On Fri, 11 10:47 , Otto Moerbeek wrote: > Well, we are slowly moving away from any CHS considerations in > disklabel. For various reasons it is not yet possible to completely do > away with CHS in all cases. But for most purposes and with LBA capable > disks, you can use ANY offset. Just put in sector numbers, in that > case they are not rounded to cylinder boundaries.
> You want to leave some room for things like alternative boot loaders > and who knows. Skipping the first track is a safe practice. We used to > start at the 2nd track (offset 63 in most cases) but that has been > moved to 64 to accomodate 4k block disks. To my understanding, matching the erase block size of SSD memory can produce a gain in performance, however the most important thing is to align at 4k boundaries. As this is the case, the current (pre 4.9) state in OpenBSD is handling the setup of SSD disks in the best possible way automatically. From your replies I conclude that there should be no additional configuration necessary. > It is amazing how old limitations tend to stick into the collective > memory, despite all the work done to overcome the limitations. Sadly, this is exactly the case. Typical case of vague memories from the past that have never been updated/refreshed. Thanks nevertheless for helping me understand the current state regarding SSD disks. All the best, /Markus
