Messages in this thread | | | Date | Sun, 14 Mar 2010 18:21:54 -0700 | From | "H. Peter Anvin" <> | Subject | Re: ATA 4 KiB sector issues. |
| |
On 03/10/2010 01:14 AM, Denys Vlasenko wrote: > > 63s/255h is more or less "standard" now. > > Alignment issues can be solved by picking a good multiple of > _heads_ or _cylinders_: > > For first partition, pick the start at 8th head: > > cyl 0 head 1 sector 1: LBA sector 63) - bad > cyl 0 head 8 sector 1: LBA sector 8*63) - good (4k aligned) > > For any other partition, pick start cylinder which is a multiple of 8: > > cyl 8*x head 0 sector 1: LBA sector 8*x*255*63 - good (4k aligned) > > This will actually work well for *any* geometry, not only for 63s/255h.
Yes, but it does squat for a flash disk that wants, say, 256K alignment.
-hpa
| |