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1430K Free

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#1
[www].se [ftp].se [mirror].us
1430K_free.sit (9.54 KB)
For System 7.0 - 7.6 - Mac OS 9
Emulation
Guides on emulating older applications

"When a floppy disk is initialised, space is pre-allocated by the system for two data structures, the catalog and the extents tree. When Finder sees the Disk, it creates another, the DeskTop file.
In order to speed up things, these three things allocate a lot of contiguous space, just to be sure that it will never be fragmented. In practice, however, that space is never fully used, hence even on a disk with "0 K free" there are still several kbytes free, which can't be used because they're reserved for those uses."

1430K free modifies the sizes of the clump size (catalog size) and extent tree.

"Using it under Mac OS 7 you may create disks which have slightly more than 1430 Kbytes free on a 1440 K disk, that's a percentually small improvement but sometimes it may be useful. Anyway, why should you leave those kbytes totally unused ? MS-DOS users get more than 1430 Kbytes free!
It also allows you to logically format a floppy disk without physically formatting (i.e., performing the last step of disk initialization, "creating directory")."

Compatibility
Architecture: 68k

Comments

xy's picture
by xy - 2010, May 12 - 5:17pm

For those who need this urgently here is download mirror:
http://www.filesearching.com/cgi-bin/s?t=n&q=ftp.ens.fr/pub/mac/hqx/utils

Bolkonskij's picture
by Bolkonskij - 2010, May 12 - 4:07pm
4

Great upload, I've been looking for something like this. Thanks Smile