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Check4GB
Details
Requires
Amiga
How this works
Amiga Computers with Kickstart 3.1 and below cannot handle hard drives greater than 4GB. Although there are many solutions and even OS3.5+ claim to be compatible with large hard drives, it is sometimes difficult to be sure.
Background
The standard interface between a device driver (e.g. scsi.device) and a file system (e.g. FastFileSystem) addresses blocks on a drive by a 32 bit address. With 32 bits you can address 2^32 bytes = 4GB.
There are three solutions to expand this border:
- TD64 is a 64 bit command set invented by Phase5.
- NSD is a new style to communicate with a device driver. It also adds
64 bit commands similar to TD64.
- Direct-SCSI is a method to send raw device commands directly to the
SCSI bus. Most IDE drivers understand and emulate these commands, too.
To bypass the 4GB border you need a device driver and a file system that both support the same command set out of the above.
File hash table
check4gb.lha | [md5] c96713137613324e0e2f630f742a7195 |
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