Hi, Jerry Juan~
Very intresting task....
Well, to manage 2 sd-card at the same time:
1. patch vold in several places, to allow it manage multi-devices at
same time. But, vold is just "tip of the iceberg"
2. patch/add a loooot of component on framework level. As there are
located the main concept of sd-card usage in Android OS.
3. and as last, you have to read the next thread. ;)
http://groups.google.com/group/android-developers/browse_thread/thread/70566347c0953488/5466def3ced9bfde?show_docid=5466def3ced9bfde

Best regards,
Dmitry.


On 9 апр, 12:26, Jerry Juan <yilch...@gmail.com> wrote:
> Really? It seems the source code only support one MMC device in the
> same time.
> And the state follow first MMC device, that should bethe reason of why
> the eMMC can't be mounted when SD card is inserted.
>
> I am still finding the solution for this case.
> I can't let eMMC work with VOLD when SD card is inserted.
>
> On 4月8日, 下午10時21分, Deva R <r.deva...@gmail.com> wrote:
>
>
>
> > Hi,
> > I was also told that, android cant dynamically support two MMC/SD
> > cards.,  and android always treats boot device as single flash device
> > (assumes nand).
> > Curious to know why/how its like this..
> > -Deva
>
> > On Thu, Apr 8, 2010 at 11:34 AM, Jerry Juan <yilch...@gmail.com> wrote:
> > > Hello all,
>
> > > My device got two MMCdevice, one is eMMC the other is for SD card.
> > > It seems vold can't mount eMMC when SD card is exist.
> > > My vold.conf want to use eMMC to replace SD card.  SD card will be
> > > used for other purpose
>
> > > When the SD card is exist, eMMC can't be mounted automatically. It
> > > shows below log.
> > > D/MountListener(   59): handleEvent volume_nomedia:/sdcard
> > > D/MountListener(   59): handleEvent ums_disabled
> > > D/MountListener(   59): handleEvent ums_disconnected
>
> > > When SD card is not exist, the vold mount eMMC successfully.
> > > Does anyone met this problem?
>
> > > BTW, it seems the MountListener.java only can handle one device,
> > > right?
> > > Anyone have experience to handle above two MMC device via vold?
>
> > > --
> > > unsubscribe: android-porting+unsubscr...@googlegroups.com
> > > website:http://groups.google.com/group/android-porting
>
> > > To unsubscribe, reply using "remove me" as the subject.

-- 
unsubscribe: android-porting+unsubscr...@googlegroups.com
website: http://groups.google.com/group/android-porting

Reply via email to