The Acer Aspire 5050 risks less breakage than some other Acer models, but still has some Windows hooks in the SATA code that will get disabled by OSI(Linux). Unless you notice something related to SATA running better with OSI(Linux) enabled, I'm going to keep this one blacklisted to disable OSI(Linux). thanks, -Len If (\_OSI ("Windows 2006")) { Store (0x40, ^OSTB) Store (0x40, ^TPOS) } If (\_OSI ("Linux")) { Store (0x01, LINX) # NOP, as usual Store (0x80, ^OSTB) # NOP on this model Store (0x80, ^TPOS) # overwrites TPOS above, # referenced from SATA } BIOS Information Vendor: Acer Version: v1.3309 Release Date: 04/17/07 Address: 0xE5230 Runtime Size: 110032 bytes ROM Size: 1024 kB ... Handle 0x0001, DMI type 1, 27 bytes. System Information Manufacturer: Acer, inc. Product Name: Aspire 5050 Version: Not Applicable Serial Number: LXAXD0C038722086C42502 UUID: C0EEA45F-A586-D811-A729-001B24465C81 Wake-up Type: Power Switch SKU Number: Not Specified Family: Not Specified Handle 0x0002, DMI type 2, 8 bytes. Base Board Information Manufacturer: Acer, Inc. Product Name: Prespa M - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html