07-13-2012
Coming back to your comment on raw device. I think if I replace read operations with writes and do a Fsync() call right after, then I am sure that I am getting raw access there. Also with hdparm, one can disable the write-cache.
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LEARN ABOUT CENTOS
gnome-disks
GNOME-DISKS(1) gnome-disk-utility GNOME-DISKS(1)
NAME
gnome-disks - the GNOME Disks application
SYNOPSIS
gnome-disks [OPTIONS]
DESCRIPTION
gnome-disks is the command to launch the GNOME Disks application. Disks provides a way to inspect, format, partition and configure disks
and block devices.
The Disks application is single-instance. What this means is that if the application is not already running when the gnome-disks command is
invoked, it will get launched and the command invocation will block until the application exits. Otherwise the existing application
instance will be used and the gnome-disks command will exit immediately.
OPTIONS
The following options are understood:
--block-device DEVICE
Switches to the Disks application and selects the block device given by DEVICE (for example, /dev/sda).
--block-device DEVICE --format-device [--xid WINDOW-ID]
Shows the "Format Volume" dialog for the block device given by DEVICE (for example, /dev/sdb1). If WINDOW-ID is given, makes the dialog
transient to the given XID.
--help
Prints a short help text and exits.
AUTHOR
Written by David Zeuthen <zeuthen@gmail.com> with a lot of help from many others.
BUGS
Please send bug reports to either the distribution bug tracker or the upstream bug tracker at
https://bugzilla.gnome.org/enter_bug.cgi?product=gnome-disk-utility.
SEE ALSO
gnome-disk-image-mounter(1), udisks(8)
GNOME
March 2013 GNOME-DISKS(1)