I was wondering when you are tune a guitar to Eflat are you tune each string to it respective flat note (so E, A, D, G, B, E to Eb, Ab, Db, Gb, Bb, Eb )?
If you want to keep the guitar in a standard tuning, then yes you would need to tune each string to to the appropriate note. There are some tunings where you would only change the tuning of a single string, such as Drop D tuning where only the low E is tuned to D. But this requires the string to be tuned down one whole step, not half a step to a flat (or sharp).
Yeah just go a half step down to the flat but be aware that some of them are gonna register as sharps not flat I believe only E and B will say Eb and Bb the rest are gonna be sharps.
Alot of tuners will register it as sharps: D# G# C# F# A# D#. Thats how my Boss TU-2 reads it.