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<TITLE>1.8.3 Hard drive controller requirements</TITLE>
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<H2><A NAME=SECTION00383000000000000000>1.8.3 Hard drive controller requirements</A></H2>
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<A NAME=528>&#160;</A>
<A NAME=529>&#160;</A>
You do not need to have a hard drive to run Linux; you can run a
minimal system completely from floppy. However, this is slow and very
limited, and many users have access to hard drive storage anyway.
You must have an AT-standard (16-bit) controller. There is support in
the kernel for XT-standard (8 bit) controllers; however, most controllers
used today are AT-standard. Linux should support all MFM, RLL, and IDE
controllers. Most, but not all, ESDI controllers are supported---only
those which do ST506 hardware emulation.
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The general rule for non-SCSI hard drive and floppy controllers is that
if you can access the drive from MS-DOS or another operating system, you
should be able to access it from Linux.
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<A NAME=530>&#160;</A>
Linux also supports a number of popular SCSI drive controllers, although
support for SCSI is more limited because of the wide range of controller
interface standards. Supported SCSI controllers include the Adaptec
AHA1542B, AHA1542C,
AHA1742A (BIOS version 1.34), AHA1522, AHA1740, AHA1740 (SCSI-2 controller,
BIOS 1.34 in Enhanced mode); Future Domain 1680, TMC-850, TMC-950;
Seagate ST-02; UltraStor SCSI; Western Digital WD7000FASST. Clones which
are based on these cards should work as well.
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<P><ADDRESS>
<I>Matt Welsh <BR>
mdw@sunsite.unc.edu</I>
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