HFS is a software for uploading files. HTTP file server, an HTTP file system specially designed for individual users, can provide you with a more convenient file transmission system if you think it is too troublesome to set up FTP Server. After downloading, you don't need to install it, just decompress it and execute hfs.exe. Right-click the "Virtual File System" pane to add/remove virtual file folders, or directly drag the files to be added to this window to set up a personal HTTP virtual file server.
HFS Hierarchical File System (HFS) is a file system developed by apple computer and used on Mac OS. Originally designed for floppy disks and hard disks, it can also be seen on read-only media such as CD-ROM. Basic introduction Chinese name: HFS category: software features for uploading files: designed for individual users. Developer: Apple history, structure, System, system concept, system history, system structure, Merida frame, version difference, what is TFS, historical HFS first appeared on September 17th, 1985 as a new file system on Macintosh computer. It replaces the Macintosh File System(MFS), a flat file system used only in early Mac models. Because the data generated by Macintosh computer is more than that allowed by other common file systems, such as FAT used by DOS or the original Unix file system. Apple has developed a new and more applicable file system instead of adopting the existing specifications. For example, HFS allows file names to be up to 31 characters long, and supports metadata and double-branch (data and resource branches of each file are stored separately) files. Although HFS, like most other file systems, is regarded as a proprietary format, only it provides a good general solution for most of the latest operating systems to access HFS format disks. In 1998, Apple released HFS Plus, which improved the inefficiency of HFS in addressing disk space and added other improvements. The current version of Mac OS still supports HFS, but starting from Mac OS X, HFS volume can't be used as boot. The hierarchical file system divides a volume into many 512-byte "logical blocks". These logical blocks are grouped into "allocation blocks", which can contain one or more logical blocks according to the size of the volume. HFS uses 16-bit values for address allocation blocks, and the maximum number of allocation blocks is 65536. The following five structures are needed to form an HFS volume: (1) Logical blocks and 1 of the volume are startup blocks, which contain system startup information. For example, the system name and shell (usually Finder) files loaded at startup. (2). Logical block 2 contains a Master Directory Block (MDB). (3) Logic block 3 is the startup block of Volume Bitmap, which tracks the usage status of allocation block. (4). A Catalog File is a B*-tree that contains records of all files and directories stored in a volume. (5). The extension overflow file is a B*-tree that contains the corresponding information of the allocation block of the additional extension record after three extensions in the initial total directory file are occupied. Directory files, in which files and directory records are stored in a single data structure, will cause performance problems when the system allows multitasking, because only one program can write the structure at a time, which means that many programs can wait in the queue due to a program "hogging" system. [2] This is also a serious reliability problem, because hurting this file can destroy the entire file system. On the contrary, the stored files and directories are recorded in a separate structure (such as DOS FAT file system or UNIX file system), in which having a structure distributed on the disk means that destroying a single directory is usually non-fatal and data of other file systems may be reconstructed, and data kept in the non-damaged part. In addition, the limitation of 65,535 allocation blocks leads to a "minimum" file with the size equivalent to 1/ 65,535 disk. Therefore, any given volume, regardless of its size, can only store up to 65,535 files. In addition, any file will be allocated more space than actually needed, with the largest allocated block size. When the disk is too small, it doesn't matter, because the personal allocation block size is negligible, but if the disk starts to approach the 1 GB mark, the minimum amount of space that any file can occupy (a single allocation block) becomes too large, wasting a significant amount of disk space. For example, on a 1 GB disk, the allocation block size under HFS is 16KB, so even a 1-byte file will occupy 16KB of disk space. This situation is less used by users with large files (such as pictures, databases or audio) because these large files waste less space as a percentage of their file size. With many users of small files, on the other hand, they may lose a lot of space due to the large allocation block size. This makes partitioning the disk into smaller logical volumes very attractive to Mac users, because storing files in a smaller volume will take up less space than if they live in a large partition. The same problem also exists in FAT16 file system. System Hybrid File System is a CD-ROM file system used by Apple's MAC, and