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自作osファイルに関して

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unix鉄画にも通ずるかな?一つのことをうまくやらせる、、、

コピー対象のファイルを「仮想メモリのメモリブロック」として扱い、メモリ書き込み命令でコピー
ファイルコピー=メモリブロック操作 という名の黒魔術
ファイル操作がメモリ操作だけでできる->osサイズをちいさくできるやつ

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