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发表于 2004-2-3 09:44:10
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DOS primary partitions are limited to a maximum of four. DOS
extended partitions, a method for allowing additional partitions, can
number higher, and allow one to design a system with more than four
partitions, however, these extended DOS partitions are not bootable.
FreeBSD on x86 systems suffers from the same limitation of four
primary partitions; however, in FreeBSD parlance, the 'parimary
partitions' are the 'slices' 1 - 4; in addition, in FreeBSD parlance, the
*working* equivalent of DOS 'extended partitions' are called 'partitions.'
That is, FreeBSD 'partitions' in FreeBSD perform the same task as DOS
'extended partitions' in DOS. This difference in terminology often
confuses newcomers to FreeBSD. To further confuse newcomers, DOS extended
partitions, as well as primary partitions, are recognized as slices under
FreeBSD. Although, FreeBSD is limited to 4 bootable FreeBSD slices, it can
mount more than four slices, be they FreeBSD slices, or slices
corresponding to other OS partitioning schemes. In this manner, FreeBSD is
far more flexible. |
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