A method, including steps of booting a computer system from a first logical disk, said first logical disk being specified by a first logical unit number, said first logical disk including first software instructions; said first software instructions configuring said computer system to replace said first logical unit number with a second logical unit number (I 31-2), said second logical unit number indicating a second logical disk; said first software instructions directing said computer system to reboot, wherein said computer system reboots from said second logical disk, said second logical disk including second software instructions; and said second software instructions configuring said computer system to add one or more additional logical unit numbers; characterized in that: said computer system is initially configured to recognize only a single logical disk; said instructions to add access to one or more additional logical disks include an interpolated driver, said interpolated driver being executed by said computer system and interposing its operation before said computer system determines a number of available logical disks, wherein said interpolated driver is configured or designated as a device driver that is loaded early during booting the computer system and able to perform operations before other device drivers that are loaded as part of booting the computer system; and configuring a flash memory device to include: said first logical disk, and said second logical disk, wherein said first logical disk includes a preboot environment, said preboot environment including instructions that perform security checks. booting a computer system from a first logical disk, said first logical disk being specified by a first logical unit number, said first logical disk including first software instructions; said first software instructions configuring said computer system to replace said first logical unit number with a second logical unit number (I 31-2), said second logical unit number indicating a second logical disk; said first software instructions directing said computer system to reboot, wherein said computer system reboots from said second logical disk, said second logical disk including second software instructions; and said second software instructions configuring said computer system to add one or more additional logical unit numbers; characterized in that: said computer system is initially configured to recognize only a single logical disk; said instructions to add access to one or more additional logical disks include an interpolated driver, said interpolated driver being executed by said computer system and interposing its operation before said computer system determines a number of available logical disks, wherein said interpolated driver is configured or designated as a device driver that is loaded early during booting the computer system and able to perform operations before other device drivers that are loaded as part of booting the computer system; and configuring a flash memory device to include: said first logical disk, and said second logical disk, wherein said first logical disk includes a preboot environment, said preboot environment including instructions that perform security checks. said computer system is initially configured to recognize only a single logical disk; said instructions to add access to one or more additional logical disks include an interpolated driver, said interpolated driver being executed by said computer system and interposing its operation before said computer system determines a number of available logical disks, wherein said interpolated driver is configured or designated as a device driver that is loaded early during booting the computer system and able to perform operations before other device drivers that are loaded as part of booting the computer system; and configuring a flash memory device to include: said first logical disk, and said second logical disk, wherein said first logical disk includes a preboot environment, said preboot environment including instructions that perform security checks.