How to flash everything except the SPIFFs partition

[william.ferguson.au]

I'm using CMake with ESPIDF 4.4.4

I have a large SPIFFs partition (4MB) which take a long time to flash each time I make a change to the app.
But the SPIFFS partition itself hardly ever changes.

Is there a simple way to flash the app binary, partition table (which includes an entry for the SPIFFS partition) etc, but NOT flash the unchanged SPIFFs partition?

[william.ferguson.au]

Anyone?
Or is this the wrong part of the forum for this question?

[ESP_Sprite]

The spiffs contents get created/flashed by a spiffs_create_partition_image() line in a CMakeLists.txt file somewhere. If you comment that line out by prefixing it with a '#', the partition isn't created/flashed anymore.

[william.ferguson.au]

Huh thanks.

I was sure that when I tried that previously it still wrote the SPIFFs partition.