problems mounting external USB HD
in [Linux Hardware]
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From: DM on 22 Dec 2009 10:00 Hi all, I have an external USB harddrive which I share between my Linux Slackware 12.2 and Windows XP machines. The USB partitions are all FAT32. All worked well during the first year of use but for the past few months the USB HD gets frequently mounted in USB 1 mode instead of USB 2. I have no idea why this happens. I googled for it and it turns out I'm not the only one with this problem but could not find any solutions. I also noticed that during the shutdown procedure (via poweroff command) the HD does not seem to be unmounted completely. That is the umount command is issued, but when I turn off the HD it is first then that the HD spinns down. Any ideas? Thanks. BTW, is there a way to force the USB HD to be mounted in USB2 mode? Here is the relevant part of my fstab: dev/sda1 /mnt/usb1 vfat umask=000,noexec,nosuid,nodev,rw,users,quiet 0 0 /dev/sda5 /mnt/usb2 vfat umask=000,noexec,nosuid,nodev,rw,users,quiet 0 0 /dev/sda6 /mnt/usb3 vfat umask=000,noexec,nosuid,nodev,rw,users,quiet 0 0 /dev/sda7 /mnt/usb4 vfat umask=000,noexec,nosuid,nodev,rw,users,quiet 0 0 / Dawid Michalczyk http://www.comp.eonworks.com - Linux shell scripts
From: Bill Marcum on 22 Dec 2009 10:25 ["Followup-To:" header set to comp.os.linux.hardware.] On 2009-12-22, DM <dm(a)eonworks.com> wrote: > Hi all, > > I have an external USB harddrive which I share between my Linux > Slackware 12.2 and Windows XP machines. The USB partitions are all > FAT32. All worked well during the first year of use but for the past few > months the USB HD gets frequently mounted in USB 1 mode instead of USB > 2. I have no idea why this happens. I googled for it and it turns out > I'm not the only one with this problem but could not find any solutions. > I've heard that some Seagate drives do this but I don't know if there is a solution.
From: john connolly on 22 Dec 2009 14:41 On Tue, 22 Dec 2009 10:25:12 -0500, Bill Marcum wrote: > ["Followup-To:" header set to comp.os.linux.hardware.] On 2009-12-22, DM > <dm(a)eonworks.com> wrote: >> Hi all, >> >> I have an external USB harddrive which I share between my Linux >> Slackware 12.2 and Windows XP machines. The USB partitions are all >> FAT32. All worked well during the first year of use but for the past >> few months the USB HD gets frequently mounted in USB 1 mode instead of >> USB 2. I have no idea why this happens. I googled for it and it turns >> out I'm not the only one with this problem but could not find any >> solutions. >> > I've heard that some Seagate drives do this but I don't know if there is > a solution. The drive in question is a western digital
From: habibielwa7id on 23 Dec 2009 10:21 On Dec 22, 5:00 pm, DM <d...(a)eonworks.com> wrote: > Hi all, > > I have an external USB harddrive which I share between my Linux > Slackware 12.2 and Windows XP machines. The USB partitions are all > FAT32. All worked well during the first year of use but for the past few > months the USB HD gets frequently mounted in USB 1 mode instead of USB > 2. I have no idea why this happens. I googled for it and it turns out > I'm not the only one with this problem but could not find any solutions. > > I also noticed that during the shutdown procedure (via poweroff command) > the HD does not seem to be unmounted completely. That is the umount > command is issued, but when I turn off the HD it is first then that the > HD spinns down. Any ideas? Thanks. > > BTW, is there a way to force the USB HD to be mounted in USB2 mode? > > Here is the relevant part of my fstab: > > dev/sda1 /mnt/usb1 vfat > umask=000,noexec,nosuid,nodev,rw,users,quiet 0 0 > /dev/sda5 /mnt/usb2 vfat > umask=000,noexec,nosuid,nodev,rw,users,quiet 0 0 > /dev/sda6 /mnt/usb3 vfat > umask=000,noexec,nosuid,nodev,rw,users,quiet 0 0 > /dev/sda7 /mnt/usb4 vfat > umask=000,noexec,nosuid,nodev,rw,users,quiet 0 0 > / > > Dawid Michalczykhttp://www.comp.eonworks.com- Linux shell scripts I think may the power supply of your computer is become weaker and need to be replaced, Can you try to mount this HD on another Linux machine and see what will happen. Some times Linux change the driver parameters if some problem happened, I remember once Linux identified internal sata hard disk as hda although it should seen as sda, And that was because a driver error or conflict, examine dmesg and see the boot error logs, You may issue "dmesg |grep -i ata" and "dmesg |grep -i sda" and so on, May you find what's wrong there.
From: Hactar on 3 Jan 2010 22:16
In article <4b30dce4$0$36587$edfadb0f(a)dtext01.news.tele.dk>, DM <dm(a)eonworks.com> wrote: > Hi all, > > I have an external USB harddrive which I share between my Linux > Slackware 12.2 and Windows XP machines. The USB partitions are all > FAT32. All worked well during the first year of use but for the past few > months the USB HD gets frequently mounted in USB 1 mode instead of USB > 2. I have no idea why this happens. I googled for it and it turns out > I'm not the only one with this problem but could not find any solutions. > > I also noticed that during the shutdown procedure (via poweroff command) > the HD does not seem to be unmounted completely. That is the umount > command is issued, but when I turn off the HD it is first then that the > HD spinns down. Any ideas? Thanks. My USB HDs don't spin down on umount, so while possibly undesirable, that is not unprecedented. I borrowed one from my friend (no idea what it is on the inside, besides 750GB) that does a force umount if USB becomes unpowered (e.g. if I turn off the monitor through whose USB port it's connected). Spin down is one thing, but completely shutting down is another. > BTW, is there a way to force the USB HD to be mounted in USB2 mode? Does the "mount" command show it as mounted when you think it shouldn't be? -- -eben QebWenE01R(a)vTerYizUonI.nOetP royalty.mine.nu:81 A neutrino enters a bar. The bartender asks "Can I get you anything?" The neutrino replies "Nope, just passing through." -- rdu_voyager on Fark |