Install Problems Centos 4.1

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"Don't know whether I understand you correctly, but RAID1 array sync is
started with firstboot after the installation finished."

Err....no it doesn't.... it syncs the array as it installs, do a cntrl-alt-f3 when installing to bring a shell up then do a "watch cat /proc/mdstat"

and you can see it building the array as its installing, do a cntrl-alt-f7 to get back to the graphics screen.....

I did actually find what the problem was and this was it:

The SIS 965 chipset is not supported by the kernel so the IDE interfaces runs S-L-O-W-L-Y  eg 1.7Mb/sec transfer rate to the disk, coupled with the RAID rebuilding in the background makes the install take about 6 hours if it can actually manage to complete, which it usually doesn't on this platform.

The solution: change the motherboard.... so I put a sempron socket A board in its place with a 3200+ CPU and it works fine....

:-)





Alexander Dalloz wrote:

>Am Do, den 21.07.2005 schrieb Peter Farrow um 10:03:
>
>  
>
>>I have a K8S-MX Asus Athlon 64 Motherboard with a 754 pin 3000+ CPU, 
>>which I cam trying to install 4.1 Centos 64 bit.
>>
>>The problem seems to arise when installing onto Mirrored disks,  I have 
>>noticed that from Centos 4 onwards it tries to rebuild the arrays as it 
>>installs which slows the whole process right down across all platforms I 
>>have tried it on.
>>    
>>
>
>Don't know whether I understand you correctly, but RAID1 array sync is
>started with firstboot after the installation finished.
>
>  
>
>>In addition, the install process bails out at random times with random 
>>errors eg.  "Disk Full", "error loading this package or that package",  
>>Error reading DVD etc... now I have burnt several copies of the DVD, 
>>tested them fully, tried installing from CD, even changed the hardware 
>>to a twin Opteron system, changed the RAM changed this disks and tried 
>>everything but it still seems really touch and go as to wether the 
>>install will complete.
>>
>>I haven't managed it yet on the Asus platform it took about 12 goes on 
>>the opteron platform.  Yet Centos 3.4 installs no problem.
>>    
>>
>
>That can be caused by bad cabling (length + quality) because kernel 2.6
>is more sensible for standards. It can too help to deactivate DMA during
>install with: linux ide=nodma.
>
>  
>
>>Finally the last straw was the boot loader problem with occurs either 
>>immediately after reboot after install or on one of the boots soon 
>>after, and I have to do this to fix it:
>>    
>>
>
>That is a known issue and filed in bugzilla.redhat.com. Didn't happen
>for my platform, grub was correctly installed, just not placed into both
>RAID1 drive's MBRs.
>
>  
>
>>Pete
>>    
>>
>
>Alexander
>
>
>  
>
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