Hello, I install linux embedded 2.6 on a compact flash sandisk 256 Mbytes and i have no problem but with compact flash sandisk 512 Mbytes , the boot is very very long ( 1 minute more) for example fdisk -l use 30 secondes for response !! Perhaps a probleme with the bios ?
problem with compact flash 512 Mbytes
Apr 18, 2006
6 Replies
Once it booted, linux does not use the bios anymore. Most likely a configuration issue with the kernel. Disable DMA if possible, some CFs do not work well with it.
i
do
Yes, but the average access time would not be much different. I have a CF with 10MB/s transfer rate and a hard disk with ATA100 (over 100MB/s in theory). However, the CF boot in 20 seconds and the hard disk in close to a minute.
Le Tue, 18 Apr 2006 09:05:42 -0700, linnix a écrit :
Thank you, I have also an Hard disk for data , Will the transfer rate be slowler ?
Le Tue, 18 Apr 2006 09:05:42 -0700, linnix a écrit :
OK but where in the file .config can i disable the DMA ?
i
do
You have to disable it in the IDE driver. We are doing it for the 2.4 kernel, not sure about the 2.6 kernel. For our customers, we provide the base architectures for them at=20
formatting link
use the hdparm utility, and put that somewhere early on in the boot sequence.
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