fix(vhd-lib): fix geometry computation for more than 2^28 sectors (#3451)
Fixes https://gitlab.com/vates/xoa-support/issues/942 It was a bug in the disk geometry computation.
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committed by
Julien Fontanet
parent
b22514646e
commit
ac2ab21826
@@ -1,13 +1,10 @@
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import { SECTOR_SIZE } from './_constants'
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export default function computeGeometryForSize (size) {
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const totalSectors = Math.ceil(size / 512)
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const totalSectors = Math.min(Math.ceil(size / 512), 65535 * 16 * 255)
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let sectorsPerTrackCylinder
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let heads
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let cylinderTimesHeads
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if (totalSectors > 65535 * 16 * 255) {
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throw Error('disk is too big')
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}
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// straight copypasta from the file spec appendix on CHS Calculation
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if (totalSectors >= 65535 * 16 * 63) {
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sectorsPerTrackCylinder = 255
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