/dev/sda1 missing

**rafgar** · 11-20-2005

I have not a clue how this happened, but /dev/sda1 has gone missing from my system. I know that I didn't accidently delete it (I'm not that stupid), but it's gone. One minute it was there and I was using it with a flash drive, then I umounted it, put another flash drive in, and /dev/sda1 was missing when I tried to mount it up. Any idea how to fix this?

**genesus** · 11-20-2005

have you tried /dev/sdb?

**bryansmith** · 11-20-2005

Did you plug it in the same usb port? Have you tried /dev/sda2 or /dev/sda3?

Bryan

**rafgar** · 11-21-2005

# mount -t vfat /dev/sdb /media/usbflash
mount: special device /dev/sdb does not exist
# mount -t vfat /dev/sdb1 /media/usbflash
mount: special device /dev/sdb1 does not exist
# mount -t vfat /dev/sda2 /media/usbflash
mount: special device /dev/sda2 does not exist
# mount -t vfat /dev/sda3 /media/usbflash
mount: special device /dev/sda3 does not exist
# mount -t vfat /dev/sda /media/usbflash
mount: /dev/sda is not a valid block device

Yes, the flash drive is plugged in. Looking at my file browers in /dev, it the list skips from sda to sequencer.

**genesus** · 11-21-2005

did you recently upgrade to a 2.6 kernel?

**ericrun** · 11-21-2005

Have you attempted to run the MAKEDEV command?

Code:

cd /dev/
./MAKEDEV sda

I'm not sure on that syntax, but those commands should attempt to recreate the file in the dev folder.

**farslayer** · 11-22-2005

did you tail /var/log/messages after plugging in the new device ? it should tell you what ID it has assigned the USB drive..

**selva_shankar** · 11-25-2005

hello ppl
i have an IBM Thinkpad (Pentium MMX with Debian Woody)..
my USB drive (Dell 128 MB Memory Key) doesnt get recognized in this box..
i tried sda2,sda3,sdb, MAKEDEV...
if i enter the foll:
mount /dev/sda /mnt/usb_flash

(or)

mount /dev/sda /mnt/usbflash

this is wat i get:
mount:the kernel does not recognize /dev/sda as a block device (maybe 'insmod driver'?)
any suggestions...
pls do reply..
thanks a lot

**rafgar** · 11-27-2005

Originally Posted by ericrun

Have you attempted to run the MAKEDEV command?

Code:

cd /dev/
./MAKEDEV sda

I'm not sure on that syntax, but those commands should attempt to recreate the file in the dev folder.

This works, but I have to do it every time I log in.

**AlexK** · 11-27-2005

Originally Posted by selva_shankar

hello people
i have an IBM Thinkpad (Pentium MMX with Debian Woody)..
my USB drive (Dell 128 MB Memory Key) doesnt get recognized in this box..
i tried sda2,sda3,sdb, MAKEDEV...
if i enter the foll:
mount /dev/sda /mnt/usb_flash

(or)

mount /dev/sda /mnt/usbflash

this is what i get:
mount:the kernel does not recognize /dev/sda as a block device (maybe 'insmod driver'?)
any suggestions...
pls do reply..
thanks a lot

try compiling your kernel with scsi support and usb mass storage. I know this documentation is for gentoo, but if you enable those options when you compile your kernel, you can have support for usb.

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