root@vuuno4kse:~# hdparm --help

hdparm - get/set hard disk parameters - version v9.48, by Mark Lord.

Usage:  hdparm  [options] [device ...]

Options:
 -a   Get/set fs readahead
 -A   Get/set the drive look-ahead flag (0/1)
 -b   Get/set bus state (0 == off, 1 == on, 2 == tristate)
 -B   Set Advanced Power Management setting (1-255)
 -c   Get/set IDE 32-bit IO setting
 -C   Check drive power mode status
 -d   Get/set using_dma flag
 -D   Enable/disable drive defect management
 -E   Set cd/dvd drive speed
 -f   Flush buffer cache for device on exit
 -F   Flush drive write cache
 -g   Display drive geometry
 -h   Display terse usage information
 -H   Read temperature from drive (Hitachi only)
 -i   Display drive identification
 -I   Detailed/current information directly from drive
 -J   Get/set Western DIgital "Idle3" timeout for a WDC "Green" drive (DANGEROUS)
 -k   Get/set keep_settings_over_reset flag (0/1)
 -K   Set drive keep_features_over_reset flag (0/1)
 -L   Set drive doorlock (0/1) (removable harddisks only)
 -m   Get/set multiple sector count
 -M   Get/set acoustic management (0-254, 128: quiet, 254: fast)
 -n   Get/set ignore-write-errors flag (0/1)
 -N   Get/set max visible number of sectors (HPA) (VERY DANGEROUS)
 -p   Set PIO mode on IDE interface chipset (0,1,2,3,4,...)
 -P   Set drive prefetch count
 -q   Change next setting quietly
 -Q   Get/set DMA queue_depth (if supported)
 -r   Get/set device readonly flag (DANGEROUS to set)
 -R   Get/set device write-read-verify flag
 -s   Set power-up in standby flag (0/1) (DANGEROUS)
 -S   Set standby (spindown) timeout
 -t   Perform device read timings
 -T   Perform cache read timings
 -u   Get/set unmaskirq flag (0/1)
 -U   Obsolete
 -v   Use defaults; same as -acdgkmur for IDE drives
 -V   Display program version and exit immediately
 -w   Perform device reset (DANGEROUS)
 -W   Get/set drive write-caching flag (0/1)
 -x   Obsolete
 -X   Set IDE xfer mode (DANGEROUS)
 -y   Put drive in standby mode
 -Y   Put drive to sleep
 -z   Re-read partition table
 -Z   Disable Seagate auto-powersaving mode
 --dco-freeze      Freeze/lock current device configuration until next power cycle
 --dco-identify    Read/dump device configuration identify data
 --dco-restore     Reset device configuration back to factory defaults
 --dco-setmax      Use DCO to set maximum addressable sectors
 --direct          Use O_DIRECT to bypass page cache for timings
 --drq-hsm-error   Crash system with a "stuck DRQ" error (VERY DANGEROUS)
 --fallocate       Create a file without writing data to disk
 --fibmap          Show device extents (and fragmentation) for a file
 --fwdownload            Download firmware file to drive (EXTREMELY DANGEROUS)
 --fwdownload-mode3      Download firmware using min-size segments (EXTREMELY DANGEROUS)
 --fwdownload-mode3-max  Download firmware using max-size segments (EXTREMELY DANGEROUS)
 --fwdownload-mode7      Download firmware using a single segment (EXTREMELY DANGEROUS)
 --fwdownload-modee      Download firmware using mode E (min-size segments) (EXTREMELY DANGEROUS)
 --fwdownload-modee-max  Download firmware using mode E (max-size segments) (EXTREMELY DANGEROUS)
 --idle-immediate  Idle drive immediately
 --idle-unload     Idle immediately and unload heads
 --Istdin          Read identify data from stdin as ASCII hex
 --Istdout         Write identify data to stdout as ASCII hex
 --make-bad-sector Deliberately corrupt a sector directly on the media (VERY DANGEROUS)
 --offset          use with -t, to begin timings at given offset (in GiB) from start of drive
 --prefer-ata12    Use 12-byte (instead of 16-byte) SAT commands when possible
 --read-sector     Read and dump (in hex) a sector directly from the media
 --repair-sector   Alias for the --write-sector option (VERY DANGEROUS)
 --security-help   Display help for ATA security commands
 --trim-sector-ranges        Tell SSD firmware to discard unneeded data sectors: lba:count ..
 --trim-sector-ranges-stdin  Same as above, but reads lba:count pairs from stdin
 --verbose         Display extra diagnostics from some commands
 --write-sector    Repair/overwrite a (possibly bad) sector directly on the media (VERY DANGEROUS)

root@vuuno4kse:~#

Usage: sdparm [--all] [--clear=STR] [--command=CMD] [--dbd] [--defaults]
              [--dummy] [--flexible] [--get=STR] [--help] [--hex] [--inquiry]
              [--long] [--num-desc] [--page=PG[,SPG]] [--quiet] [--readonly]
              [--save] [--set=STR] [--six] [--transport=TN] [--vendor=VN]
              [--verbose] [--version] DEVICE [DEVICE...]

       sdparm --enumerate [--all] [--inquiry] [--long] [--page=PG[,SPG]]
              [--transport=TN] [--vendor=VN]
  where:
    --all | -a            list all known fields for given device
    --clear=STR | -c STR    clear (zero) field value(s)
    --command=CMD | -C CMD    perform CMD (e.g. 'eject')
    --dbd | -B            set DBD bit in mode sense cdb
    --defaults | -D       set a mode page to its default values
    --dummy | -d          don't write back modified mode page
    --enumerate | -e      list known pages and fields (ignore device)
    --flexible | -f       compensate for common errors, relax some checks
    --get=STR | -g STR    get (fetch) field value(s)
    --help | -h           print out usage message
    --hex | -H            output in hex rather than name/value pairs
    --inquiry | -i        output INQUIRY VPD page(s) (def: mode page(s))
                          use --page=PG for VPD number (-1 for std inq)
    --long | -l           add description to field output
    --num-desc | -n       report number of mode page descriptors
    --page=PG[,SPG] | -p PG[,SPG]    page (and optionally subpage) number
                          [or abbrev] to output, change or enumerate
    --quiet | -q          suppress device vendor/product/revision string line
    --readonly | -r       force read-only open of DEVICE (def: either
                          read-write or read-only). For ATA disks
    --save | -S           place mode changes in saved page as well
    --set=STR | -s STR    set field value(s)
    --six | -6            use 6 byte SCSI mode cdbs (def: 10 byte)
    --transport=TN | -t TN    transport protocol number [or abbrev]
    --vendor=VN | -M VN    vendor (manufacturer) number [or abbrev]
    --verbose | -v        increase verbosity
    --version | -V        print version string and exit

View or change SCSI mode page fields (e.g. of a disk or CD/DVD drive).
STR can be <acronym>[=val] or <start_byte>:<start_bit>:<num_bits>[=val].
root@vuuno4kse:~#