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Work-around to detect 615-cylinder hard disks

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This commit is contained in:
Jeff Parsons 2015-12-18 14:34:56 -08:00
commit e5a4a050b4
2 changed files with 17 additions and 9 deletions
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6
modules/shared/lib/diskapi.js
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@ -83,7 +83,11 @@ DiskAPI.DISKETTE_FORMATS = {
737280: [80,2,9], // media type 0xF9: 80 cylinders, 2 heads (double-sided), 9 sectors/track, (1440 total sectors x 512 bytes/sector == 737280)
1228800: [80,2,15], // media type 0xF9: 80 cylinders, 2 heads (double-sided), 15 sectors/track, (2400 total sectors x 512 bytes/sector == 1228800)
1474560: [80,2,18], // media type 0xF0: 80 cylinders, 2 heads (double-sided), 18 sectors/track, (2880 total sectors x 512 bytes/sector == 1474560)
2949120: [80,2,36] // media type 0xF0: 80 cylinders, 2 heads (double-sided), 36 sectors/track, (5760 total sectors x 512 bytes/sector == 2949120)
2949120: [80,2,36], // media type 0xF0: 80 cylinders, 2 heads (double-sided), 36 sectors/track, (5760 total sectors x 512 bytes/sector == 2949120)
/*
* The following are common early hard disk sizes, which we explicitly map to CHS values, since the BPB can mislead us when attempting to calculate total cylinders
*/
21368320:[615,4,17] // PC AT 20Mb hard disk (type 2)
};
DiskAPI.MBR = {