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03.03. Are those rumors about buggy interfaces true?




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This item is from the Yet Another Enhanced IDE/Fast-ATA/ATA-2 FAQ, by John Wehman and Peter den Haan with numerous contributions by others. (v1.92).

03.03. Are those rumors about buggy interfaces true?

Very true, unfortunately.

This FAQ doesn't really deal with specific interfaces, but two very popular interface chips have been shown to contain bugs too serious to ignore:

o the CMD640x, a dual-channel PCI to EIDE interface used on many mainboards (Intel!) and interface boards, has a number of dangerous bugs you need to be aware of.

o The PC-Tech RZ-1000, used on AT&T, Dell, Gateway and Intel boards, also has two data-corrupting bugs. See also <http://www.intel.com/procs/support/rz1000/index.htm>.

In both cases, the corruption occurs only in specific software environments and is very subtle; you can go on working for months without suspecting anything more than buggy software. The damage can be immense. For all the details, look at Roedy Green's (roedy@bix.com) "PCI EIDE controller flaws" FAQ included with his EIDE test <ftp://garbo.uwasa.fi/pc/diskutil/> program which will test your system for the bugs.

BE WARNED that you're playing Russian roulette with your data if you continue working on an affected machine without taking notice of this problem.

 

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