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fd(7D) Devices SunOS 5.5

SEE ALSO fdformat(1), uname(1), dd(1M), drvconﬁg(1M), vold(1M), read(2), write(2),

driver.conf(4), dkio(7I), fdio(7I)

Solaris 2.x x86 Hardware Compatibility List

DIAGNOSTICS fd<n>: <command name> failed (<sr1> <sr2> <sr3>)

The <command name> failed after several retries on drive <n>. The three hex

values in parenthesisare the contents of status register 0, status register 1, and

status register 2 of the Intel 8272, the Intel 82072, and the Intel 82077 Floppy Disk

Controller on completion of the command as documented in the data sheet for

that part. This error message is usually followed by one of the following, inter-

preting the bits of the status register:

fd<n>: not writable

fd<n>: crc error blk <block number>

There was a data error on <block number>.

fd<n>: bad format

fd<n>: timeout

fd<n>: drive not ready

fd<n>: unformatted diskette or no diskette in drive

fd<n>: block <block number> is past the end! (nblk=<total block count>)

The operation tried to access a block number that is greater than the

total number of blocks.

fd<n>: b_bcount 0x<op_size> not % 0x<sect_size>

The size of an operation is not a multipleof the sector size.

fd<n>: overrun/underrun

fd<n>: host bus error

There was a hardware error on a system bus.

SPARC Overrun/underrun errors occur when accessing a diskette while the system is heavily

loaded. These errors are caused by a hardware limitation and cannot be ﬁxed in the

software.

NOTES 3.5" high density diskettes have 18 sectors per track and 5.25" high densitydiskettes have

15 sectors per track. They can cross a track (though not a cylinder) boundary without los-

ing data, so when usingdd(1M) to or from a diskette, you should specify bs=18k or mul-

tiples thereof for 3.5" diskettes, and bs=15k or multiples thereof for 5.25" diskettes.

The SPARC fd driver is not an unloadable module.

Under Solaris x86, the conﬁguration of the ﬂoppy drives is speciﬁed inCMOS

conﬁguration memory. Use the BIOS setup program or an EISA or Micro Channel

conﬁguration program for the system to deﬁne the diskette size and density/capacity for

each installed drive. Note thatMS-DOS may operate the ﬂoppy drives correctly, even

though theCMOS conﬁguration may be in error. Solaris x86 relies on theCMOS

7D-114 modiﬁed 25 Aug 1995

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Adaptec AHA-1520A Wartungshandbuch Seite 118