Gapps stuck at "Mounting partitions" while installing via TWRP

Question

I'm trying to install LineageOS on my Moto E4. I've been able to successfully sideload the custom ROM and boot into Lineage, but I can't install Gapps. Specifically, after sideloading LOS, I sideload the Gapps ROM. It gets to the message "Mounting partitions" and hangs there.


— Justin Walker | Sources

Answer

I don't know the precise reason why, but it was because I was booted into TWRP through fastboot instead of from a flashed recovery partition. After flashing recovery and booting there, the Gapps install completed without issue.


— Justin Walker | Sources

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