Bytes Per Physical Sectors on a Modern Hard Drive

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d2alphame
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Bytes Per Physical Sectors on a Modern Hard Drive

Post by d2alphame »

How many bytes are there on a physical sector on modern hard drives? I read recently in some places that its 4K bytes (4096 bytes). Just want to be sure before I start reading/writing on hard drive.
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NickJohnson
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Re: Bytes Per Physical Sectors on a Modern Hard Drive

Post by NickJohnson »

It's practically always 512 bytes, AFAIK. CDs are also almost always 2048 bytes per sector. In any case, it should be possible to read the number of bytes per sector using the ATA interface if you want to handle the weird hardware.
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Tyler
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Re: Bytes Per Physical Sectors on a Modern Hard Drive

Post by Tyler »

http://en.wikipedia.org/wiki/Advanced_Format

However, early adopters translate to 512-byte sectors in the Disk Controller to support legacy systems.
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