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Created partition after bootcamp windows install - 'No Disk'

Had Windows 7 installed via bootcamp for some time and decided to go back into the mac OS and create another NTFS partition for extra storage and here I am 10 minutes later finding out this destroys the bootcamp partition.


Found this thread https://discussions.apple.com/thread/4144252?start=630&tstart=0


Setup:


Single 500GB drive

2 Partitions - 1 Mac OS, other Windows NTFS



sudo gpt -r -vv show disk0



gpt show: disk0: mediasize=500107862016; sectorsize=512; blocks=976773168

gpt show: disk0: Suspicious MBR at sector 0

gpt show: disk0: Pri GPT at sector 1

gpt show: disk0: Sec GPT at sector 976773167

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 162338320 2 GPT part - 48465300-0000-11AA-AA11-00306543ECAC

162747960 1269536 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

164017496 323990184

488007680 488765440 4 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

976773120 15

976773135 32 Sec GPT table

976773167 1 Sec GPT header





sudo fdisk /dev/disk0



Disk: /dev/disk0 geometry: 60801/255/63 [976773168 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: AF 1023 254 63 - 1023 254 63 [ 409640 - 162338320] HFS+

3: AB 1023 254 63 - 1023 254 63 [ 162747960 - 1269536] Darwin Boot

4: 0C 1023 254 63 - 1023 254 63 [ 488007680 - 488765440] Win95 FAT32L


iMac, Mac OS X (10.7.5)

Posted on Jul 24, 2013 1:55 AM

Reply
40 replies

Jul 24, 2013 7:38 AM in response to BobTheFisherman

Hi I made the post to show Christopher Murphy from the thread I linked, the required information for him to help me fix the issue of being unable to boot into a bootcamp partition and being presented with the 'No bootable device' error. I found the reason for this is repartitioning the main drive after creating a bootcamp partition.


But if you too can help me then that would be great.

Jul 24, 2013 8:02 AM in response to cranberry667

It is not clear what your question is by reading this thread. It appears you tried to create another partition after creating a Bootcamp partition. You can not do that. By doing so you have messed up your drive. You have to save off your data, erase, and format your hard drive. Then reinstall OSx. Then run Bootcamp Assistant again. Do not try to resize, add, delete, or otherwise mess with a drive that contains a Bootcamp partition.

Jul 24, 2013 8:21 AM in response to BobTheFisherman

Yer sorry I didn't think this would be found by anyone else apart from the person it was intended for.


I thought I'd have to do that too but according to Christopher Murphy it can be fixed without starting from scratch.



Christopher Murphy wrote:


Yes I know how to fix this without starting over from scratch, but it requires committment to the command line and most people turn into wimps and bail out. So unless you commit to the process I'm not going to put in the investment. In the meantime you can provide the output from the following to comfirm/deny what I think is the likely problem and solution:


sudo gpt -r -vv show disk0

sudo fdisk /dev/disk0


These are read only commands, no modification to the disk is made.


Jul 24, 2013 8:42 AM in response to Csound1

The last post he made in the main thread:



Christopher Murphy:


OK you shouldn't "do the steps" that are meant for someone else's problem. Everyone has slightly different issues that are all related, but often take slightly different steps to fix the problem or you'll make it worse. So I suggest you start a new thread and briefly explain your setup, exactly what you've done, and include the results from:

sudo fdisk /dev/disk0

sudo gpt -r -v show disk0


Then post the URL for the new thread here.




I was trying to do the sensible thing...

Jul 24, 2013 8:55 AM in response to Csound1

Yes by 'here' he means post the url of the new thread containing the information he asked for, in the same thread(main thread). Have i missed something here? It seems pretty easy to understand from the quote I just gave you.


I mean i didn't even have to go back one page in the main thread to understand what he wanted people to do.


A page back:



Christopher Murphy:


I suggest starting a new thread and posting the relevant information there, and then post the URL in this thread so I get a notification. This thread is too unweildy to keep track of multiple people's issues. Thanks.

I did the sensible thing. I just didn't make myself clear in the OP.

Jul 24, 2013 8:59 AM in response to cranberry667

cranberry667 wrote:


Yes by 'here' he means post the url of the new thread containing the information he asked for, in the same thread(main thread). Have i missed something here? It seems pretty easy to understand from the quote I just gave you.


I mean i didn't even have to go back one page in the main thread to understand what he wanted people to do.


A page back:



Christopher Murphy:


I suggest starting a new thread and posting the relevant information there, and then post the URL in this thread so I get a notification. This thread is too unweildy to keep track of multiple people's issues. Thanks.

I did the sensible thing. I just didn't make myself clear in the OP.

You have yet to tell us whether or not you posted the link in the original thread, did you?

Created partition after bootcamp windows install - 'No Disk'

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