10 More Discussions You Might Find Interesting
1. Solaris
Hi all,
I have a EFI disk and it is use in zfs pool.
partition> p
Volume: rpool
Current partition table (original):
Total disk sectors available: 1172107117 + 16384 (reserved sectors)
Part Tag Flag First Sector Size Last Sector
0 usr wm ... (8 Replies)
Discussion started by: javanoob
8 Replies
2. Shell Programming and Scripting
I saw several thread for this issue but none addresses my issue.
I have tried read -t but the result is read bad options
My requirement is
1. Ask for input
2. If input = y or no input in 60 seconds
then continue processing
else
exit
fi
Kindly consider this urgent. (8 Replies)
Discussion started by: rprasad
8 Replies
3. Shell Programming and Scripting
Hi All,
i am trying to get sectors,cylinders,track..etc information of all present disks out of solaris machine using prtvtoc command .
Output of ptrvtoc command is as below :
bash-3.2# prtvtoc /dev/dsk/c1t0d0s0
* /dev/dsk/c1t0d0s0 partition map
*
* Dimensions:
* 512 bytes/sector... (2 Replies)
Discussion started by: omkar.jadhav
2 Replies
4. UNIX for Advanced & Expert Users
i'm writing some code to simulate the boot progress after power on
but when i try to read the 2nd sector from a floppy disk, this operation always fail with ah=0x80h which means timeout, how can i get over this problem?
my code would be like this:
$ cat boot.S
.code16
#define SETUPLEN 4... (0 Replies)
Discussion started by: wljackhero
0 Replies
5. Linux
i'm writing some code to simulate the boot progress after power on
but when i try to read the 2nd sector from a floppy disk, this operation always fail with ah=0x80h which means timeout, how can i get over this problem?
my code would be like this:
$ cat boot.S
.code16
#define SETUPLEN 4... (0 Replies)
Discussion started by: wljackhero
0 Replies
6. Linux
Hi all,
I'm kind of new to programming in Linux & c/c++. I'm currently writing a FileManager using Ubuntu Linux(10.10) for Learning Purposes. I've got started on this project by creating a loopback device to be used as my virtual hard disk. After creating the loop back hard disk and mounting it... (23 Replies)
Discussion started by: shen747
23 Replies
7. Filesystems, Disks and Memory
I found a document: Bad block HOWTO for smartmontools
My hard drive is Maxtor:
root]# fdisk -lu /dev/hda
Disk /dev/hda: 81.9 GB, 81964302336 bytes
255 heads, 63 sectors/track, 9964 cylinders, total 160086528 sectors
Units = sectors of 1 * 512 = 512 bytes
Disk identifier: 0x3f4e3f4d
... (0 Replies)
Discussion started by: justinian
0 Replies
8. Shell Programming and Scripting
hello every one ,
this is my first participation in the forum , I hope it'll be a good start
within a script I would like to put some code to read i\p from standard i\p using read command if it reads Y it will terminate the script if it reads N it will continue execution , if no i\p is... (2 Replies)
Discussion started by: Blue_shadow
2 Replies
9. Filesystems, Disks and Memory
Is there a way to determine the number of available spare sectors on a disk ? as it may be useful for notifying a user to take a backup of the disk before it runs into a medium error. (6 Replies)
Discussion started by: rednex
6 Replies
10. Shell Programming and Scripting
any idea on how to timeout the read statement for ksh?
for bash u can use read -t option
-t timeout
Cause read to time out and return failure if a complete
line of input is not read within timeout seconds. This
option has ... (2 Replies)
Discussion started by: ashterix
2 Replies
PREP(8) System Manager's Manual PREP(8)
NAME
prep, format - prepare hard and floppy diskettes
SYNOPSIS
disk/prep [ -ra ] special [ type ]
disk/format [ -t type ] [ -f ] [ -d ] [ -b bfile ] [ -c csize ] [ -l label ] drive [ files ... ]
DESCRIPTION
A partition table is stored on a hard disk to specify the division of the physical disk into a set of logical units. On Plan 9 the parti-
tion table is a list of triples: name, starting sector, and ending sector. The kernel fabricates the first two partitions, disk and parti-
tion; the disk partition records the starting and ending sectors for the whole disk, and the partition partition, typically the last sector
on the disk, holds the partition table itself.
Special is the maximal prefix of names of the logical units on the disk, for example #w/hd0. Prep reads and prints the associated parti-
tion table and then enters a simple interactive mode to control editing the table.
The options are:
-r (read only) prohibits writing the table on disk.
-a automatically create default partitions if no partition table already exists. These include partitions for DOS, a boot kernel, an
NVRAM substitute, a kfs(4) file system, and, if room remains, a swap partition.
Format prepares for use the floppy diskette in the disk file named drive, for example /dev/fd0disk. The options are:
-f Do not physically format the disc. Used to install an MS-DOS filesystem on a previously formatted disc. With this option, drive can
be a plain file.
-t specify a density and type of disk to be prepared. The possible types are:
31/2DD 31/2" double density, 737280 bytes
31/2HD 31/2" high density, 1474560 bytes
51/4DD 51/4" double density, 368640 bytes
51/4HD 51/4" high density, 1146880 bytes
The default is the highest possible on the device, unless -f is used, in which case the default is 31/2HD.
-d add MS-DOS parameter block, file access table (FAT), and root directory to the start of the floppy.
The remaining options have effect only when -d is specified:
-b use the contents of bfile as the bootstrap block installed in sector 0.
-c use a DOS cluster size of csize sectors when creating the DOS FAT.
-l add a label when creating the DOS parameter block.
Again under -d, any files listed are added, in order, to the root directory of the MS-DOS filesytem. The files are contiguously allocated
and created with the READONLY attribute set.
The file /sys/src/boot/pc/bb is an example of a suitable bfile to make the disk a boot disk. It gets loaded by the BIOS at 0x7C00, reads
the root directory into address 0x7E00, and looks at the first root directory entry. If that file is called B.COM, it uses single sector
reads to load the file into address 0x10000 and then jumps to the loaded file image.
EXAMPLE
Create a Plan 9 boot floppy on a previously formatted diskette:
disk/format -f -b bb -d /dev/fd0disk /386/b.com
SOURCE
/sys/src/cmd/disk/prep.c
/sys/src/cmd/disk/format.c
/sys/src/boot/pc/bb.s
SEE ALSO
floppy(3), wren(3), b.com(8)
PREP(8)