So apparently, it is possible to boot an GS3/GS4 directly from an external SD card, if you have a valid ARM-arch kernel written to the card.
The question is:
Would it be possible to boot a custom recovery plus ROM from the external SD card for GS4 Verizon/ATT users, whose internal bootloaders are locked down?
This would require getting a blank SD card and writing a suitable ARM kernel to the card using an appropriate utility (Linux dd for example).
Any ideas?
Related
Hi guys,
sorry for this newbiest question (and more if replicated, my previous post disapeared...)
I wonder if I need a SD card to boot linux or not
In http://www.handhelds.org/moin/moin.cgi/UniversalHowtoInstallLinux
I can read:
"Prepare your device for running linux from ramdisk *and* from SD-CARD"
Seems that I need a SD card and to configure it....
But in http://gnulinux.biz/files/Universal/ramdisk/readme
I saw : "Just copy all this files either to your SD card or on your device. STart 'gnuharet.exe' and hit "RUN"."
Seems that no SD card is required...
What is the right understanding ?
Best reagards to all of amazing xda developers !
If you only want a Linux shell you can use the Ramdisk kernel, and do not need a SD card.
If you want the graphical interface (Opie or GPE) then you need the SD card.
As everyone already knows the only real way to dual boot wp7 and android currently is via a partitioned sd card. However this requires needing two sd cards, one smaller, one larger. Because I only have a 8gb would it be possible to get a blank image file (one from a fresh boot without any special data) of a 4gb or 2gb sd card? If someone could upload them then it'd make the sd partitioning much easier.
Can someone point me to a thread for setting up either or both of
Nookie Froyo or CM7 stable on a bootable microsd card. I wondered
about partitioning and which files systems were used on cards?
Do either come with CWR 3.0.2.x installed for targeting the card
instead of emmc? I have a sandisk 2gb card and a class 6 16gb card
available for targeting. Are the booted systems rooted? Can I image
the cards (via the windows image tool, or USB booted gparted image
tool) for backup or do I need to nandroid to the sdcard partition and
then copy the sdcard partition to windows for backup?
I still have to register the color nook, as the registration servers have
been down most of the day. Do I need to wait to boot the sd card
bootable until the device is registered?
thanks in advance
Followup got Nookie Froyo SD working
I searched both market and amazon app store and cannot find dolphin hd.
I find lots of add ons for HD but not the app.
rom manager says it installed CWR 3.0.1.0 but telling to reboot to recovery
doesn't work? Is it installing on the emmc instead of the sd card?
I'm confused about how rom manager would know the boot 'disk'
is SD not emmc and to manipulate SD not emmc? same for CWR?
thanks
more info -- RM did write CWR to emmc
how do I get CWR on the Nookie Froyo bootable?
how do I 'properly' shutdown Nookie Froyo (in the unix sense) so
it 'sync's and shuts down daemons, like unix 'shutdown -n' would?
Is there a rom manager & CWR that are SD card aware (knows
to write to proper sd card partition for what its doing)?
pointer to links if anyone knows?
CWR
this may help with CWR
http://forum.xda-developers.com/showthread.php?t=971197
Made a SD Bootable CWR ....
but I wonder if the software is setup to update EMMC or SD (Nookie Froyo)?
How would one know? I'm guessing since the recover system is ram based
that one takes out the SD card after booting, and inserts the card to be
targeted?
Thanks for the pointer.
I have a nook color with dual boot from sd card. The sd card having an android 3.0 version.
After I got the 1.4.1 update, I noticed that I was able to access the sd card( the boot partition alone) from the stock OS boot of nook.
But now, dont know how, I dont see that anymore.
Was this a flawed update that was fixed or am I missing something.
Do help please.
I could really use the advantage of using the bootable sd card as a regular storage card when using the stock OS of nook. I prefer reading on the stock OS of nook.
Not sure why you're not seeing the SD card anymore, does it still boot?
SD card installs create multiple partitions on the SD card and the Nook will only be able to access the first one (boot). It should be accessible with any version of the Nook default OS.
You should have a media partition with a decent amount of room (1-5gb depending on NC version). That would give you more room than the 100-or-so mb on the boot partition.
Just found out that you can point the emmc install to see the "sdcard" partition of the sd card using the following info:
racks11479 said:
use root explorer and edit vold.fstab to "4" instead of "auto" for sdcard mount
Click to expand...
Click to collapse
Yes, I can boot from it. Every time I plug in the SD card, the notification already says that it is safe to remove the SD card. In the device Info part of the setting, the "Unmount SD card" is already greyed, though it does say that the SD card is found.
It is however useful for me to know that the boot partition should always be accessible.
I did remove the SD card a couple of times without unmounting it first, could this possibly have corrupted the card?
srn_28 said:
Yes, I can boot from it. Every time I plug in the SD card, the notification already says that it is safe to remove the SD card. In the device Info part of the setting, the "Unmount SD card" is already greyed, though it does say that the SD card is found.
It is however useful for me to know that the boot partition should always be accessible.
I did remove the SD card a couple of times without unmounting it first, could this possibly have corrupted the card?
Click to expand...
Click to collapse
Try to boot the uSD card (the one with Android 3.0 on it) and see what happens.
If it can, then it's good, if not, you can say it's corrupted.
Yes, I can boot from it. So I assume the card is OK
I plugged in other uSD cards and they get recognized fine. So I assume the Nook stock OS device recognition is OK.
I should probably recreate the boot partition as a last ditch effort
I had the same problem at first, but now I have mounted the correct sdcard partition that I wanted to mount.
I couldn't get it to work with editing the vold.fstab file at first. Then at some point after I manually mounted the correct partition through adb shell and edited the vold.fstab it now works.
I've been reading this "[ROOT] H872 (up to and including 20g)" thread and came to an step where i require SD Card to flash TWRP, my device fails to format it, i can't use SD Card, anyway to flash it would OTG do the trick?