[Q] Android kexec kernel won't install in secondary ROM - Nexus 5 Q&A, Help & Troubleshooting

I moved my primary Android ROM to a secondary ROM in MultiROM but now it won't boot, even after re-flashing the kexec patched kernel. The kernel flash itself reports success but I get the kexec error when trying to boot that Android ROM from MultiROM. The primary CM12.1 ROM boots fine.

I realize now that the primary ROM must have the kexec patched kernel. That cleared this up.

Related

[Q] Is it okay to set pacrom as first rom when dualbooting?

I used blackhawk's dual booting method, and i switched my first rom to pacman rom. It says that I need to flash blackhawk's next kernel to use dualbooting, but is it ok to flash the kernel after flashing pacman rom?

[Q] Problem that happened using Multirom, now i have an unusable phone

I had the latest version of CM11 on my Opo 64 GB, was also using Multirom and Miui 4.10.24.
Tried to install the 4.10.31 version, but i did it wrong (i did not go into TWRP, then Multirom, add zip and install, but i just selected install rom and flashed the 4.10.31 zip file).
Now, the main CM11 OS is lost, i cannot boot into it, and i cannot also boot into MIUI.
So, how can i get my CM11 back?
I tried flashing the official version but it gives me error while trying to install it through TWRP.
Also if i reboot the phone and try to choose the MIUI it says
"error, kexec-hardboot support is required to boot this rom.
install kernel with kexec-hardboot support to your internal rom.
Any help would be greatly appreciated!
kidstretch said:
I had the latest version of CM11 on my Opo 64 GB, was also using Multirom and Miui 4.10.24.
Tried to install the 4.10.31 version, but i did it wrong (i did not go into TWRP, then Multirom, add zip and install, but i just selected install rom and flashed the 4.10.31 zip file).
Now, the main CM11 OS is lost, i cannot boot into it, and i cannot also boot into MIUI.
So, how can i get my CM11 back?
I tried flashing the official version but it gives me error while trying to install it through TWRP.
Also if i reboot the phone and try to choose the MIUI it says
"error, kexec-hardboot support is required to boot this rom.
install kernel with kexec-hardboot support to your internal rom.
Any help would be greatly appreciated!
Click to expand...
Click to collapse
I'm probably not understanding, but can you boot from off , into recovery then > TWRP?
JeffDC said:
I'm probably not understanding, but can you boot from off , into recovery then > TWRP?
Click to expand...
Click to collapse
Yes I can, managed to install MIUI only, latest version.
I also installed Multirom again (on MIUI) and it downloaded cm11s kernel).
Ok managed to go back to my old miui os, now I have 2 miui os and no cm11, also downloaded the Franco kernel 30. How can i check if the cm11 that i had before is still there, if not how can i install it again without screwing my already working miui?
update:
After some tests, this is what's happening.
I believe I have no CM11S on my phone, that is gone!
I have the MIUI V5 running, but when i flash the franco kernel, the phone is stuck on boot (1+1 logo), i have to flash the kernel_kexec_bacon_cm11s to make it boot in MIUI (working).
So, now i have a working rom that works through Mutlirom and I cannot flash a working CM11S rom on the phone.
Any help would be great guys!

No cm12 rom boots in multirom

My setup -
Multirom modded twrp
Multirom
Stock Rom with multirom kernel ( AK )
I can boot 4.4 based roms as secondary rom with multirom for e.g the official Paranoid Android.
BUT
i have tried almost 5-10 CM12 roms and none of them boot as secendory roms.
ALTHOUGH,
the stock cm12 unofficial build had booted once ( the 1st time i used multirom ).
But after that neither has that rom booted, nor any other cm12 rom!!
Please help me!
That's because lollipop ROMs can only be used as a primary, it's been pretty widely discussed.
Transmitted via Bacon
They can be installed as secondary with a modified updater-script file that the Dev needs to provide as it's ROM specific from my understanding. Try the temasek unofficial cm12 ROM and use zarchiver to delete the original updater-script file and replace it with the modified one provided by @katinatez
This will allow you to install the ROM. If it doesn't boot after that that's a different problem
Sent From Lollipopified Bacon Goodness!

Dirty unicorns rom kernel

Im about to flash dirty unicorns 5.0.2 . I already have twrp recovery and have downloaded the elementalx 2.08 kernel.. Do i have to install kernel in order to install the rom or everything will be fine with the stock lollipop kernel?
Usually the ROM is packed with the kernel that is compatible. So every ROM has it's 'default' kernel You can replace it with ElementalX afterwards though
GiwrgosP- said:
Im about to flash dirty unicorns 5.0.2 . I already have twrp recovery and have downloaded the elementalx 2.08 kernel.. Do i have to install kernel in order to install the rom or everything will be fine with the stock lollipop kernel?
Click to expand...
Click to collapse
This
experience7 said:
Usually the ROM is packed with the kernel that is compatible. So every ROM has it's 'default' kernel You can replace it with ElementalX afterwards though
Click to expand...
Click to collapse
BUT it's ALWAYS better to read a few pages from the ROM's thread before flashing it.
Actually if you flash BlissPop rom today then your device won't boot (issue with stock kernel). So you must flash a custom kernel to be able to boot to Android.

How to make ROM MultiRom Compatible

I am trying to make a ROM and the Zip is ready to flash I want to keep the ROM as secondary via MultiRom but after I install the ROM via MultiRom and try to boot it up it shows error no boot up scripts so,I want to know a fix to the issue.
Any help will be appreciated.

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