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author | ru <ru@FreeBSD.org> | 2004-07-02 23:13:00 +0000 |
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committer | ru <ru@FreeBSD.org> | 2004-07-02 23:13:00 +0000 |
commit | 6294018a208cf7742b1c021a9b75c26962505571 (patch) | |
tree | 502f17eb951b74c914af346cd4dbff252350c082 /usr.sbin/fdread | |
parent | 3f44360851448f8816c22f6b72e8dd5c9924c27f (diff) | |
download | FreeBSD-src-6294018a208cf7742b1c021a9b75c26962505571.zip FreeBSD-src-6294018a208cf7742b1c021a9b75c26962505571.tar.gz |
Mechanically kill hard sentence breaks.
Diffstat (limited to 'usr.sbin/fdread')
-rw-r--r-- | usr.sbin/fdread/fdread.1 | 33 |
1 files changed, 22 insertions, 11 deletions
diff --git a/usr.sbin/fdread/fdread.1 b/usr.sbin/fdread/fdread.1 index 438a268..090a91d 100644 --- a/usr.sbin/fdread/fdread.1 +++ b/usr.sbin/fdread/fdread.1 @@ -45,7 +45,8 @@ .Sh DESCRIPTION The .Nm -utility reads floppy disks. Effective read blocking based on the track +utility reads floppy disks. +Effective read blocking based on the track size is performed, and floppy-specific error recovery of otherwise bad blocks can be enabled. .Pp @@ -53,7 +54,8 @@ The .Nm utility will always read an entire floppy medium, and write its contents to -the respective output file. Unlike other tools like +the respective output file. +Unlike other tools like .Xr dd 1 , .Nm automatically uses a read block size that is more efficient than @@ -70,18 +72,22 @@ The utility accepts the following options: .Bl -tag -width indent .It Fl q -Turn on quiet mode. By default, the medium parameters of the device +Turn on quiet mode. +By default, the medium parameters of the device are being written to standard error output, progress will be indicated by the approximate number of kilobytes read so far, and errors will be printed out in detail, including the information about the location of -recovered data in the output. In quiet mode, none of these messages +recovered data in the output. +In quiet mode, none of these messages will be generated. .It Fl r -Enable error recovery. By default, +Enable error recovery. +By default, .Nm stops after the first unrecovered read error, much like .Xr dd 1 -does. In recovery mode, however, one of two recovery actions will be +does. +In recovery mode, however, one of two recovery actions will be taken: .Bl -bullet .It @@ -109,7 +115,8 @@ The parameter must be a valid floppy disk device. .It Fl f Ar fillbyte Value of the fill byte used for dummy blocks in the output file in -recovery mode. Defaults to +recovery mode. +Defaults to .Ql 0xf0 . (Mnemonic: .Dq foo . ) @@ -174,13 +181,16 @@ and as well as the location of the error (physical cylinder, head, and sector number, plus the .Dq sector shift value , -respectively). See the manual for the NE765 or compatible for details +respectively). +See the manual for the NE765 or compatible for details about the status register contents. .Pp The FDC's status is then examined to determine whether the error is -deemed to be recoverable. If error recovery was requested, the +deemed to be recoverable. +If error recovery was requested, the location of the bad block in the output file is indicated by its -(hexadecimal) bounds. Also, a summary line indicating the total number +(hexadecimal) bounds. +Also, a summary line indicating the total number of transfer errors will be printed before exiting. .Sh SEE ALSO .Xr dd 1 , @@ -206,7 +216,8 @@ Program and man page by Concurrent traffic on the second floppy drive located at the same FDC will make error recovery attempts pointless, since the FDC status obtained after a read error occurred cannot be guaranteed to actually -belong to the erroneous transfer. Thus using option +belong to the erroneous transfer. +Thus using option .Fl r is only reliable if .Ar device |