How to view hard disk models and hard disk serial numbers in linux hdparm-I/dev/hda display hard disk settings [root @ cnscn ~] # Hdparm/dev/sda: IO_support = 0 (default 16-bit) readonly = 0 (off) readahead = 256 (on) geometry = 19929 [number of cylinders]/255 [number of magnetic heads]/63 [number of sectors], sectors = 320173056 [total number of sectors], start = 0 [number of starting sectors]. display the number of hard disk cylinders, heads, and sectors [root @ cnscn ~] # Hdparm-g/dev/sda: geometry = 19929 [number of cylinders]/255 [number of magnetic heads]/63 [number of sectors], sectors = 320173056 [total number of Slice], start = 0 [number of starting slice]. evaluate the Read efficiency of a hard disk [root @ cnscn ~] # Hdparm-t/dev/sda: Timing buffered disk reads: 166 MB in 3.03 seconds = 54.85 MB/sec [root @ cnscn ~] # Hdparm-t/dev/sda: www.2cto.com Timing buffered disk reads: 160 MB in 3.01 seconds = 53.11 MB/sec [root @ cnscn ~] # Hdparm-t/dev/sda: Timing buffered disk reads: 166 MB in 3.00 seconds = 55.31 MB/sec. evaluate the Read efficiency of the hard disk cache [root @ cnscn ~] # Hdparm-T/dev/sda: Timing cached reads: 3784 MB in 2.00 seconds = 1894.60 MB/sec [root @ cnscn ~] # Hdparm-T/dev/sda: Timing cached reads: 3816 MB in 2.00 seconds = 1909.06 MB/sec [root @ cnscn ~] # Hdparm-T/dev/sda: Timing cached reads: 3728 MB in 2.00 seconds = 1866.29 MB/sec. check the power management mode of the IDE Hard Disk [root @ cnscn ~] # Hdparm-C/dev/sda: drive state is: standby [power-saving mode]. display the specified hardware specifications of the IDE Hard Disk [root @ cnscn ~] # Hdparm-I/dev/sda. Check the hardware specification of the hard disk directly [root @ cnscn ~] # Hdparm-I/dev/sda: ATA device, with non-removable mediaModel Number: Maxtor 6B160M0Serial Number: B404PTJHFirmware Revision: BANC1BM0Standards: Supported: 7 6 5 4 Likely used: 7 Configuration: Logical max currentcylinders 16383 16383 heads 16 16 sectors/track 63 63-www.2cto.com
CHS current addressable sectors: 16514064LBA user addressable sectors: 268435455LBA48 user addressable sectors: 320173056 device size with M = 1024*1024: 156334 MBytesdevice size with M = 1000*1000: 163928 MBytes (163 GB) Capabilities: LBA, IORDY (can be disabled) Queue depth: 32
Standby timer values: spec 'd by Standard, no device specific minimumR/W multiple sector transfer: Max = 16 Current = 16 Advanced power management level: unknown setting (0 × 0000) export acoustic management value: 192, current value: 254DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 udma5 * runtime time: min = 120ns runtime = 120 nsPIO: pio0 pio1 pio2 pio3 runtime time: no flow control = 120ns IORDY flow control = 120 nsCommands/features: Enabled Supported: * NOP cmd * read buffer cmd * write buffer cmd * Host Protected Area feature set * Look-ahead * Write cache
* Power Management feature setSecurity Mode feature set * SMART feature set * flush cache ext command * Mandatory flush cache command * Device Configuration Overlay feature set * 48-bit Address feature set * Automatic Acoustic Management feature setSET MAX security extension www.2cto.com Advanced Power Management feature set * download microcode cmd * General Purpose Logging feature set * SMART self-test * SMART error logging
Security: Master password revision code = 65534 supportednot enablednot lockednot frozennot expired: security countnot supported: enhanced eraseChecksum: correct. detects and sets 32-bit I/O mode detection for the IDE Hard Disk [root @ cnscn ~] # Hdparm-c/dev/sda: IO_support = 0 (default 16-bit) [default 16-bit I/O] Set [root @ cnscn ~] # Hdparm-c 1/dev/sda. Check and set the DMA mode of the IDE Hard Disk [root @ cnscn ~] # Hdparm-d/dev/sda :... Www.2cto.com [root @ cnscn ~] # Hdparm-d 1/dev/sda. Check the number of slice pre-stored in the cache when reading files. [root @ cnscn ~] # Hdparm-a/dev/sda: readahead = 256 (on ). query and set the number of multiple-sector access sectors to improve the disk access efficiency [root @ cnscn ~] # Hdparm-m/dev/sda [root @ cnscn ~] # The hdparm-m parameter value is an integer such as 8/dev/sda. Write the data in the buffer to the hard disk and clear the data in the buffer [root @ cnscn ~] # Hdparm-f/dev/sda