Hard disk low formatting (physical formatting) 1. The low-level formatting effect is to divide the blank magnetic sheet one by one with a different circle, a radius, and divide the track into several sectors, each sector having a capacity of 512 bytes. 2. Low-level formatting has been completed by a hard disk manufacturer when the hard disk is shipped, and usually users do not need to perform low-level formatting operations. 3. All kinds of insights on low-level formatting 1) If there is nothing necessary, users do not perform low-level formatting operations on the hard disk, because the initial low formatting before the hard disk is shipped by the dedicated magnetic head on the production line, and the user is exported to the hard disk The subsequent use of software is low-level formatting, using the hard disk itself's read and write head, its read and write performance, read and write accuracy, no dedicated magnets on the production line, so the formatted effect is not as good as the production line The initial low formatted so that the hard disk performance drops. (2) Low-level formatting is the operation of high loss of hard drives, which will greatly shorten the service life of the hard disk, so it is recommended not to perform low formatting if it is not necessary. (3) Low-level formatting is easy to cause injuries on the surface of the magnetic sheet, such as non-necessary, do not lower. (4) However, if the following cases, low-level formatting may be necessary: 1 is affected by external strong magnets, strong magnetic fields, or due to long-term use, the hard disk magnetic distribution sector format magnetic records of low-level formatting Part is lost, therefore there is a large number of "bad sectors". Note that this is not physical damage to the magnetic sheet. At this time, low-level formatting, re-dividing the sector, may be a valid approach. 2 To improve the performance of the hard disk, try to reset the sector "interleave" (interleave) to increase the speed of reading and writing, re-performing low-level formatting is usually used. Of course, there are some software such as the Calibrat (Norton Utilities for DOS 8.0 Chinese version in Norton Utilities for DOS 6.0-8.0) to optimize intervals, improve the hard disk for low-level formatting operations that do not damage data speed.
Low-level formatting is to divide the blank disk out of the cylindrical surface and the track, and then divide the track into several sectors, each sector, and each sector is also divided into the identifier portion ID, the spacer GAP, and the data area DATA. It can be seen that low-level formatting is a work prior to advanced formatting, and low-level formatting can only support a separate partition for a hard disk. Each hard disk is shipped by the hard disk manufacturer, so usually the user does not need to perform low-level formatting operations. Low-level formatting is a lossless operation that has a negative impact on the life of the hard disk. Advanced formatting is marked according to a certain partition format, generating a boot area information, initialization space allocation table, label logical bad track, check data, etc., so that the operating system can read and write the disk, so advanced formatting The method is different due to the different operating system, or due to the difference in partition format. Advanced formatting is just a unusual read and write operation for disk, which has no adverse impact on the hard disk. Quick formatting is a kind of advanced formatting, compared to normal formatting, it saves the verification data ring and assumes that all sectors in the disk can be read and written correctly, and do not maribe the bad sector . It improves the speed of format, but sacrifies reliability. Quickly formatted hard drives, you can use disk check tools to perform surface scan to check data to ensure reliable data access. Format is actually a good than a white paper, which is easy to use this white paper. Only the low-level formatted plaid is large, can not be used directly, and the high-level formatting plaid is a manuscript paper, which can be used directly.
