FG

When a disk read or disk write occurs, where does the data go?

Fresh3 days ago
Mar 15, 20265096 views
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Problem

I understand that there is such a thing as a disk controller which contains a buffer, but was wondering if the CPU reads directly from this buffer, or whether the data must first go to a specific location in memory, and then allow itself to be read by the CPU? Does anyone also know what the buffer …

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Fix for: When a disk read or disk write occurs, where does the data go?

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For a disk read the data flow is essentially: after the read/write assembly is at the requested cylinder, the requested r/w head is selected. at each sector, the sector ID is read. If the sector number that was read matches the requested sector numb…

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