1.\" Copyright (c) 1983, 1991 The Regents of the University of California. 2.\" All rights reserved. 3.\" 4.\" %sccs.include.redist.man% 5.\" 6.\" @(#)rxformat.8 6.6 (Berkeley) 03/16/91 7.\" 8.Dd 9.Dt RXFORMAT 8 10.Os BSD 4.2 11.Sh NAME 12.Nm rxformat 13.Nd format floppy disks 14.Sh SYNOPSIS 15.Nm rxformat 16.Op Fl d 17.Ar special 18.Sh DESCRIPTION 19The 20.Nm rxformat 21program formats a diskette in the specified drive 22associated with the special device 23.Ar special . 24.Pf ( Ar Special 25is normally 26.Pa /dev/rx0 , 27for drive 0, or 28.Pa /dev/rx1 , 29for drive 1.) 30.Pp 31Available option: 32.Bl -tag -width Ds 33.It Fl d 34Force double density formatting. 35By default, the diskette is formatted single density; 36Single density is compatible 37with the 38.Tn IBM 393740 standard (128 bytes/sector). 40In double density, each sector 41contains 256 bytes of data. 42.El 43.Pp 44Before formatting a diskette 45.Nm rxformat 46prompts for verification if standard input is a tty 47(this allows a user to cleanly 48abort the operation; note that 49formatting a diskette will destroy any existing data). 50Formatting is done by the hardware. 51All sectors are zero-filled. 52.Sh DIAGNOSTICS 53.Bl -tag -width Ds 54.It Sy \&No such device 55means that the drive is not ready, 56usually because no disk is in the drive or the drive door is open. 57Other error messages are selfexplanatory. 58.El 59.Sh FILES 60.Bl -tag -width /dev/rx? -compact 61.It Pa /dev/rx? 62.El 63.Sh SEE ALSO 64.Xr rx 4 65.Sh AUTHOR 66Helge Skrivervik 67.Sh BUGS 68A floppy may not be formatted if the 69header info on sector 1, track 0 has been damaged. Hence, it is not 70possible to format a completely degaussed disk. 71(This is actually a problem in the DEC hardware.) 72.Sh HISTORY 73The 74.Nm 75command appeared in 76.Bx 4.2 . 77