On 05/23/11 12:45 PM, Keith Roberts wrote: > Would a defrag program work on a SSD? for some values of 'work'. as its completely unaware of the internal block remapping of the SSD, all it would really do would be to churn the data around. I've read the only way to reset the block remapping on most consumer SSDs is to write all zeros on them, some vendors say twice. so, make a full file system backup, zero the disk (maybe zero it again), then restore that backup. NOW your data is all contiguous both in file system logical space AND in remapped SSD block space. ugh. -- john r pierce N 37, W 123 santa cruz ca mid-left coast