https://www.psdevwiki.com/ps3/Recovery_Menu#4._Rebuild_Database
https://www.psdevwiki.com/ps3/Talk:Recovery_Menu
And yes, booting into recovery mode is done by changing an eeprom flag:
https://www.psdevwiki.com/ps3/SC_EEPROM
There is also HDD Copy mode.
https://www.psdevwiki.com/ps3/Talk:Recovery_Menu
And yes, booting into recovery mode is done by changing an eeprom flag:
| 0x48C61 | 1 | Recover Mode Flag |
https://www.psdevwiki.com/ps3/SC_EEPROM
There is also HDD Copy mode.


