High Sierra Format
E459008
High Sierra Format is an early CD-ROM file system standard that served as the basis for the later ISO 9660 (ECMA-119) specification.
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
CD-ROM file system standard
ⓘ
optical disc file system ⓘ |
| basedOn | Yellow Book CD-ROM specification NERFINISHED ⓘ |
| basisFor |
ECMA-119
NERFINISHED
ⓘ
ISO 9660 NERFINISHED ⓘ |
| blockSize | logical block size of 2048 bytes ⓘ |
| characterEncoding | ASCII NERFINISHED ⓘ |
| compatibility |
MS-DOS
NERFINISHED
ⓘ
early Macintosh systems ⓘ early UNIX systems ⓘ |
| dataAccessMode | sequential sectors on optical media ⓘ |
| dataStructure |
directory records
ⓘ
path tables ⓘ volume descriptors ⓘ |
| designedFor | cross-platform interchange of CD-ROM data ⓘ |
| developedFor | CD-ROM media ⓘ |
| directoryDepthLimit | limited directory nesting ⓘ |
| fileNameCharacterSet |
digits 0–9
ⓘ
underscore ⓘ upper-case letters A–Z ⓘ |
| fileNameLengthLimit |
8.3 filename structure
ⓘ
maximum 3 characters for extension ⓘ maximum 8 characters for name ⓘ |
| fileSystemSemantics |
case-insensitive file names
ⓘ
no file ownership metadata ⓘ no file permissions model ⓘ |
| fileSystemType | read-only file system ⓘ |
| goal | vendor-neutral CD-ROM file system ⓘ |
| historicalRole | prototype for standardized CD-ROM file systems ⓘ |
| influenced | interoperability requirements of ISO 9660 ⓘ |
| limitations |
limited directory depth
ⓘ
no support for long file names ⓘ restricted character set for file names ⓘ |
| metadataSupport |
file flags (e.g., directory, hidden)
ⓘ
file size ⓘ recording date and time ⓘ |
| sectorSize | 2048 bytes ⓘ |
| standardizedAs |
ECMA-119 precursor
ⓘ
ISO 9660 precursor ⓘ |
| status | obsolete ⓘ |
| storageMedium | compact disc ⓘ |
| supersededBy |
ECMA-119
NERFINISHED
ⓘ
ISO 9660 NERFINISHED ⓘ |
| supports |
directory hierarchy
ⓘ
file storage on CD-ROM ⓘ |
| usedIn | early CD-ROM titles in the late 1980s ⓘ |
| uses | volume descriptor at fixed logical block ⓘ |
| volumeDescriptorLocation | logical block 16 ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.