Ok, didn't help.
Code:
pciide:0:0:0: timeout waiting for DRQ, st=0x51 <DRDY,DSC,ERR>, err=0x00
wd0e: device timeout writing fsbn 47908 (wd0 bn 2100672, cn 521 tn 0 sn 0) retrying
...
newfs: wtfs: write error on block 47908 Input/Output error
First two lines loop ... apparently for each partition and then gives the write error and aborts installer.
I tested with 4.2,4.3 and -current but all gave same result. I also updated my Soekris BIOS.
Is my card broken or is there something else I could try? I didn't find any IDE BIOS options.