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发表于 2004-8-3 16:08:05
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man lilo
- BOOT ERRORS
- The boot process takes place in two stages. The first
- stage loader is a single sector, and is loaded by the BIOS
- or by the loader in the MBR. It loads the multi-sector
- second stage loader, but is very space limited. When the
- first stage loader gets control, it types the letter "L";
- when it is ready to transfer control to the second stage
- loader it types the letter "I". If any error occurs, like
- a disk read error, it will put out a hexadecimil error
- code, and then it will re-try the operation. All hex
- error codes are BIOS return values, except for the lilo-
- generated 40, 99 and 9A. A partial list of error codes
- follows:
- 00 no error
- 01 invalid disk command
- 0A bad sector flag
- 0B bad track flag
- 20 controller failure
- 40 seek failure (BIOS)
- 40 cylinder>1023 (LILO)
- 99 invalid second stage index sector (LILO)
- 9A no second stage loader signature (LILO)
- AA drive not ready
- FF sense operation failed
- Error code 40 is generated by the BIOS, or by LILO during
- the conversion of a linear (24-bit) disk address to a geo-
- metric (C:H:S) address. On older systems which do not
- support lba32 (32-bit) addressing, this error may also be
- generated. Errors 99 and 9A usually mean the map file (-m
- or map=) is not readable, likely because LILO was not re-
- run after some system change, or there is a geometry mis-
- match between what LILO used (lilo -v3 to display) and
- what is actually being used by the BIOS (one of the lilo
- diagnostic disks, available in the source distribution,
- may be needed to diagnose this problem).
- When the second stage loader has received control from the
- first stage, it prints the letter "L", and when it has
- initialized itself, including verifying the "Descriptor
- Table" - the list of kernels/others to boot - it will
- print the letter "O", to form the full word "LILO", in
- uppercase.
- All second stage loader error messages are English text,
- and try to pinpoint, more or less successfully, the point
- of failure.
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