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| author | Karel Zak <kzak@redhat.com> | 2006-12-07 00:26:26 +0100 |
|---|---|---|
| committer | Karel Zak <kzak@redhat.com> | 2006-12-07 00:26:26 +0100 |
| commit | b22550fa1506e7cf4101bacc694842678908aaf2 (patch) | |
| tree | f447dc9c312f7b75ea8a3c5df5d2a5bb6726160b /sys-utils | |
| parent | d162fcb550a77875c8f58fda0e0a0bd91f211c99 (diff) | |
| download | util-linux-old-b22550fa1506e7cf4101bacc694842678908aaf2.tar.gz | |
Imported from util-linux-2.12k tarball.
Diffstat (limited to 'sys-utils')
| -rw-r--r-- | sys-utils/rdev.8 | 19 | ||||
| -rw-r--r-- | sys-utils/readprofile.c | 2 |
2 files changed, 18 insertions, 3 deletions
diff --git a/sys-utils/rdev.8 b/sys-utils/rdev.8 index 98dce2b7..4b27cd3f 100644 --- a/sys-utils/rdev.8 +++ b/sys-utils/rdev.8 @@ -6,7 +6,7 @@ rdev \- query/set image root device, RAM disk size, or video mode .SH SYNOPSIS .nf -.BR "rdev [ \-rvh ] [ \-o " offset " ] [ " image " [ " value " [ " offset " ] ] ]" +.BR "rdev [ \-Rrvh ] [ \-o " offset " ] [ " image " [ " value " [ " offset " ] ] ]" .BR "rdev [ \-o " offset " ] [ " image " [ " root_device " [ " offset " ] ] ]" .BR "ramsize [ \-o " offset " ] [ " image " [ " size " [ " offset " ] ] ]" .BR "vidmode [ \-o " offset " ] [ " image " [ " mode " [ " offset " ] ] ]" @@ -149,8 +149,23 @@ At offset 502 there used to be the device number of the swap device (in Linux 0.12), and "rdev -s" or "swapdev" would set this. However, since Linux 0.95 this constant is not used any longer, and the swap device is specified using the -.IR swapon () +.BR swapon (2) system call. + +At offset 504 there used to be the size of the ramdisk in kilobytes. +One would specify a size, and this much was grabbed off the top of memory. +In Linux 1.1.39 it became also possible to set this value on the kernel +command line. +In Linux 1.3.48 the ramdisk setup was changed. Ramdisk memory is now +taken from the buffer cache, so that the ramdisk can grow dynamically. +The interpretation of the ramdisk word was changed to a word of which +the high order bit is a prompt flag (1: prompt for ramdisk: +"VFS: Insert ramdisk floppy and press ENTER" - this is needed with a +two-floppy boot), the next bit a load flag (1: load ramdisk), +and the low order 11 bits give the starting block number of the +root filesystem image (so that one can have a single floppy boot). +See also +.IR linux/Documentation/ramdisk.txt . .SH AUTHORS .nf Originally by Werner Almesberger (almesber@nessie.cs.id.ethz.ch) diff --git a/sys-utils/readprofile.c b/sys-utils/readprofile.c index 61ba428c..d70eb733 100644 --- a/sys-utils/readprofile.c +++ b/sys-utils/readprofile.c @@ -56,7 +56,7 @@ static char *prgname; /* These are the defaults */ -static char defaultmap[]="/usr/src/linux/System.map"; +static char defaultmap[]="/boot/System.map"; static char defaultpro[]="/proc/profile"; static char optstring[]="M:m:np:itvarVbs"; |