Re: How to switch between installed kernel and developed kernel

<snip>

update-initramfs: Generating /boot/initrd.img-5.12.0-rc3-GIDI_DEV+ dpkg: warning: version '5.12.0-rc3-GIDI_DEV+' has bad syntax: invalid character in revision number dpkg: warning: version '5.12.0-rc3-GIDI_DEV+' has bad syntax: invalid character in revision number

<snip> This is a standard warning, arising because the version contains an underscore, which is against Debian Policy. Remove the underscore and retry :-) Try CONFIG_LOCALVERSION="-GIDI-DEV" Good luck - Aruna