GRUB returns a numerical error message on CPM boot failure. This article provides a short reference of GRUB 0.9 Stage 2 error messages.GRUB returns a numerical error message on CPM boot failure. This article provides a short reference of GRUB 0.9 Stage 2 error messages.
All recent XOS releases (including XOS V10.0) use GRUB 0.91 as the CPM boot loader. The GRUB version 0.9x has been called "GRUB Legacy" since GNU introduced GRUB 2.0.
When troubleshooting CPM disk boot issues, GRUB may report a numerical error message on the CPM console port. The full description of the error should be looked up in the "GRUB Legacy" manual at GNU website (see the URL in the reference section).
The following table lists GRUB 0.9x Stage 2 errors with short description for a quick reference.
| Error | Short description |
|---|---|
| 1 | Filename must be either an absolute filename or blocklist |
| 2 | Bad file or directory type |
| 3 | Bad or corrupt data while decompressing file |
| 4 | Bad or incompatible header in compressed file |
| 5 | Partition table invalid or corrupt |
| 6 | Mismatched or corrupt version of stage1/stage2 |
| 7 | Loading below 1MB is not supported |
| 8 | Kernel must be loaded before booting |
| 9 | Unknown boot failure |
| 10 | Unsupported Multiboot features requested |
| 11 | Unrecognized device string |
| 12 | Invalid device requested |
| 13 | Invalid or unsupported executable format |
| 14 | Filesystem compatibility error, cannot read whole file |
| 15 | File not found |
| 16 | Inconsistent filesystem structure |
| 17 | Cannot mount selected partition |
| 18 | Selected cylinder exceeds maximum supported by BIOS |
| 19 | Linux kernel must be loaded before initrd |
| 20 | Multiboot kernel must be loaded before modules |
| 21 | Selected disk does not exist |
| 22 | No such partition |
| 23 | Error while parsing number |
| 24 | Attempt to access block outside partition |
| 25 | Disk read error |
| 26 | Too many symbolic links |
| 27 | Unrecognized command |
| 28 | Selected item cannot fit into memory |
| 29 | Disk write error |
| 30 | Invalid argument |
| 31 | File is not sector aligned |
| 32 | Must be authenticated |
| 33 | Serial device not configured |
| 34 | No spare sectors on the disk |