Issue with Accessing Full 16 MB Flash on ESP32 with MicroPython

[arunyava]

Hi everyone,

I'm using an ESP32-WROOM-32 module which has 16 MB of flash memory. However, when I check the filesystem size using the os module in MicroPython, it only shows 2 MB.

Here is the code I'm using to check the filesystem size:
import os
fs_stat = os.statvfs('/')
total_fs = fs_stat[0] * fs_stat[2]
free_fs = fs_stat[0] * fs_stat[3]
used_fs = total_fs - free_fs

print(f"Total filesystem size: {total_fs} bytes")
print(f"Used filesystem size: {used_fs} bytes")
print(f"Free filesystem size: {free_fs} bytes")
I have tried flashing the firmware with a custom partition table but still see the same issue. Below is the partition table I used:

Name, Type, SubType, Offset, Size, Flags

nvs, data, nvs, 0x9000, 0x5000,
phy_init, data, phy, 0xe000, 0x1000,
factory, app, factory, 0x10000, 0x100000,
vfs, data, fat, 0x110000, 0xEF0000,

Any help on how to utilize the full 16 MB flash memory would be greatly appreciated! I am new to micropython and esp. I want to use 16 mb spi flash

Thanks in advance.