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What is the .HA File Extension?


.HA File Extension Description:

The file extension .ha is used by the compression tool HA Compressed Archive, that contains either a single file or a file group compressed with the HA algorithm. The .ha file extension executes an improved PPMC code that is classified under the fourth order of the Markov modeling, which also forms the foundation for the coder that performs relatively better than other applications in its category. The file extension .ha uses a slower, but extremely more effective compression and decompression method, allowing for a more efficient archive file.

The .ha file extension was designed to provide maximum file compression without irrelevant add-in features that only tend to bloat a program, which is the reason for the very small packaging of the archiving application. The file extension .ha must not be confused with the HAP format, which is developed by another group because they are not related, although they are both concerned with file compression tasks. The file extension .ha maintains a count of how many files are included in the archive with succeeding archives consisting of sequential headers, following the compressed data as what is commonly seen in archives.

The structure of the header of the main .ha file extension and the succeeding archives if any contain an OFFSET, Count TYPE and Description Fields is as follows: an OFFSET can have a value of 0000h, the Count TYPE would be equal to 2 char and the Description field will contain the value ID=HA. The subsequent archives of the file extension .ha will contain a slightly different set of values compared to the main header with the character 255 (0FFh), serving as pathnames separator.

The version as well as the compression type fields of the high nybble of the file extension .ha, represents the version information of the application, while the compression type is reflected in the low nybble. An example of the compression types stored in the file extension .ha would be CPY (no compression), ASC (default method), HSC (finite context), DIR (directory based), and SPECIAL (using 0.99B). Machine types relative to the operating system installed is also stored in the file extension .ha in 1-byte format with MS DOS, represented by 1 and Linux (UNIX) OS for 2.

Author: Harry Hirvola
Author URL: http://ftp://sunsite.unc.edu/pub/Linux/utils/compress
Related Applications: HA Archiver
Common Path: User Defined

Recommendation:

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Do you have errors with .HA files?

The Reason for .HA files Errors:

When receiving errors with .HA files you are in all likelihood having a severe Windows registry error - the error could be the effect of corruption to your registry and you should work to correct it at once to avoid further corruption to the file system. Dangers include device failure, blue screen errors and fatal operating system crashes.

Symptoms of .HA files Errors:

.HA files errors produce numerous symptoms, including: pc locks on shut down or start up, programs lock up, decreased pc performance, internal speaker beeps, trouble saving files, sluggish behaviour and failure while installing software.

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What is the .HA File Extension?    |    Scan for .HA File Extension Errors    |    Repair .HA File Errors