NET Files? Features of ASP. NET Data Types in. NET Framework? How to implement Security in ASP. Difference between ADO. Windows File System. The adoption of the smallest cluster makes Information preservation more efficient in the FAT system. If that doesn't work, your next option is to stick in another disk preferably some IDE disk and install Windows to that.
Then, you can hopefully try and repair the corrupt disk from within Windows with the normal Windows utilities or some other utility. When you are done you can remove the temporary disk and change the boot disk back to the once corrupted disk. Previous Post. Next Post. I can't tell you how much I appreciate the information in this article.
I was ready to give up the array after many frustrating hours and attempts to get Windows setup and other boot disks to work.
I followed your instructions and was able to save the data on our Exchange server and repair the corruption. The Spare Block is located in logical sector 17 and contains a table of "hot fixes" and the Spare Directory Block. Under HPFS, when a bad sector is detected, the "hot fixes" entry is used to logically point to an existing good sector in place of the bad sector. This technique for handling write errors is known as hot fixing.
Hot fixing is a technique where if an error occurs because of a bad sector, the file system moves the information to a different sector and marks the original sector as bad. For more discussion of the advantages of HPFS, see the following:.
Because of the overhead involved in HPFS, it is not a very efficient choice for a volume of under approximately MB. In addition, with volumes larger than about MB, there will be some performance degradation.
However, unlike FAT or HPFS, there are no "special" objects on the disk and there is no dependence on the underlying hardware, such as byte sectors. To ensure reliability of NTFS, three major areas were addressed: recoverability, removal of fatal single sector failures, and hot fixing. NTFS is a recoverable file system because it keeps track of transactions against the file system.
Under NTFS, a log of transactions against these components is maintained so that CHKDSK need only roll back transactions to the last commit point in order to recover consistency within the file system.
Under FAT or HPFS, if a sector that is the location of one of the file system's special objects fails, then a single sector failure will occur. NTFS avoids this in two ways: first, by not using special objects on the disk and tracking and protecting all objects that are on the disk. One of the major design goals of Windows NT at every level is to provide a platform that can be added to and built upon, and NTFS is no exception. NTFS provides a rich and flexible platform for other file systems to be able to use.
No longer is a data file a single stream of data. Finally, under NTFS, a user can add his or her own user-defined attributes to a file. A hard link is when two different filenames, which can be located in different directories, point to the same data. This was done because Windows NT is a portable operating system and different disk technology is likely to be encountered at some point. Therefore, bytes per sector was viewed as having a large possibility of not always being a good fit for the allocation.
This was accomplished by allowing the cluster to be defined as multiples of the hardware's natural allocation size. For additional advantages of NTFS, see the following:. Currently, there is no file encryption built into NTFS. File and directory names can be up to characters long, including any extensions.
Names preserve case, but are not case-sensitive. NTFS makes no distinction of filenames based on case.
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