A file called partitions.csv is located in the root of the esp-idf project folder. With content similar to:

# Name,   Type,  SubType, Offset,   Size, Flags
nvs,      data,  nvs,     0x9000,   0x4000,
otadata,  data,  ota,     0xd000,   0x2000,
phy_init, data,  phy,     0xf000,   0x1000,
ota_0,    app,   ota_0,   0x10000,  0x120000,
ota_1,    app,   ota_1,   0x130000, 0x120000,
config,   data,  phy,     0x250000, 0x4000,
logging,  data,  phy,     0x254000, 0x145000,

You must tell ESP-IDF to stop using the default layout and look at your new CSV file instead. In idf.py menuconfig navigate to Partition Table.Change Partition Table Type from “Single factory app” to Custom partition CSV file. Ensure the Custom partition CSV filename setting is set to partitions.csv.Press S to save and Q to quit.

Edit the contents of the partitions.csv file and run the following commands:

idf.py menuconfig
idf.py partition-table
idf.py build

Flash the partition table by:

idf.py -p /dev/ttyUSB0 partition-table-flash

Or you can do a full flash which will also write the table.

idf.py -p /dev/ttyUSB0 flash

Read the Partition Table Flashed on a Connected ESP32If you want to pull the partition table off a physical ESP32 board to see what is currently flashed on it, you can use the target partition-table-dump.

idf.py -p [PORT] partition-table-dump

It invokes esptool.py in the background to read the binary partition data directly from the chip's flash memory (always located at offset 0x8000 or 0x9000 depending on your SDK configuration) and prints the structure to your terminal.

esptool.py --port /dev/ttyUSB0 erase_region 0x254000 0x145000

idf.py -p /dev/ttyACM0 flash
python -m esptool --chip esp32c3 -p /dev/ttyACM0 -b 460800 --before default_reset --after hard_reset write_flash --flash_mode dio --flash_size 4MB --flash_freq 80m 0x0 build/bootloader/bootloader.bin 0x8000 build/partition_table/partition-table.bin 0xd000 build/ota_data_initial.bin 0x10000 build/LCR-Meter.bin 0x250000 default.config

python -m esptool --chip esp32c3 -p /dev/ttyACM0 -b 460800 --before default_reset --after hard_reset write_flash --flash_mode dio --flash_size 4MB --flash_freq 80m 0x10000 build/ESR-Meter.bin

esptool.py --port /dev/ttyACM0 -b 460800 --before default_reset --chip esp32c3  read_flash 0x250000 4096 downloaded.partition

esptool.py --port /dev/ttyACM0  write_flash --flash_mode qio  0x250000 default.config

esptool.py --port /dev/ttyACM0 -b 460800 --before default_reset --chip esp32c3  read_flash 0x250000 4096 downloaded.config