Further to the usb backup problem I had 3 drives and all three experienced the problem. I was beginning to think about USB interface being faulty, or the backup device being faulty, or the mother board.
Asus Mother board with intel e7300 dual core cpus. Tonight I will check for bios update from ASUS. ------------------ Regards Leslie Mr. Leslie Satenstein mailto:[email protected] mailto [email protected] / [email protected] www.itbms.biz --- On Mon, 11/1/10, Leslie S Satenstein <[email protected]> wrote: From: Leslie S Satenstein <[email protected]> Subject: Re: [MLUG] BTFRS for USB Hard Drive To: "Montreal Linux Users Group" <[email protected]> Date: Monday, November 1, 2010, 5:05 PM Stefan, All I can say is removing the entry from the bios for the CDROM appears to have solved the problem. I think that for $60.00 I will just buy a 1 terabyte intenal drive. I spent all my spare hours trying to analyze the problem, with half the time the drive showing up as being there with a size of zero bytes. Thank you ------------------ Regards Leslie Mr. Leslie Satenstein mailto:[email protected] mailto [email protected] / [email protected] www.itbms.biz --- On Sun, 10/31/10, Stefan Monnier <[email protected]> wrote: From: Stefan Monnier <[email protected]> Subject: Re: [MLUG] BTFRS for USB Hard Drive To: "Montreal Linux Users Group" <[email protected]> Date: Sunday, October 31, 2010, 9:07 PM > Here is the config a) Two hard disks, 1 disk PATA, 1 disk SATA and > 1 CD/DVD Read/write PATA. That means that between the PATA devices, > one becomes master, the other the slave. The USB backup device I had > had a IDE (PATA) drive, and it needs to use drive select to determine > if it is to emulate a master or a slave. The interface tries one or > the other and fails, or collided with the state of the CD/DVD, ergo > problems. Sometimes the drive would lock up, other times it would be > slow. When I unplugged the IDE hard disk, this freed up a line for > master/slave, and my external hard disk just worked normally. When > I repowered the device, but removed the CD/DVD ROM from the bios, the > USB drive worked OK. Based on my experimentation, I believe that the > USB driver builds a bridge to the IDE device driver interface. Any > IDE command gets transfered via the USB port to the external drive. The USB drive's internal protocol (SATA or PATA) is unrelated to the PATA or SATA interfaces you have on your motherboard, so the removal of the CD/DVD from the bios should not have any effect on the performance of your USB drive and if it does have an effect, it would be the same effect whether that USB drive uses PATA or SATA internally. The USB driver doesn't know/care that the disk it's talking to is a PATA harddrive rather than a flash key. The only case where the difference shows up is when you try to use hdparm and smartctl on it, where some USB drives provide some way to tunnel ATA commands over the USB protocol to the actual drive, but for normal access only the standard hardware-agnostic UMS (USB Mass Storage) protocol is used. Stefan _______________________________________________ mlug mailing list [email protected] https://listes.koumbit.net/cgi-bin/mailman/listinfo/mlug-listserv.mlug.ca -----Inline Attachment Follows----- _______________________________________________ mlug mailing list [email protected] https://listes.koumbit.net/cgi-bin/mailman/listinfo/mlug-listserv.mlug.ca
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