November 2005
Beginner to intermediate
528 pages
24h 11m
English
Content preview from Mac OS X Tiger in a NutshellBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Mac OS X Filesystems
Like earlier versions of Mac OS, Mac OS X filesystems favor the Mac OS Extended Format , better known as HFS+ (Hierarchical File System),[*] but they also work well with the Universal File System (UFS ) that most other Unix-based operating systems use as their primary filesystem.
Most Mac OS X volumes use HFS+ as their format for two reasons. First, until Mac OS X 10.3, HFS+ has performed much better than UFS (though UFS performance in Tiger has improved greatly, close to matching that of HFS+). The other reason is that HFS+ natively supports multiple file forks (see the later section "File Forks“.) Still, through strong UFS support, a Mac OS X machine can work seamlessly with other Unix volumes, such as network-mounted ones that may be accessible over NFS.
[*] Mac OS 8.1 and later used HFS+, while versions prior to 8.1 used the older Mac OS Standard Format, known as just HFS (without the plus).
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