The following patch was inspired by this thread: http://marc.info/?l=linux-ide&m=126677421807814&w=2 The particular device that is causing me grief is from Apacer. Ureadahead's runtime is significantly affected, and hence the boot speed, depending on whether a device is determined to be SSD. Peter M. Petrakis (1): libata: SSD horkage introduction drivers/ata/libata-core.c | 5 +++++ drivers/ata/libata-scsi.c | 9 +++++++-- include/linux/libata.h | 1 + 3 files changed, 13 insertions(+), 2 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html