No OS Installed after custom rom flash?

[loeffler23]

I got my pixel XL today and I unlocked the bootloader and tried to flash a custom rom from twrp but after the flash in the reboot menu it says no OS installed? Tried 2 different roms both with the same result. I know I am doing all the steps correctly but I have no idea what is going wrong. When rebooted it just sits at google logo. and yes I tried to google to find the solution but I didn't find anything.

 

[Donric13]

I got my pixel XL today and I unlocked the bootloader and tried to flash a custom rom from twrp but after the flash in the reboot menu it says no OS installed? Tried 2 different roms both with the same result. I know I am doing all the steps correctly but I have no idea what is going wrong. When rebooted it just sits at google logo. and yes I tried to google to find the solution but I didn't find anything.

You have to pay attention to the a/b partition thing with pixel phones. With Oreo i always had to flash rom to both slots (a and b). You can change slots in twrp in reboot menu. With this a/b thing on pixel phones flashing custom rom and kernel is quite different... Always pay attention to the steps provided from the dev in the thread you found the custom rom.

 

[veskostoev]

I got my pixel XL today and I unlocked the bootloader and tried to flash a custom rom from twrp but after the flash in the reboot menu it says no OS installed? Tried 2 different roms both with the same result. I know I am doing all the steps correctly but I have no idea what is going wrong. When rebooted it just sits at google logo. and yes I tried to google to find the solution but I didn't find anything.

Try to just change the slot and check if boots.

 

[Pain-N-Panic]

From what I understand, the ROM will flash to opposite slot that you're currently booted into. So if you boot into twrp on slot a, if will flash the ROM to slot b and vice versa. If I were you, I'd flash the ROM to both slots.

 

[loeffler23]

Thank you for all the help, right now I'm just on rooted 8.0 with twrp as recovery. I'll prolly mess with some stuff over the weekend.