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Difference between revisions of "Mac OS 8.1"
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Replaced by [[Mac OS 8.5]]. | Replaced by [[Mac OS 8.5]]. | ||
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+ | ===Before you install Mac OS 8.1=== | ||
+ | Mac OS 8.1 introduces a new hard disk format: Mac OS Extended format. This new method of formatting a hard disk allows for more efficient use of the space on your hard disk. | ||
+ | |||
+ | With the Mac OS Standard format, space is divided into storage blocks that are all the same size. If a file uses only a portion of a block of space, the unused space can’t be used to store another file. This results in wasted space, particularly if you have a large disk and a lot of small files. | ||
+ | |||
+ | With Mac OS Extended format, files use only the amount of space they actually need. If a portion of a storage block is left over, the unused space can be used to store another file. This results in less wasted space, and allows you to store more files on your hard disk. | ||
+ | |||
+ | '''IMPORTANT:''' Mac OS Extended format requires Mac OS 8.1. Files stored on a Mac OS Extended format disk are not accessible by computers with earlier versions of the Mac OS. If you want to use the new format, you must back up all the files on your hard disk, then reinitialize it in extended format before installing Mac OS 8.1. | ||
==See Also== | ==See Also== |
Revision as of 17:16, 3 August 2020
Offers some improvements over Mac OS 8.0 including the introduction of the HFS+ file system. If a volume is formatted with HFS+, it cannot be read by Mac OS earlier than 8.1.
Replaced by Mac OS 8.5.
Before you install Mac OS 8.1
Mac OS 8.1 introduces a new hard disk format: Mac OS Extended format. This new method of formatting a hard disk allows for more efficient use of the space on your hard disk.
With the Mac OS Standard format, space is divided into storage blocks that are all the same size. If a file uses only a portion of a block of space, the unused space can’t be used to store another file. This results in wasted space, particularly if you have a large disk and a lot of small files.
With Mac OS Extended format, files use only the amount of space they actually need. If a portion of a storage block is left over, the unused space can be used to store another file. This results in less wasted space, and allows you to store more files on your hard disk.
IMPORTANT: Mac OS Extended format requires Mac OS 8.1. Files stored on a Mac OS Extended format disk are not accessible by computers with earlier versions of the Mac OS. If you want to use the new format, you must back up all the files on your hard disk, then reinitialize it in extended format before installing Mac OS 8.1.