path to find the command, and then recorded in the hash, when the execution of the hash to take, which will speed up the execution speed. And the hash doesn't hold internal commands.[[emailprotected] ~]# hash -r[[emailprotected] ~]# dateSat Jul 14 00:23:49 CST 2018[[emailprotected] ~]# hashhits command 1 Clears all caches in the hash, executes date, still reads from cache to date, but date has been moved to another location and cannot be exec
the use of lines to interfere with the smaller serial lines between the signal transmission, so compared to the original parallel bus, Sata's working frequency greatly improved. Although the bus bit width is small, the SATA 1.0 standard can still reach 150mb/s, the future SATA 2.0/3.0 can be increased to 300 to 600mb/s. And S-ata has a more concise and convenient layout wiring, in the limited chassis, more conducive to cooling, and simple connection, so that the
to promote their own professional software, it can repair the Physical Bad Sectors of the hard disk and does not affect the hard disk capacity, resulting in a daily price of more than 10 thousand yuan. Especially when Russia's PC-3000 entered China, this information was even more eye-catching.
[Note: PC-3000 is a commercial professional hard disk repair integrat
SAS hard Drive, is a serial connection to the next generation of SCSI technology, the use of serial technology to achieve higher transmission speed, and by shortening the connection line to improve the internal space. SAS is a parallel SCSI interface that develops a new interface. Improves storage system performance, availability, and scalability, and provides co
This is my three articles on how to use SATA hard disk settings published in the PC newspaper. I saw some people in the report saying that they had sorted the articles and posted them on the forum for convenience, so they sent them here. Hope you can help your friends who encounter problems.
Q A on SATA hard drive (PC Report: 04-33) bigh
As the prices of SATA
technology matures, more and more motherboards and hard disks are starting to support SATA (Serial ATA), and SATA interfaces are gradually replacing the traditional pata (parallel ATA) trend. What is the difference between SATA and PATA in transmission mode, and what are the advantages of SATA relative to Pata? This i
the screen:
DATA Error reading drive C:
Abort, Retry, Ignore?
"Analysis processing" causes this failure, one is the disk body wear or improper use of hard disk, resulting in the loss of internal hard disk information, the second is the disk repeatedly read and write, file connection confusion, the allocation of too
capacity.
The internal parts of the mechanical hard disk are more complex than the solid-state hard disk, there are no motors and fans inside the solid-state hard disk, so in this aspect the solid-state drive will have a great advantage over the me
A certain day of the month, is a friend to start a new SATA hard drive that day, I am alone in the computer city outside the platoon irresolute, met this gentleman, came to ask me: "Sir has for my new hard drive and the old hard drive
that the port for the second parallel IDE interface on the motherboard is not available.
Secondary p-ata+s-ata: Contrary to the above, the corresponding port on the first parallel IDE interface (Primary p-ata) on the motherboard is not available because the SATA hard drive is occupied.
P-ata Ports only: Shields the serial SATA Hard
compatible with the PATA device by using a multi-purpose chipset or serial-parallel converter. Because SATA and PATA can use the same drive, you do not need to upgrade the operating system or perform other changes.
5. You do not need to set the jumper of the Master/Slave disk for Sata. The BIOS will number it in the order of 1, 2, and 3. This depends on the SA
menu under main. Under the onboard ide operate mode, you can select two ide operation modes: compatible mode and enhanced mode (compatible mode and enhanced mode ). The compatibility mode is compatible mode, which can be understood as ing the SATA hard disk port to the corresponding port of the parallel port ide channel. When you select this mode, there are three options in the following ide port settings: Primary P-ATA + S-ATA: Parallel IDE
would invest $4.3 billion in cash plus stock to acquire a Hitachi wholly owned subsidiary, Hitachi Global Storage Technology (HGST), a world-class hard drive manufacturer.
Hard Disk Interface
Ata
Full name Advanced Technology attachment, is the traditional 40-pin with the port data cable to connect the motherboard and har
disk is mainly used in middle and high-end servers, high-end workstations and storage devices.
The SCSI interface is currently used with 68-pin and 80-pin interface specifications.
The SCSI interface is a parallel transport interface.
To emphasize, SCSI this kind of hard disk basically already eliminated, use very few similar to SATA replace Pata, SCSI also must be replaced by its upgrade product SAS (seri
, using the general use of the mobile hard disk box, it is best not to plug in the long-term work on the computer, mobile hard disk is used to temporarily exchange or store data, not a local hard disk. It is always possible to work in harsh environments compared to internal hard
program is unable to start the hard drive
As we all know, the hard drive has a primary boot area, where the master bootstrapper is present, and if the main bootstrapper has a problem, then the system cannot be booted from the hard driv
The theoretical data for SATA2.0 and SATA3.0 hard drives are quite different, however, the actual use of the platform itself and the control of the system, as well as different applications to determine the actual use of the results, and through some network of actual test data collected to show SATA2.0 and SATA3.0 hard drive speed difference is not very clear Ex
The solution to the hard drive after computer boot:
Just bought the computer boot ready to the hard disk partition install the operating system, but at this time, the problem arises, the machine to start self-test after the prompt can not find the hard disk
In the beginning, I think it is the motherboard bios in the
temperature, the difference is also possible. Generally speaking, the motherboard, hard disk temperature is lower than the CPU, the motherboard is generally 40-60 degrees between the temperature is acceptable, hard disk temperature, the normal IDE or SATA hard disk temperature should be below 55 degrees is normal.
What happens when the
PATA is called parallel ATA hard drive, with a four-core power cord and a 80-core data line connected to the motherboard, which transmits data in parallel and in a column (string) transmission. Due to the restriction of parallel transmission, transmission rate is low, PATA hard
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