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bash-4.3# hdparm -B 128 /dev/sda - tohle vypadá velice nadějně, disk se od té chvíle nezastavil, zatím asi tři minuty. Ještě to za nějaký čas potvrdím.

/dev/sda:
setting Advanced Power Management level to 0x80 (128)
APM_level    = 128

bash-4.3# hdparm -y /dev/sda

/dev/sda:
issuing standby command

bash-4.3# hdparm -I /dev/sda

/dev/sda:

ATA device, with non-removable media
Model Number:       WDC WD5000LPLX-08ZNTT0                  
Serial Number:      WD-WX41A97EHLV3
Firmware Revision:  04.01A04
Transport:          Serial, SATA 1.0a, SATA II Extensions, SATA Rev 2.5, SATA Rev 2.6, SATA Rev 3.0
Standards:
Used: unknown (minor revision code 0x001f)
Supported: 9 8 7 6 5
Likely used: 9
Configuration:
Logical        max    current
cylinders    16383    16383
heads        16    16
sectors/track    63    63
--
CHS current addressable sectors:   16514064
LBA    user addressable sectors:  268435455
LBA48  user addressable sectors:  976773168
Logical  Sector size:                   512 bytes
Physical Sector size:                  4096 bytes
Logical Sector-0 offset:                  0 bytes
device size with M = 1024*1024:      476940 MBytes
device size with M = 1000*1000:      500107 MBytes (500 GB)
cache/buffer size  = unknown
Nominal Media Rotation Rate: 7200
Capabilities:
LBA, IORDY(can be disabled)
Queue depth: 32
Standby timer values: spec'd by Standard, no device specific minimum
R/W multiple sector transfer: Max = 16    Current = 16
Advanced power management level: 96
DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 udma5 *udma6
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=120ns  IORDY flow control=120ns
Commands/features:
Enabled    Supported:
*    SMART feature set
Security Mode feature set
*    Power Management feature set
*    Write cache
*    Look-ahead
*    Host Protected Area feature set
*    WRITE_BUFFER command
*    READ_BUFFER command
*    DOWNLOAD_MICROCODE
*    Advanced Power Management feature set
SET_MAX security extension
*    48-bit Address feature set
*    Device Configuration Overlay feature set
*    Mandatory FLUSH_CACHE
*    FLUSH_CACHE_EXT
*    SMART error logging
*    SMART self-test
*    General Purpose Logging feature set
*    64-bit World wide name
*    IDLE_IMMEDIATE with UNLOAD
*    WRITE_UNCORRECTABLE_EXT command
*    {READ,WRITE}_DMA_EXT_GPL commands
*    Segmented DOWNLOAD_MICROCODE
*    Gen1 signaling speed (1.5Gb/s)
*    Gen2 signaling speed (3.0Gb/s)
*    Gen3 signaling speed (6.0Gb/s)
*    Native Command Queueing (NCQ)
*    Phy event counters
*    Idle-Unload when NCQ is active
*    NCQ priority information
*    Device automatic Partial to Slumber transitions
*    READ_LOG_DMA_EXT equivalent to READ_LOG_EXT
*    DMA Setup Auto-Activate optimization
Device-initiated interface power management
*    Software settings preservation
*    SMART Command Transport (SCT) feature set
*    SCT Write Same (AC2)
*    SCT Features Control (AC4)
*    SCT Data Tables (AC5)
unknown 206[12] (vendor specific)
unknown 206[13] (vendor specific)
*    DOWNLOAD MICROCODE DMA command
*    WRITE BUFFER DMA command
*    READ BUFFER DMA command
Security:
Master password revision code = 65534
supported
not    enabled
not    locked
not    frozen
not    expired: security count
supported: enhanced erase
70min for SECURITY ERASE UNIT. 70min for ENHANCED SECURITY ERASE UNIT.
Logical Unit WWN Device Identifier: 50014ee65d50df58
NAA        : 5
IEEE OUI    : 0014ee
Unique ID    : 65d50df58
Checksum: correct