controller/ata/capacity.notes.txt

5  * Common Development and Distribution License (the "License").
11  * and limitations under the License.
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
34 case that a drive supports LBA access and therefore the BIOS's geometry
54 somewhere?  I *have* searched the specs and Hale's HIW docs and
55 the "ATA FAQ" from Wehman and den Hahn, and I still don't understand
59 which words 57-58 do *not* represent the product of words 54, 55, and
68 implement this algorithm in deriving the capacity and geometry
70 hasn't done that in recent incarnations, and I'm loath to mess
71 with what the BIOS and the drive have figured out unless it
88 >somewhere?  I *have* searched the specs and Hale's HIW docs and
89 >the "ATA FAQ" from Wehman and den Hahn, and I still don't understand
93 >which words 57-58 do *not* represent the product of words 54, 55, and
101 this feature is not being used or it is being used and implemented
104 If you have no need to use CHS mode, then just ignore words 1, 3, 6 and
107 the capacity that the current CHS geometry can address and [57:58] must be
122     and does [54]*[55]*[56] == [57:58]?
126      a different heads and sectors and repeat this step.
130 2b) Does the drive support LBA and is [1]*[3]*[6] <= [60:61]?
132    - Yes, assume 60:61 are correct, and go to 2c)
136 2c) Issue a Init Drv Params and set your favorite heads and sectors.
147     from [3] and [6] -or- issue an Init Drv Params with your favorite
148     heads and sectors.  Compute the number of cylinders:
157 that it worked.  Issue a read command and make sure you can read what you
161 All we did here was find a CHS geometry and a drive capacity that should