On Tue, 14 Mar 2006, Pete Zaitcev wrote: > On Tue, 14 Mar 2006 11:40:09 -0500 (EST), Alan Stern <[EMAIL PROTECTED]> > wrote: > > > 1. You have to have entries in your initrd's filesystem for /dev/sda > > and /dev/sda1. Otherwise you won't have any way to access the USB > > device. > > Or you have to have udev running. I think this is what Fedora does. > Peter Jones said he was booting with USB keys just fine (using ub).
Yes. Even with ub, if you don't have udev running then you'll need entries for /dev/uba and /dev/uba1 (or whatever the devices names are supposed to be). > > 2. You have to allow time for the USB and SCSI stacks to recognize > > the pendrive. 5 seconds is minimal, 10 seconds should be plenty. > > I think it can be faster. Fedora polls /sys/block to see if devices > have appeared (either sda or uba, any one works). For almost all devices it can be a lot faster. However usb-storage has a built-in delay that defaults to 5 seconds. The delay length can be changed by setting the delay_use= module parameter. But you don't change it then you'll need to wait at least 5 seconds. Alan Stern ------------------------------------------------------- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. Attend the live webcast and join the prime developer group breaking into this new coding territory! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642 _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
