2021-07-20 16:14:51 +00:00
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# hfs-boot
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GS/OS Boot block + loader for HFS
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2021-07-20 16:17:03 +00:00
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See [releases](https://github.com/ksherlock/hfs-boot/releases) for a bootable disk image.
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2021-07-20 16:14:51 +00:00
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Limitations:
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* All file data / catalog data needs to be in the first 3 extents (no overflow extent checking)
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2021-10-22 15:46:33 +00:00
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* ~~Boot volume must use 512 byte allocation blocks (ie, max size is 32MB. This limit should be removed at some point)~~
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* ~~The HFS FST caches the volume block count before GS/OS knows what it is. This causes display issues in
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2021-07-20 16:14:51 +00:00
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Finder, etc. This could be fixed by the FST using the volume size information from the Master Directory Block or GS/OS
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2021-10-22 15:46:33 +00:00
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querying the device block count sooner.~~ (current release disk image includes an hfs.fst with a volume size based on the MDB.)
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2021-07-20 16:14:51 +00:00
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More Information:
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* [Inside Macintosh: Files, Chapter 2 - File Manager](https://developer.apple.com/library/archive/documentation/mac/Files/Files-72.html)
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* [Technical Note TN1150 - HFS Plus Volume Format](https://developer.apple.com/library/archive/technotes/tn/tn1150.html)
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