unformat external hard drive

of the active partition. If the program is damaged, it cannot be booted from the hard disk, but the hard disk can be read and written after being started from the soft drive or optical drive. The solution to this fault is relatively simple. It is most convenient to use the FDISK of the higher DOS version. When the FDI

===========================2. before using the optical drive (1), mount: # mount/dev/cdrom/mnt/cdrom, then you can read the content of the CD in the/mnt/cdrom directory. (2) when you want to exit the CD, you must use the umout command, otherwise, the optical drive remains deadlocked: # umount/mnt/cdrom. Tip: mount: block device/dev/cdrom is write-protected, mounting read-only indicates that the optical

1, the system does not recognize the hard drive This type of failure is more common, that is, from the hard disk can not start, starting from a disk can not enter the C disk, the use of the CMOS automatic monitoring function can not find the existence of the hard disk. Most of this fault occurs in the connection cable

command to overwrite the DOS Boot Record. Maybe you will think that the data on drive C will be lost after formatting. In fact, you don't have to worry about it. The data is still stored on the hard disk, after the drive C is formatted, unformat in nu8.0 can be restored. If you have used the mirror in the doscommand o

One, what is the hard drive extraction box Now in the market, we can see that there is a hard drive cartridge on sale, the extraction box is divided into built-in and external 2 kinds. The built-in hard disk box is similar to a dr

directly to the factory settings, not yet, check your motherboard. The computer's USB interface itself is not a high-speed interface, while the mobile hard disk is a high-speed hard drive, so even if the power is normal can not show the mobile hard disk area, the computer's USB interface, the general computer will ha

and cannot boot A hard disk is an external storage device for magnetic media, on each side of the platter, a plurality of concentric circles with the axis of rotation and a certain magnetic density are divided into tracks (Track), each of which is divided into several sectors (sector), and the data is stored on the hard disk by sector. (1) What is the main boo

: 1. The CMOS parameters are not set to open for a friend who has never used a USB add-in, it is possible that the system cannot detect a USB hard drive even if the driver is properly installed, mainly because the default CMOS port on the motherboard is turned off. If it is not set to open, Windows naturally cannot detect the removable hard

The computer does not show how to move the hard drive: Under normal circumstances, a removable hard disk is connected to a host and the system can recognize it as a removable storage device and automatically add a letter to my computer. If the system will recognize the mobile hard

check this option. You can see the new mobile hard drive letter in the resource manager. Method Two: The USB interface problem of the motherboard Because of the motherboard's USB interface problem caused the mobile hard disk can not be used normally, mainly from the following aspects to solve: 1.USB Interface not open: on some old machines (includ

Computer does not recognize the solution of mobile hard disk: Method One: System-related Setup problems 1, do not think that as long as the motherboard has a USB interface can use the mobile hard disk, but also depends on whether the system support. Windows2000, Windows XP and the above version of the system can directly support the mobile hard

Jump out of hard drive misunderstandingSeveral common sense questions that have been misleading Gao Peng for many years are:1. Hard Disk logical bad sectors can be repaired, but physical bad sectors cannot be repaired. The actual situation is that bad channels are not divided into logical and physical bad channels. I don't know who invented these two concepts. Th

are not recognized can also be repaired, but it is difficult to partition when the 0 channels are bad.This is misleading. For example, if you have not collected and studied foreign-language materials for a long time, you cannot say that you have used them as your creed for a long time. There are many professional hard drive repair forums in foreign countries, where you can find that

at the interface, to see whether the data line interface is blue, if it is blue for the USB3.0 interface. 3, look at the pins, under normal circumstances USB2.0 is a row of 4 pins, USB3.0 is the front 5 pins, 4 pins in the back row. 4, see Speed, General USB2.0 of the actual transmission speed of mb-40mb/s, and USB3.0 transmission speed can reach 60mb-140mb/s, you need to pay attention to the premise of your computer motherboard support USB3.0. Third, data transmission rate (data Transfer Ra

the spring force and quickly return to the docking frame when an accidental power loss occurs. So to keep the head of the drive in the disk radius, the drive motor (seek motor) of the head arm will continue to pass current. And let the head arm in the hard disk idle for a few minutes immediately after the unloading action, return to the docking rack, both to hel

Label:The failure condition of the hard disk can be divided into the following categories: 1. Control circuit failure Most of the external circuit of the problem is the power chip or spindle drive chip caused by the burn, due to hard disk circuit board quality problems, design defects, mains fluctuations, sudden power

computer does not recognize the mobile hard drive what to do Under normal circumstances, a removable hard disk is connected to a host and the system can recognize it as a removable storage device and automatically add a letter to my computer. If the system will recognize the mobile hard

corresponding drive letter flag in the explorer, this is caused by improper system setup. 　　Second, the motherboard USB interface problem Due to a problem with the USB interface of the motherboard, the mobile hard drive does not work, mainly from the following aspects to solve: 1, USB interface is not open: on some old machines (including some brands) althoug

What are the computer hardware maintenance skills? In short, the function of computer hardware is to input and store programs and data, and to process data into available forms. From the outward appearance, the microcomputer is composed of the host box and the external equipment. The devices in the host enclosure are connected to the host through an interface and a connecting line. Then, the computer hard

function? Why read multiple times, can read different information. -This is because the device register itself is the interface of the FIFO queue and is a non-prefetch type.Where the INSW instruction is used as follows:INS M8, DXInput bytes into ES: (E) DI specified memory location from DX specified I/O portINS M16, DXInput the word into ES: (E) DI specified memory location from DX specified I/O portINS M32, DXDouble-word input ES: (E) DI specified memory location from DX specified I/O portINSB