Rescue CD help

**thorn** · 07-08-2011

my fedora system crashed but i can log into rescue mode

i'm trying to mount a usb drive but can't

i can see my usb by running fdisk -l

but when i run 'mount /dev/sdb1 /mnt/sdb1'

it never mounts the usb drive

**yancek** · 07-09-2011

Do you get any output when you use the mount command? If so, what? Is this an external hard drive? flash drive?

**thorn** · 07-09-2011

the usb is a flash drive, and the only output is a blinking underscore.

i've tried to mount other flash drives the same way and get the same result

**MikeTbob** · 07-09-2011

After you plug the device in, try the dmesg command....it might give a clue.

Code:

tail -50 /var/log/dmesg

Should give you the last 50 lines. You may need to use sudo or root as warranted.

**thorn** · 07-09-2011

thanks for the replies

i tried the above code and the response was

Code:

tail: cannot open '/var/log/dmesg' for reading: No such file or directory

but running dmesg does give me some info about the connected flash drive

**MikeTbob** · 07-09-2011

You can post that if you want. Someone might be able to make sense of it.

**thorn** · 07-09-2011

ok. here's dmesg of my flash drive in rescue mode

Code:

...
usb 1-1.1:new high speed USB device using ehci_hcd and address 4
usb 1-1.1:new usb device found, idvendor=0781, idproduct=5406
usb 1-1.1:new usb device strings: Mfr=1, product=2, serialnumber=3
usb 1-1.1:product: u3 cruzer micro
usb 1-1.1:manufacturer: sandisk
usb 1-1.1:serial number: 173...
usbcore: registered new interface driver uas
Initializing USB Mass Storage driver...
scsci6: usb-storage 1-1.1:1.0
usbcore: reigstered new interface driver usb-storage
USB Mass Storage support registered.
sci 6:0:0:0: Direct-Acess sandisk u3 cruzer micro 8.02 PQ:0 ANSI: 0 CCS
sci 6:0:0:0: attached scsi generic sg2 type 0
sci 6:0:0:0: [sdb] 15696871 512-bye logical blocks: (8.03GB/7.48 GiB)
sci 6:0:0:0: [sdb] write protect is off
sci 6:0:0:0: [sdb] mode sense: 45 00 00 08
sci 6:0:0:0:[sdb] asking for cache data failed
sci 6:0:0:0: [sdb] assuming drive cache write through
sci 6:0:0:0: [sdb] asking for cache data failed
sci 6:0:0:0: [sdb] assuming drive cache: write through
 sdb: sdb1 sdb2 sdb3
sci 6:0:0:0: [sdb] asking for cache data failed
sci 6:0:0:0: [sdb] assuming drive cache: write through
sci 6:0:0:0: [sdb] asking for cache data failed
sci 6:0:0:0: [sdb] attached SCSI removable disk

**thorn** · 07-09-2011

magically my usb mounted

but I had set a chmod -r-w-x for all but root

i tried to chmod the usb

chmod -R a=+r+w+x /mnt/sdc1

but that didn't work. any clues?

**yancek** · 07-09-2011

In your first post you indicate your Fedora instlalation crashed and you were logging into Rescue Mode. You are trying to then mount the flash drive, correct. What is on the flash drive? Data? Do you have another OS on it? What filesystem type?

**thorn** · 07-09-2011

my flash drive is file format ext4 and i have data that is owned by root of my crashed installation

i'm trying now to somehow gain root access and chmod all the data so it is accessible to all and then just install a new system

i successfully was able to view data on another flash drive but can't on the one that i'd like the data from

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