freebsd has problems with bios

Kamal R. Prasad kamalp at
Wed Oct 12 21:58:15 PDT 2005

I have verified integrity of the hard disk and this problem shows up  
on a new samsung 1604N hard disk too. It is a hard disk independet  

On 13-Oct-05, at 5:49 AM, Peter Clutton wrote:

>> For some reason, the values of hard disk geometry (cylinders/head/
>> sectors( are not accrptable to fdisk and when i agree to using
>> freebsd 's idea of disk geometryt, during sysinstall -I get an  
>> error:-0
>> UDMA_100 error:READWRITE Failure ICRC error.
> Usually fdsisk asks you to check what the bios reports as the CHS  
> and enter that
> manually, using the g option i believe. Have you tried this?
The bios has 4 modes auto, large, lba, chs in which to access the  
hard disk. I ttried all 4 modes and it  doesn't solve the problem.
> However as stated above, and looking at those errors, this may be a
> hardware problem.
The hardware is stable and I expect any hard disk to give the same  
error essentially because the interaction between bios and freebsd is  
the cause of the problem.


Kamal R. Prasad
UNIX systems consultant
kamalp at

More information about the freebsd-questions mailing list