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This is an idea to make the HD2 faster and fancy, I worked with Xylograph to make it more usable and easy to implement by common users.

Index

  • Post 1 Introduction
  • Post 2 ROMs, Scripts, Installer template for Devs by Xylograph
  • Post 3 Q&A

Introduction
We have SD ROMs for very long time, but I think most of the people should agree with me that the SD ROMs are slower than NAND ROMs. because the SD ROMs use system.ext4 and data.ext4 files to store all the ROM contant on the FAT partition, the IO access is the bottleneck.
My Class10 SD card has 10MB/s R/W speed, but the NAND flash R/W speed is only about 4MB/s. so if we can directly install the ROMs to SDCARD and boot from SDCARD we will get lots of benifits:
  1. Faster Read/Write speed than NAND ROMs
  2. Bigger data partition for user space (depends on how big the ext4 partition on SDCARD)
  3. Install servel ROMs at the same time. and each ROM share the same space
  4. Muilt-boot support, easy to switch between the ROMs been installed.
The NativeSD Rom is a new kind of ROM it needs an ext4 partition on your SDCARD.

This thread will tell you how to install a ROM to SDCARD and give some script templates for ROM Devs to make the ROM installer which can support install the ROM to NAND flash or SD/EXT4.

Install the ROM to SD/EXT4 will not effact the ROM(WM or Android) on NAND flash, NativeSD should support run from MAGLDR CLK or WM6.5(need test).

Important Notes:
Backup all the SDCARD content to PC before you create the ext4 partition on SDCARD.


Change Log:


05-09-2012 @2nd Post [05-09-2012] NativeSD Dual Installer v2 [nand/sdext][wip]
10-09-2012 Add NativeSD CM7 script template
13-09-2012 nativeSDMultiBoot Version4 Credits to datagr
20-09-2012 nativeSDMultiBoot Version5 Credits to datagr
26-09-2012 nativeSDMultiBoot Version6 Credits to datagr
30-10-2012 nativeSDMultiBoot Version9 Credits to datagr
30-10-2012 New initrd mod for NativeSD Credits to marco.palumbi
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