Thanks for quick reply. I tried 2.6.26rc1. It hangs same as 2.6.25. kernel 2.6.26rc1 with cs5520 cannot boot. cs5520 scans ide0 and ide1. It seems 2nd port DMA base issue was solved. dmesg is follow: Uniform Multi-Platform E-EDI driver ide: Assuming 33MHz system bus speed for PIO modes: override with idebus=xx Cyrix 5520: IDE controller (0x1078:0x0002 rev 0x00) at PCI slot 0000:00:12.0 ide0: BM-DMA at 0x5000-0x5007 ide1: BM-DMA at 0x5008-0x500f hda: IC25N030ATCS04-0, ATA DISK drive ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 ide1 at 0x170-0x177,0x376 on irq 14 hda: max request size: 128KiB (hang) From: "Bartlomiej Zolnierkiewicz" <bzolnier@xxxxxxxxx> Subject: Re: kernel 2.6.25 with ide driver cs5520 does not boot. Date: Thu, 8 May 2008 15:07:31 +0200 (snip) > 2.6.24 contained a bug in calculating DMA base for the second port (thus > the error message) but it shouldn't affect anything (ide1 is still probed > according to dmesg, please let me know if there are some devices on ide1 > that are not getting detected). I seems that this issue was resolved. Thanks. -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html