How to dual boot Windows Phone 7 and Android on HTC HD2 with 1 SD card?

How to dual boot Windows Phone 7 and Android on HTC HD2? Simple, just get 2 SD cards. One for Windows Phone 7 and another one for Android. By default, phone will boot into WP7 when power on. To load Android, change to another SD card and power on (don’t let go power button) then load into MAGLDR bootloader. Select ‘Boot AD SD’ to load Android. However, it is not very user friendly to bring 2 SD cards all the time. So here is the step by step guide to dual boot Windows Phone 7 and Android on HTC HD2 with 1 SD card. Check out the screenshots for SD card partition details (Disk 3 is the SD card ~ 3.7GB).

Prerequisites

  • Partition Wizard Home Edition installed on PC – link
  • Windows Phone 7 installed on HTC HD2 – link
  • SD MAGLDR Android ROM for HTC HD2 – link

How to dual boot Windows Phone 7 and Android on HTC HD2 with 1 SD card?

  1. In WP7, go to ‘Settings’.
  2. Then ‘about’.
  3. Click on ‘reset your phone’.
  4. Double confirm with ‘yes’ and ‘yes’.
  5. Once phone restart, hold on power button. MAGLDR bootloader will be loaded.
  6. Take out your SD card from phone and put it into SD card reader at PC.
  7. Load Partition Wizard Home Edition.
  8. There should be 2 partitions on your SD card (200MB on the left and another larger one on the right). – Screenshot
  9. Delete the larger one.
  10. Create a partition as ‘Logical’ with ‘Unformatted’ file system.
  11. Make sure that the ‘Unallocated Space After’ is 0 MB and some space at ‘Unallocated Space Before’.
  12. Apply the changes for pending operations. – Screenshot
  13. Close Partition Wizard Home Edition.
  14. Put your SD card back to phone.
  15. Power on your phone.
  16. Setup WP7 for the first time usage.
  17. Power off it.
  18. Take out your SD card from phone and put it into SD card reader at PC.
  19. Load Partition Wizard Home Edition.
  20. The ‘Unformatted’ partition should turn into ‘Other’ file system. – Screenshot
  21. Delete the 200MB ‘Other’ partition.
  22. Create a partition as ‘Primary’ with ‘FAT32’ file system.
  23. Right click on the ‘Other’ partition and select ‘Modify’ and then ‘Set Partition As Primary’.
  24. Apply the changes for pending operations. You should have 2 primary partitions (FAT32 and Other). – Screenshot
  25. Close Partition Wizard Home Edition.
  26. Copy SD MAGLDR Android into your SD card. Follow the guide here.
  27. That’s all.

Hopefully, with this guide. More HTC HD2 users will start to use Windows Phone 7 again since they can dual boot into Android as well.