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6 Cards in this Set
- Front
- Back
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Contiguous File Allocation
(adv & dv) |
Adv:
Easy to implement Easy to read file in entirety Dv: No easy way to expand file Only really works for CD-ROMs |
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Linked List File Allocation
(Adv & Dv) |
Adv: No external fragmentation. Easy to impement.
Dv: Random access difficult. Block size no longer (2^n) |
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FAT
(adv & dv) |
Adv: Random access easier because chain in memory.
Dv: Entire FAT table in memory. |
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inodes
(Adv & Dv) |
Only need to keep inodes for open files in memory.
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Two types of links.
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1)Hard Links
(inode that points to disk blocks) 2)Symbolic Links (create a special file of type LINK which records the path to the desired file) |
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Hard & Soft links (Dv)
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Hard Links
File may still persist even after owner thinks it was deleted because someone else linked to it. Soft Links Aren't prone to this issue but introduce additional overhead. |
