-00306543ECAC

1831161704 1269536 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

1832431240 376

1832431616 121092096 4 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

1953523712 1423

1953525135 32 Sec GPT table

1953525167 1 Sec GPT header

DEREKs-iMac:~ derekrevella$ sudo fdisk /dev/disk1

Disk: /dev/disk1 geometry: 121601/255/63 [1953525168 sectors]

Signature: 0xAA55

Starting Ending

#: id cyl hd sec - cyl hd sec [ start - size]

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

1: EE 1023 254 63 - 1023 254 63 [ 1 - 409639] <Unknown ID>

2: AC 1023 254 63 - 1023 254 63 [ 409640 - 1830752064] <Unknown ID>

3: AB 1023 254 63 - 1023 254 63 [1831161704 - 1269536] Darwin Boot

4: 0B 1023 254 63 - 1023 254 63 [1832431616 - 121092096] Win95 FAT-32

DEREKs-iMac:~ derekrevella$

It shows under Hi speed. I have attached a screenshot.

Terminal out on usb stick:

DEREKs-iMac:~ derekrevella$ sudo fdisk /dev/disk7

Password:

Disk: /dev/disk7 geometry: 1886/255/63 [30310400 sectors]

Signature: 0xAA55

Starting Ending

#: id cyl hd sec - cyl hd sec [ start - size]

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

*1: 0B 1023 254 63 - 1023 254 63 [ 2 - 30310398] Win95 FAT-32

2: 00 0 0 0 - 0 0 0 [ 0 - 0] unused

3: 00 0 0 0 - 0 0 0 [ 0 - 0] unused

4: 00 0 0 0 - 0 0 0 [ 0 - 0] unused

DEREKs-iMac:~ derekrevella$

I Have tried both letting boot camp reboot into the install environment and using the option key to manually select the windows thumb drive. Neither have worked. I will reset NVRAM and SMC tomirrow and let you know if it works. I truly appreciate your help thus far.

So I reset NVRAM and SMC. I also ensured everything was physically removed from the imac save for the WININSTALL USB. I first let bootcamp restart the iMac and it failed to boot with the "No bootable" error. Then I restarted using the option key and manually selected the windows drive and it still gave me the error. I'm out of ideas 😟

As soon as I get home from work I will run the disk repair. One question, I will run a backup first either way, but will running the repair wipe my that disk?

Also, please forgive my ignorance but exactly how do I utilize the UEFI boot? do I simply select it and it will auto launch the windows install from the USB or is there more too it than that? If it's the better option I would rather do it that way rather than legacy bootcamp but I will await your response. Thanks so much for your help!

Ok so now I'm really in trouble. Did everything exactly as you said above but during format, it kicked out an error saying something to the effect of "Format failed - could not rediscover disk" and now I have lost 219 GB and I can't revert it. What do I do now?

Here is what Disk Utility said after trying to create the freespace partition

2015-03-09 18:45:19 +0000: Disk Utility started.

2015-03-09 18:49:30 +0000: Preparing to partition disk: “APPLE HDD ST1000DM003 Media”

2015-03-09 18:49:30 +0000: Checking prerequisites for resizing Logical-Physical volume stack

2015-03-09 18:49:30 +0000: Shrinking Logical-Physical volume stack

2015-03-09 18:49:30 +0000: Verifying file system.

2015-03-09 18:49:30 +0000: Using live mode.

2015-03-09 18:49:30 +0000: Performing live verification.

2015-03-09 18:49:30 +0000: Checking Journaled HFS Plus volume.

2015-03-09 18:49:59 +0000: Checking extents overflow file.

2015-03-09 18:49:59 +0000: Checking extents overflow file.

2015-03-09 18:49:59 +0000: Checking catalog file.

2015-03-09 18:49:59 +0000: Checking multi-linked files.

2015-03-09 18:49:59 +0000: Checking catalog hierarchy.

2015-03-09 18:49:59 +0000: Checking extended attributes file.

2015-03-09 18:49:59 +0000: Checking volume bitmap.

2015-03-09 18:49:59 +0000: File system check exit code is 0.

2015-03-09 18:49:59 +0000: Shrinking file system

2015-03-09 18:50:33 +0000: Shrinking Logical Volume

2015-03-09 18:50:33 +0000: Resizing Core Storage Logical Volume structures

2015-03-09 18:50:34 +0000: Resized Core Storage Logical Volume to 895036293120 bytes

2015-03-09 18:50:34 +0000: Shrinking Core Storage Physical Volume from 999345127424 to 779902812160 bytes

2015-03-09 18:50:34 +0000: Shrinking Core Storage data structures

2015-03-09 18:50:34 +0000: Resizing Core Storage Physical Volume structures

2015-03-09 19:00:53 +0000: Resized Core Storage Physical Volume to 779902812160 bytes

2015-03-09 19:00:53 +0000: Copying booter

2015-03-09 19:01:06 +0000: Shrinking partition for Physical Volume and adding new partitions

2015-03-09 19:01:06 +0000: Modifying partition map

2015-03-09 19:01:37 +0000: A problem occurred; undoing all changes.

2015-03-09 19:01:37 +0000: Copying booter

2015-03-09 19:01:51 +0000: Growing Core Storage data structures

2015-03-09 19:01:52 +0000: A problem occurred; undoing all changes.

2015-03-09 19:01:52 +0000: Growing Logical Volume

2015-03-09 19:01:52 +0000: Resizing Core Storage Logical Volume structures

2015-03-09 19:01:52 +0000: Partition failed for disk APPLE HDD ST1000DM003 Media Couldn’t rediscover disk after operation.

Also, here's this if it's any help:

Last login: Mon Mar 9 19:21:42 on console

DEREKs-iMac:~ derekrevella$ diskutil cs list

CoreStorage logical volume groups (1 found)

|

+-- Logical Volume Group 2EDB8807-AFCF-41E1-BCDA-6F438470F393

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

Name: Macintosh HD

Status: Online

Size: 900891664384 B (900.9 GB)

Free Space: 114688 B (114.7 KB)

|

+-< Physical Volume 0C09A2C5-498E-4D35-8ACA-84B264462D96

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

| Index: 0

| Disk: disk0s2

| Status: Online

| Size: 120988852224 B (121.0 GB)

|

+-< Physical Volume 1E0F380B-D81B-479D-BC16-EC8D264BF33A

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

| Index: 1

| Disk: disk1s2

| Status: Online

| Size: 779902812160 B (779.9 GB)

|

+-> Logical Volume Family B15B0DBE-A3A8-42B6-B655-F343E7783511

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

Encryption Status: Unlocked

Encryption Type: None

Conversion Status: NoConversion

Conversion Direction: -none-

Has Encrypted Extents: No

Fully Secure: No

Passphrase Required: No

|

+-> Logical Volume D8910214-0CC0-433C-967E-12C8B2EF494A

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

Disk: disk2

Status: Online

Size (Total): 895036293120 B (895.0 GB)

Conversion Progress: -none-

Revertible: No

LV Name: Macintosh HD

Volume Name: Macintosh HD

Content Hint: Apple_HFS

DEREKs-iMac:~ derekrevella$