Date: Tue, 21 Aug 2007 09:50:39 -0400 From: "Tamouh H." <hakmi@rogers.com> To: "'Bahman M.'" <b.movaqar@gmail.com>, <freebsd-questions@freebsd.org> Subject: RE: READ_DMA Error Message-ID: <0f6001c7e3fa$4261e6f0$6900a8c0@tamouh> In-Reply-To: <6d62f69a0708210419t441042caxe36fcd81339b13e8@mail.gmail.com> References: <6d62f69a0708210419t441042caxe36fcd81339b13e8@mail.gmail.com>
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>=20 > Hi all, >=20 > During FreeBSD 6.2 installation, the process failed because=20 > of errors like the one below: > READ_DMA UDMA .... ICRC error LBA=3D37505132 >=20 > I managed to install by setting hw.ata.ata_dma=3D0 at boot time=20 > but the same errors occur after installation and at boot time=20 > so I had to put hw.ata.ata_dma=3D0 in loader.conf and now the=20 > system is working. >=20 > I checked my hard disk which a 80GB Western Digital+=20 > thoroughly and there were no errors reported (using fsck in=20 > single user mode). Also I used to install Fedora Linux on=20 > this disk without any problems. >=20 > It looks that disabling DMA caused my disk to work with lower=20 > performance. Am I right? If yes, are there any solutions to=20 > eliminate those READ_DMA errors while DMA is enabled? >=20 > Thanks in advance, > Bahman >=20 > PS: > Motherboard: ASUS A7V8X-X > CPU: Athlon XP 2500 at 1833MHz > $ uname -ai > FreeBSD attila 6.2-RELEASE FreeBSD 6.2-RELEASE #0: Fri Jan 12 10:40:27 > UTC 2007 root@dessler.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC > i386 GENERIC Typically, I've seen the READ_DMA error when a hard drive is going bad = or something wrong with the hardware (power supply is failing). But it = could be as you've described.=20 Tamouh
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