Problem med installation av ubuntu på thinkpad x40

Trädvy Permalänk
Medlem
Plats
Göteborg
Registrerad
Jun 2003

Problem med installation av ubuntu på thinkpad x40

Hej, har en gammal thinkpad x40 som jag har installerat ubuntu på. När jag sedan startar den så står det

GRUB LOADING, please wait....
Error 18

och sen händer det inget mer, har sökt lite på internet och det ska tydligen vara nått med att hårddisken inte är master eller nått sånt. problemet är att jag inte hittar några inställningar i bioset på datorn. det finns en bootmeny där man kan välja från villken enhet man vill boota och om jag väljer hårddisken så händer samma sak igen.

Det är en gammal företagsdator som är pensionerad om det spelar nån roll.

HP 6715s
500gb Extern HDD
Gamertag Jo11e

Trädvy Permalänk
Medlem
Plats
Stockholm
Registrerad
Sep 2005

Re: Problem med installation av ubuntu på thinkpad x40

Första träffen på google när man söker på 'grub error 18':

Citat:

http://wiki.linuxquestions.org/wiki/GRUB
Error 18

Error 18: Selected cylinder exceeds maximum supported by BIOS
This error is returned when a read is attempted at a linear block address beyond the end of the BIOS translated area. This generally happens if your disk is larger than the BIOS can handle (512MB for (E)IDE disks on older machines or larger than 8GB on others.). In more practical terms this means the BIOS is unable to start executing the kernel because the kernel is not located within the block it can access at boot up time.

This can be circumvented by creating a boot partition at the beginning of the disk that is completely within the first 1023 cylinders of the harddrive. This partition will contain the kernel.

The kernel itself does not suffer from the same limitations as the BIOS so after the BIOS has loaded the kernel the kernel will have no problem accessing the whole harddrive. Newer BIOSes will automatically translate the harddrives size in a way that it can be completely contained within the first 1023 cylinders and hence modern computers do not suffer from this problem.
The same error can happen when the BIOS detects a disk in a different way as Linux does. This can happen when changing motherboards or when moving a GRUB-bootable disk from one computer to another. If this happens, just boot with a GRUB floppy, read the C/H/S numbers from the existing partition table and manually edit the BIOS numbers to match. If using a SUSE linux and installing on VM Ware this problem is solved by creating a small partition at the very beginning of the harddisc, and mounting it as /boot.

Eller så kan man ju alltid kolla grub manualen:

Citat:

http://www.gnu.org/software/grub/manual/html_node/Troubleshoo...
18 : Selected cylinder exceeds maximum supported by BIOS
This error is returned when a read is attempted at a linear block address beyond the end of the BIOS translated area. This generally happens if your disk is larger than the BIOS can handle (512MB for (E)IDE disks on older machines or larger than 8GB in general).

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