Solving bootcamp problems after partition

Question

hey guys,
recently i got struck in a bootcamp problem,
this occurred when i installed b-e-t-a of recent os x 'ten' public,
bootcamp icon was not visible in alt-option boot drive selection
panel, but it was visible in startup disk in system preferences,when
i select windows as startup disk a screen saying "no bootable disk
insert and press any key..." used to appear, but later when i found
this Repairing Boot Camp after creating new partitionBy MacTavish_10, July 25, 2014
i solved it to a point in which i can make windows or bootcamp
icon appear in alt-option panel,but when i try to boot into it,
underscore starts blinking continuously but no windows starts booting.
please help....
macbook pro mid 2012, 500gb hd, windows 8.1, os x 9.4 to 10 b-e -t-a

Answer 1

The Apple Bootcamp implementation uses a Hybrid MBR, which has a limit of 4 partitions. OSX utilities use GPT, while Windows uses MBR scheme.
When you installed you-know-what, it removed the Hybrid MBR and put the entire disk into a Protective MBR as your fdisk shows.
Option 1.
1. Backup your Windows partition to an external disk using OSX side. You may not be able to use it again.
2. Please backup your Mavericks side via Time Machine.
3. Please remove you-know-what from your system, and the corresponding GPT partitions.
4. Erase your disk, and re-store from 2 and re-install Windows.
Option 2.
1. Backup your Windows partition to an external disk using Winclone. You may not be able to use it again.
2. Please backup your Mavericks side via Time Machine.
3. Please remove you-know-what from your system, and the corresponding GPT partitions.
4. Erase your disk, and re-store from 2 and re-install Windows via Winclone.
Option 3.
1. Backup your Windows partition to an external disk using OSX side. You may not be able to use it again.
2. Please backup your Mavericks side via Time Machine.
3. Please remove you-know-what from your system, and the corresponding GPT partitions.
4. Create a new Hybrid MBR, with appropriate information and bring up Windows, using Startup Repair, if necessary.
Option 4.
1. Backup your Windows partition to an external disk using OSX side. You may not be able to use it again.
2. Please backup your Mavericks side via Time Machine.
3. Create a new Hybrid MBR (different from Option 3), with appropriate information and bring up Windows, using Startup Repair, if necessary.