Flash Filesystem
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Switch 2 has 256GB of UFS (Universal Flash Storage). All contents are signed and encrypted to some degree.
Structure
The Switch 2's UFS storage is distributed over 4 LUNs.
LUN0
| Offset | Size | Description |
|---|---|---|
| 0x0 | 0x2000 | BRBCT |
| 0x2000 | 0x1C000 | Reserved |
| 0x1E000 | 0x2000 | MB1 BCH |
| 0x20000 | Variable | MB1 |
| 0x9E000 | 0x2000 | PSC BCH |
| 0xA0000 | Variable | PSC |
| 0xC0000 | 0x2000 | MBCT BCH |
| 0xC2000 | Variable | MBCT |
| 0x103000 | 0x1000 | BootConfig |
| 0x104000 | Variable | Package2 |
LUN1
LUN1 is a copy of LUN0, presumably a backup for the update process.