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Why did IBM use a proprietary ID instead of a generic standard? The answer lies in the philosophy of the ThinkPad during its golden age (the T40, T60, and X60 eras).
ahci 0000:00:1f.2: AHCI 0001.0300 32 slots 4 ports 3 Gbps 0x3 impl SATA mode ... ata3: SATA link up (UltraBay device detected) acpi ibm0068
grep . /sys/bus/acpi/devices/IBM0068:*/status # Expected: 0x0f (device present and functioning) Why did IBM use a proprietary ID instead