I have always thought a minute order has to be signed to be appealable. I don’t think so anymore. Even thought Liang v. Shi (D4d3 Jun. 14, 2022 no. G060655) 2022 WL 2128432 (nonpub. opn.) is unpublished, I think it’s holding is correct that the unsigned minute order there was appealable.
Liang involved an action to enforce a marital settlement agreement. The trial court awarded the mother $100,000 in fees. But the court made the award in an unsigned minute order, and then later signed a formal order.
The father contended the minute order was not appealable because it was unsigned. And in fact it is easy to find lots of cases that say an unsigned minute order is not appealable.
But nearly all of those cases (maybe all of the published ones) deal with unsigned orders of dismissal. And under Code of Civil Procedure section 581d, an order of dismissal must be signed. (E.g., Powell v. County of Orange (2011) 197 Cal.App.4th 1573, 1578.)
Outside of dismissal orders, however, there is no requirement that a minute order be signed to be final and appealable.
Note that the appellant here was represented by a very experienced certified appellate specialist. The rules of appellate procedure can trip up even the best attorneys. Best not go it alone.