various USB device troubles
ive had good luck with finding answers on this site, so id like to start off with a hearty thankyou to everyone that comes here to seek help and share their knowledge.
anyways, ive had some issue with a couple different USB devices that i cant seem to get working, or keep working. maybe someone knows the answers. right now im using fedora core 1. i have a sandisk mini cruiser usb thumbdrive and a sandisk compact flash card reader. the thumbdrive ive never been able to get to work (ive read countless websites on the matter and atleast one thread here, none of them seem to help). the CF reader has had limited success. when i was messing around one day, trying to get my thumbdrive to work, i discovered my CF reader was /dev/sdb1 which was a great moment for me. that moment ended a few days later, when it would no longer mount at that point (i believe it was after a few system restarts). ive tried a few different devices in my search for its 'new' location, but i havent been able to find it. ive beome quite familiar with the program usbview, its mentioned in basically every help site for this ive read, but doesnt seem to help me at all. it doesnt seem to offer me any useful information (or atleast anything my noob eyes can see).. it would be rather nice if it flat out listed 'this device is /dev/sda1' or something like that, maybe it does, i just dont know what imlooking at! maybe someone out there has some ideas they can shoot my way. im all eyes. :) |
Look at the output of the console command dmesg. Look for messages related to your CF reader and thumbdrive.
The first storage device found will be /dev/sda1 the next /dev/sdb1 etc. |
well.. this seems kinda long, but this is what i get in the last part that i would assume covers what were talkinga bout.
(at the time i ran this, i had a card in the reader.) Quote:
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Try this:
1. Create a directory at which you wish to access the USB drive. mkdir /home/user/usb 2. Su to root. su Enter password 3. Mount the drive at the directory created at Step 1. mount /dev/sda1 /home/user/usb This procedure was successful for my Lexar Media Jumpdrive. |
well, still no love on this front. honestly i believe im actually having a series of hardware issues that is causing this. ive basically given up for the moment.. but if anyone can think of anything, please, feel free to spread the knowledge.
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Make sure you install the SCSI libraries before you do anything.
Go to your RPM based utility, do a search, and install anything remotely having to do with SCSI that doesn't conflict whit what's installed. |
Take the reader out. Run dmesg and note the last few lines. Plug the reader into the USB slot (with the card in!) and run dmesg again and see what new lines have appeared. I have a 2.6.3 kernel and a SATA hard disk, which takes over /dev/sda, and the USB mass storage (CF card in reader) gets /dev/sdb. There is only one partition on the device, so its /dev/sdb1. Here are the extra lines in dmesg:
usb 1-7: new high speed USB device using address 2 scsi3 : SCSI emulation for USB Mass Storage devices Vendor: Generic Model: STORAGE DEVICE Rev: 1.01 Type: Direct-Access ANSI SCSI revision: 02 SCSI device sdb: 16064 512-byte hdwr sectors (8 MB) sdb: assuming Write Enabled sdb: assuming drive cache: write through sdb: sdb1 Attached scsi removable disk sdb at scsi3, channel 0, id 0, lun 0 Attached scsi generic sg2 at scsi3, channel 0, id 0, lun 0, type 0 WARNING: USB Mass Storage data integrity not assured USB Mass Storage device found at 2 Despite the warning, it seems to work OK. There are quite a few features that need to be either compiled into the kernel or loaded as modules for this to work. But since you have a recent distro I would think they would be available by default. I can also boot off this CF disk, but as the boot device it gets to be /dev/sda/ |
whenever i isntall i always do full installs. for some reason i hate to have to install things when i need them.... it usually ends up frustrating me.
as for plugging and unplugging, ill give it a try asap and see what i can learn from that. thanks guys! |
rofl, "this seems quite long" understatement of the year
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Quote:
this time, playing around abit i made my system completely unstable :rolleyes: but i learned a few things i shouldnt do, so it wasnt a total loss. before i basically screwed it up, i had my CFreader working but not my thumbdrive. for reasons unknown to me, at the moment, i cant even mount my CFreader.. using the same tactics i used last time. dont know what im missing here.. total newb moment i think! |
Do yourself and me a favor,... bring up the package application anyway. do a search for scsi and see if the items are installed or not. Even with a so-called "full install", not everything gets installed.
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still basically running into walls here. i checked through fedoras package manager and found that absolutely everything it offeres has been installed. just to quell my curiosity, i actually ran the up2date utillity and found another big nothing for scsi.
im pretty sure ive hit a wall on this one. maybe i should go back to a distro where i KNOW this stuff works.. since ive done it before... i dont really want to, i love fedora and i think i may be too lazy to go through the trouble to set up another distro again. |
interesting turn of events for me, i guess you could say.
i decided to update to fedora core 2 and see how it was comming along. i opted for an upgrade instead of a new install since the only thing i could lose was time. it was basically unstable beyond believe on my computer (i know people that run it fine, tho). submitted a whole load of bug reports for it and reinstalled core 1. now my cardreader works, again, but my thumbdrive doesnt. im beginning to think that things randomly happen for me, with no realy rhyme or reason. the last 2 installs of core 1 ive had were exactly the same. same components plugged into the same ports.. all the same hardware. i just dont know. |
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