2015-11-23 18:11 GMT+01:00 William A. Mahaffey III <w...@hiwaay.net>: > [his alignment] > > Partitions aligned to 2048 sector boundaries, offset 2048 <------ *DING DING > DING* !!!! > > [your alignment] > > Partitions aligned to 16065 sector boundaries, offset 63 <----- *DING DING > DING* !!!!
My first thought when reading this was that you could have an "Advanced Format" disk with 4K sectors (as you have 1 TB 2.5" drives, especially then this can be the case!), but your alignment at a first look seems horribly wrong for such a disk, which would lead to your "slow I/O"... Can you investigate this further? And what is the exact disk model you use? Apart from that, there are in fact tools which can correct this misalignment (but always make a backup before :)). Most drive manufacturers offer a free version of an Acronis tool for their products. Felix