……因为我当时的理论是，他们改装了磁盘磁头把 bit 写得很微弱，导致回读时根本分不清是 1 还是 0。学校里有个朋友有一本 Don Worth 写的《Beneath Apple DOS》，这书彻底把我年轻的脑袋震撼到了。在读那本书之前，我完全不相信有哪个人能把这么复杂的系统理解得如此透彻还能讲得清清楚楚。
…because my theory at the time was that they modded the disk head to write the bit weakly so that it couldn't distinguish a one from a zero during readback. A friend at school had a copy of Don Worth's Beneath Apple DOS, which absolutely blew my teenage mind. Until reading that book, I didn't think that any single human could understand and clearly explain a complex system so thoroughly.
Don Worth 和 Pieter Lechner 写的《Beneath Apple DOS》当年就是我的圣经。读这本书简直让我大开眼界、直呼卧槽，打开了一扇通往无限可能的大门，更不用说让我对防拷保护（copy protection）的底层逻辑有了深入得多的了解……
"Beneath Apple DOS" by Don Worth and Pieter Lechner was my bible back then. Reading this book absolutely blew my mind and opened up a world of possibilities, not mentioning a much more intimate knowledge of how copy protection…
说得太准了，我记忆里当年的圈子就是这个样子的。《Beneath Apple DOS》（以及后来的 ProDOS）是当年 cracker 们的圣经。这几乎是你能买到的唯一一本详细讲解软盘驱动器最底层工作原理的正规文档。当时又没有 internet……
This is spot on, that's exactly how I remember the scene back then. "Beneath Apple DOS" (and later ProDOS) were the cracker bibles back then. It's pretty much the only official documentation you could buy that described how the floppy drives work at the lowest levels. There was no internet…
嗯……整篇文章都在讲大家逆向工程 Apple DOS，居然提都没提《Beneath Apple DOS》？那本书最后成了我那堆 Apple ][ 书籍里被翻得最烂的一本。
Hmmm, whole article about people reverse engineering apple dos, and no mention of "Beneath Apple Dos"? That ended up being one of my apple ][ books that nearly fell apart.
……不会读完一本后冒出“那关于……呢？”然后发现掉进了一个无底洞。这种情况多多少少有一点，但通常会有第三方挺身而出写书来填补这些明显的空白。《Beneath Apple DOS/PRODOS》整个系列就是典型的例子。你只要在 Stack Overflow 上花个 10 分钟就能看出来，上面很多都是瞎子给瞎子带路，大部分回答要么不全、要么有偏见、……
…didn't get through reading one and go "but what about..." only to discover a dark hole. There was a bit of that, but usually 3rd parties stepped up and wrote books to fill in obvious gaps. The whole "Beneath Apple DOS/PRODOS" series is an example of that. One only needs to spend about 10 mins on stack overflow to see that much of it is the blind leading the blind, where most of the answers are incomplete, biased,…
在我的藏书室某个角落有一本《Beneath Apple DOS》，里面详尽记录了 Apple DOS 的架构、磁盘上的存储格式等。虽然过去很久了，但我还记得当时被这个 DOS 的整洁和可复用性深深折服。一本极好的书，如果你……
Somewhere in my library I have a copy of "Beneath Apple DOS" which was a detailed documentation of how Apple DOS wss structured, on-disk formats, etc. It has been awhile but I recall being impressed at how clean and reusable the DOS was. An excellent book if you…
……因为我当时的理论是，他们改装了磁盘磁头把 bit 写得很微弱，导致回读时根本分不清是 1 还是 0。学校里有个朋友有一本 Don Worth 写的《Beneath Apple DOS》，这书彻底把我年轻的脑袋震撼到了。在读那本书之前，我完全不相信有哪个人能把这么复杂的系统理解得如此透彻还能讲得清清楚楚。
…because my theory at the time was that they modded the disk head to write the bit weakly so that it couldn't distinguish a one from a zero during readback. A friend at school had a copy of Don Worth's Beneath Apple DOS, which absolutely blew my teenage mind. Until reading that book, I didn't think that any single human could understand and clearly explain a complex system so thoroughly.
Don Worth 和 Pieter Lechner 写的《Beneath Apple DOS》当年就是我的圣经。读这本书简直让我大开眼界、直呼卧槽，打开了一扇通往无限可能的大门，更不用说让我对防拷保护（copy protection）的底层逻辑有了深入得多的了解……
"Beneath Apple DOS" by Don Worth and Pieter Lechner was my bible back then. Reading this book absolutely blew my mind and opened up a world of possibilities, not mentioning a much more intimate knowledge of how copy protection…
说得太准了，我记忆里当年的圈子就是这个样子的。《Beneath Apple DOS》（以及后来的 ProDOS）是当年 cracker 们的圣经。这几乎是你能买到的唯一一本详细讲解软盘驱动器最底层工作原理的正规文档。当时又没有 internet……
This is spot on, that's exactly how I remember the scene back then. "Beneath Apple DOS" (and later ProDOS) were the cracker bibles back then. It's pretty much the only official documentation you could buy that described how the floppy drives work at the lowest levels. There was no internet…
嗯……整篇文章都在讲大家逆向工程 Apple DOS，居然提都没提《Beneath Apple DOS》？那本书最后成了我那堆 Apple ][ 书籍里被翻得最烂的一本。
Hmmm, whole article about people reverse engineering apple dos, and no mention of "Beneath Apple Dos"? That ended up being one of my apple ][ books that nearly fell apart.
……不会读完一本后冒出“那关于……呢？”然后发现掉进了一个无底洞。这种情况多多少少有一点，但通常会有第三方挺身而出写书来填补这些明显的空白。《Beneath Apple DOS/PRODOS》整个系列就是典型的例子。你只要在 Stack Overflow 上花个 10 分钟就能看出来，上面很多都是瞎子给瞎子带路，大部分回答要么不全、要么有偏见、……
…didn't get through reading one and go "but what about..." only to discover a dark hole. There was a bit of that, but usually 3rd parties stepped up and wrote books to fill in obvious gaps. The whole "Beneath Apple DOS/PRODOS" series is an example of that. One only needs to spend about 10 mins on stack overflow to see that much of it is the blind leading the blind, where most of the answers are incomplete, biased,…
在我的藏书室某个角落有一本《Beneath Apple DOS》，里面详尽记录了 Apple DOS 的架构、磁盘上的存储格式等。虽然过去很久了，但我还记得当时被这个 DOS 的整洁和可复用性深深折服。一本极好的书，如果你……
Somewhere in my library I have a copy of "Beneath Apple DOS" which was a detailed documentation of how Apple DOS wss structured, on-disk formats, etc. It has been awhile but I recall being impressed at how clean and reusable the DOS was. An excellent book if you…