does not support other operating systems such as DOS and Windows 9x/NT. System Concept Hierarchical File System (HFS) is a file system developed by Apple computer and used on Mac OS. Originally designed for floppy disks and hard disks, it can also be seen on read-only media such as CD-ROM. System History HFS first appeared on September 17th, 1985 as a new file system on Macintosh computers. It replaces the Macintosh File System(MFS), a flat file system used only in early Mac models. Because the data generated by Macintosh computer is more than that allowed by other common file systems, such as FAT used by DOS or the original Unix file system. Apple has developed a new and more applicable file system instead of adopting the existing specifications. For example, HFS allows file names to be up to 31 characters long, and supports metadata and double-branch (data and resource branches of each file are stored separately) files. Although HFS, like most other file systems, is regarded as a proprietary format, only it provides a good general solution for most of the latest operating systems to access HFS format disks. In 1998, Apple released HFS Plus, which improved the inefficiency of HFS in addressing disk space and added other improvements. The current version of Mac OS still supports HFS, but starting from Mac OS X, HFS volume can't be used as boot. The system constitutes a hierarchical file system that divides a volume into many 512-byte "logical blocks". These logical blocks are grouped into "allocation blocks", which can contain one or more logical blocks according to the size of the volume. HFS uses 16-bit values for address allocation blocks, and the maximum number of allocation blocks is 65536. The following five structures are needed to form an HFS volume: 1. Logical blocks and 1 of the volume are startup blocks, which contain system startup information. For example, the system name and shell (usually Finder) files loaded at startup. 2. Logical block 2 contains a Master Directory Block (MDB). 3. The logical block 3 is the startup block of the Volume Bitmap, which tracks the usage status of the allocation block. 4. A Catalog File is a B*-tree that contains records of all files and directories stored in a volume. 5. The extension overflow file is a B*-tree that contains the corresponding information of the allocation block of the additional extension record after three extensions in the initial general directory file are occupied. Phreak Data Recovery Center provides Merida frame HFS frame, which is truly technical and unique and can really compete with other brands. HFS is the abbreviation of Hydraulic Forming System, that is, using the special hydraulic forming technology of Hydraulic Forming System, Merida carved beautiful 3D lines on the aluminum alloy frame tube of 666 prolite, which reduced the frame to an incredible degree, but at the same time kept Merida's consistent characteristic: ultra-high rigid strength. The so-called hydroforming technology of pipe fittings is suitable for pipes with different thickness and special-shaped hollow structure. As the name implies, the pipe is first placed in a shaped mold, and high-pressure fluid (mainly water in 213) is added into the pipe fittings, and axial pressure is applied to compensate the pipe materials, and the pipe materials are pressed into the mold cavity for forming. Using this technology, the tube wall of HFS frame can be made thinner, thus reducing weight and improving strength. However, due to the expensive equipment and high rejection rate, the cost of HFS frame remains high. The 21 ultra-light HFS hydroformed tube frame adopts the highest manufacturing technology of Merida aluminum alloy frame, and all the frames are made of high-strength lightweight hydraulic tubes. The welded joint between the upper tube and the head tube is made of MERIDA LOGO with hydraulic relief design. The upper and lower tubes in the front triangle are butterfly-shaped hydraulic tubes exclusively patented by Merida, and the rear triangle is also made of lightweight tubes. With the latest Merida seat pipe clamp, FSA has a built-in Palin Bowl set. First of all, HFS is divided into two continental versions and European versions. Mainland edition refers to HFS produced and sold by Merida (China) Co., Ltd. in mainland China, which is specially developed and designed for the characteristics of China riders. There are roughly HFS1D, HFS2D and HFS3D in the European version. As for HFS1, HFS2 and HFS3, the numbers behind them are only * * * different. If a V indicates that both disc brakes and V brakes can be used, a D indicates that only disc brakes can be used. The mainland version of HFS weighs 16XX grams (16 inches); The European version is 14XX grams (16 inches). What is TFS? Secondly, both HFS and TFS only refer to a technology and a frame manufacturing process. HFS stands for hydroforming technology, and TFS stands for imitation hydroforming technology. It is not difficult to see that TFS can be said to be a simplified version of HFS, and Merida generally uses FLEXSTAY technology on its own high-end frame, a technology to flatten the rear lower fork to enhance the rigidity of the rear fork when cornering rapidly.