hdparm-4.5
- ENDIAN tidyup, GETGEO fixes, Makefile fixes, mostly courtesy of Maciej W. Rozycki
hdparm-4.4
- add -b option, courtesy of Tim Hockin
hdparm-4.3
- display most fields as unsigned rather than signed values
hdparm-4.2
- completely new format/implementation of "-I" with much more detail
- code cleanups for newer libs/compilers
hdparm-4.1
- merge some changes from Andre
- code cleanups from Neil Macvicar and others
- improved output from -i for newer features
- incorporate RedHat-7.0 patches
hdparm-4.0
- no such release
hdparm-3.9
- added IDE_MAJOR[6-9]
- nuked the LBAsects display (again!)
hdparm-3.8
- fix display of drive capacity (Stephane Eranian <eranian@cello.hpl.hp.com>)
- new -E "set cdrom speed" option (Matthias Oster <Matthias.Oster@eikon.tum.de>)
- new -R and -U "(un)register hwif" options (Christian Lademann <cal@zls.de>)
- new contrib subdirectory with contributed scripts from users.
- support for display of newer PIO and DMA/UDMA modes
hdparm-3.7
- use O_NONBLOCK for open(), to handle drives with media removed
- make "HDIO_DRIVE_CMD failed" messages slightly more verbose
- get rid of "HDIO_GET_MULTCOUNT failed" from -i on non-disks
hdparm-3.6
- added new -V (version) option
- removed confusing LBA "remapping" geometry calculation
- small fix to "-I"
- Courtesy of Andrzej Krzysztofowicz <ankry@green.mif.pg.gda.pl>:
- added support for old XT drives
- transfer display in kB/s rather than in MB/s for slow disks
- fixed -v for SCSI disks
- added -L to lock/unlock door of removeable harddisks
- added udma modes 3,4,5..
- updated Makefile to use "destdir" prefix -- Ytiddo <ytiddo@dicksonstreet.com>
hdparm-3.5
- fixed compilation under older kernels
- fixed udma mode info under older kernels
hdparm-3.4
- added udma mode info
- added support for SCSI_DISK_MAJOR{0-7}
- fix -h (help) to show -y instead of -Y for "standby"
- fix display of drive SerialNo: 20 chars instead of just 8
- modify -C -y -Y to each try both possible command codes
- add interpretations for use of -X to set UltraDMA modes
- add -D for enable/disable drive defect-mgmt
hdparm-3.3
- add -C, -y, and -Y flags for IDE power management
hdparm-3.2
- force BLKFLSBUF after -T or -t  -- kmg@barco.com
- fix minor -T/-t mixup in manpage -- hankedr@mail.auburn.edu
hdparm-3.1
- permit "-p" with values larger than 5 (for cmd640 readahead)
- updated version number on manpage (was way out of date!)
hdparm-3.0
- always touch each sector in read_big_block() -- Jon Burgess
- move cache timings to new -T option -- piercarl@sabi.demon.co.uk
hdparm-2.9:
- updated author's email address
hdparm-2.8:
- fixed compilation against older kernels
- changed "KB" to "kB"
- support for "-t" on "md" devices (from boris@xtalk.msk.su)
- removed "Estimating raw driver speed" message from "-t"
  because it is likely very incorrect on faster systems
- added "-I" to re-issue IDENTIFY command to drive
hdparm-2.7:
- fixed .lsm file
- fixed "hdparm -c" (broken in 2.6) (kudos to clive@epos.demon.co.uk)
hdparm-2.6:
- tidied up manpage
- added support for HDIO_SET_PIO_MODE (kernel 1.3.61+)
- reduced codesize by combining fprintf's in help
hdparm-2.5:
- fixed -i display of eight character fwrev field
- rearranged output of -v
hdparm-2.4:
- added flag to turn on/off "using_dma" flag (kernel 1.3.22+)
- added warnings about CMD-640B and RZ1000 bugs to manpage ("-u1")
- cleaned up output from -c, added text interpretations
- added -c functionality to -v
- removed -a functionality from -v for scsi drives
- added -n flag for ignoring the "write error" bit from a drive
- moved binary from /usr/local/bin to /usr/local/sbin
- added support for 3rd/4th IDE interfaces
hdparm-2.3:
- added -c flag for controlling 32-bit chipset features with 1.2.9+
- fixed error messages when -t used on SCSI drives
- fixed date on man page to read 1995 rather than 1994 (late change)
hdparm-2.2:
- fixed a memory problem in my PC, and now BLKFLSBUF seems safe again
- fixed "help" line for "-v"
hdparm-2.1:
- fixed formatting of DMA info line
- added "(DANGEROUS)" to -u,-X,-W options in "hdparm -h"
- changed order in which settings are applied:  placed standby last
hdparm-2.0:
- added this file to the distribution
- added -f and -q flags to hdparm.c and hdparm.8
- added -N to gcc in makefile
- changed installation paths to /usr/local/* in makefile
- removed meaningless CPU% measures
- removed -s and -x flags
- added new -AKPSWXZ flags using new HDIO_DRIVE_CMD ioctl
- removed BLKFLSBUF ioctl from everywhere except -t
(there may be a kernel bug in the implementation of BLKFLSBUF
 when used on an active (mounted rw) filesystem).
- most features now require (E)IDE driver v2.6 or higher
(ide-2.6.patch.65+.gz)