blkdiscard /dev/sda
This will send TRIM commands to the whole surface of the drive. The drive's controller will afterwards start reporting zeroes for everything. In the background it will start wiping the actual memory cells of the drive. You are relying on the controller doing its job correctly for this to be safe.
This only took 2 seconds on a 480 gig SSD? Running live media.
I could not understand how to use Bleachbit from Live Media to zero the /dev/sda.
This command failed
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root@mx1:/home/demo/Desktop# dd if=/zev/zero of=/dev/sda
dd: failed to open '/zev/zero': No such file or directory
Seems drive is frozen - Reason for cleaning this drive It does not work half the time. Can not be seen or mounted, and will not boot after a good install. Want to return without my information to secure a replacement drive.
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root@mx1:/home/demo/Desktop# hdparm -I /dev/sda
/dev/sda:
ATA device, with non-removable media
Model Number: Patriot Burst
Serial Number: 55A80796067F00272588
Firmware Revision: SBFM61.3
Transport: Serial, ATA8-AST, SATA 1.0a, SATA II Extensions, SATA Rev 2.5, SATA Rev 2.6, SATA Rev 3.0
Standards:
Supported: 11 10 9 8 7 6 5
Likely used: 11
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: 937703088
Logical Sector size: 512 bytes
Physical Sector size: 512 bytes
Logical Sector-0 offset: 0 bytes
device size with M = 1024*1024: 457862 MBytes
device size with M = 1000*1000: 480103 MBytes (480 GB)
cache/buffer size = unknown
Form Factor: 2.5 inch
Nominal Media Rotation Rate: Solid State Device
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
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
* NOP cmd
* DOWNLOAD_MICROCODE
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
* WRITE_{DMA|MULTIPLE}_FUA_EXT
* 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
* READ_LOG_DMA_EXT equivalent to READ_LOG_EXT
* DMA Setup Auto-Activate optimization
* Device-initiated interface power management
* Software settings preservation
* DOWNLOAD MICROCODE DMA command
* SET MAX SETPASSWORD/UNLOCK DMA commands
* WRITE BUFFER DMA command
* READ BUFFER DMA command
* DEVICE CONFIGURATION SET/IDENTIFY DMA commands
* Data Set Management TRIM supported (limit 8 blocks)
Security:
Master password revision code = 65534
supported
not enabled
not locked
frozen
not expired: security count
supported: enhanced erase
20min for SECURITY ERASE UNIT. 60min for ENHANCED SECURITY ERASE UNIT.
Checksum: correct
root@mx1:/home/demo/Desktop#
