PC will no longer boot after following interrupted upgrade/update instructions

[Aragorn]

@jeffjot

Does the chroot environment, install them on the actual PC, instead of the USB instance?

Yes.

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@jeffjot

When I try:

$ sudo pacman -Sy
it says, “failed to sychronize all databases (invalid or corrupted database (PGP Signature))”

error: GPGME error: no data

[root tip] [How To] Mitigate and prevent GPGME error when syncing your system

You are getting a message when syncing your system error: GPGME error: No data error: failed to synchronize all databases (invalid or corrupted database (PGP signature)) Before you continue [SOLVED] Error updating system (error: GPGME error: No data) / Newbie Corner / Arch Linux Forums Pacman troubleshooting - Manjaro Pacman looking for database signature files Also see this pacman bugreport from 2015 - which was closed as not a bug but a matter of configuration. FS#44445 : "GPGME err…