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Problem recognising USB disks - SOLVED
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kdvgent
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Joined: 29 Sep 2004
Posts: 328
Location: Belgium

PostPosted: Mon May 14, 2018 12:00 pm    Post subject: Problem recognising USB disks - SOLVED Reply with quote

Was away for a week. This morning, updated my system and now I can not connect USB drives (USB sticks or USB external disk) anymore.

Dmesg (tail)
Code:
[  553.804103] usb 1-2: new high-speed USB device number 5 using xhci_hcd
[  553.935092] usb 1-2: New USB device found, idVendor=13fe, idProduct=3600
[  553.935098] usb 1-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[  553.935102] usb 1-2: Product: USB DISK 2.0
[  553.935106] usb 1-2: Manufacturer:         
[  553.935109] usb 1-2: SerialNumber: 07B7010762212E46
[  553.935667] usb-storage 1-2:1.0: USB Mass Storage device detected
[  553.935896] usb-storage 1-2:1.0: Quirks match for vid 13fe pid 3600: 4000
[  553.935940] scsi host6: usb-storage 1-2:1.0
[  555.001585] scsi 6:0:0:0: Direct-Access              USB DISK 2.0     PMAP PQ: 0 ANSI: 0 CCS
[  555.002058] sd 6:0:0:0: Attached scsi generic sg1 type 0
[  558.304247] sd 6:0:0:0: [sdb] 31277056 512-byte logical blocks: (16.0 GB/14.9 GiB)
[  558.305098] sd 6:0:0:0: [sdb] Write Protect is off
[  558.305109] sd 6:0:0:0: [sdb] Mode Sense: 23 00 00 00
[  558.305972] sd 6:0:0:0: [sdb] No Caching mode page found
[  558.305976] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[  558.332276] sd 6:0:0:0: [sdb] Attached SCSI removable disk

Code:
cube ~ # fdisk -l /dev/sdb
Disk /dev/sdb: 14.9 GiB, 16013852672 bytes, 31277056 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x3c180874

Device     Boot Start      End  Sectors  Size Id Type
/dev/sdb1  *       32 31277055 31277024 14.9G  c W95 FAT32 (LBA)

Code:
cube ~ # mount /dev/sdb1 /mnt/disk
mount: /mnt/disk: special device /dev/sdb1 does not exist.

Code:
cube ~ # uname -a
Linux cube 4.16.8-gentoo #1 SMP Mon May 14 09:15:21 CEST 2018 x86_64 Intel(R) Core(TM) i5-7600 CPU @ 3.50GHz GenuineIntel GNU/Linux

Not sure if it is related to the update this morning but last week, things worked fine. Booting with previous kernel version does not help.

Any suggestions?

Many thanks in advance.

[Moderator edit: changed [quote] tags to [code] tags to preserve output layout. -Hu]


Last edited by kdvgent on Mon May 14, 2018 12:55 pm; edited 1 time in total
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NeddySeagoon
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Joined: 05 Jul 2003
Posts: 43184
Location: 56N 3W

PostPosted: Mon May 14, 2018 12:11 pm    Post subject: Reply with quote

kdvgent,

The whole drive is there. /dev/sdb extsts but the partitions are missing.
Do you have the MSDOS partition table code in your kernel?
If its missing, the kernel can't read your partition table.

The option for GPT is separate, so that will still work.
_________________
Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.
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kdvgent
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Joined: 29 Sep 2004
Posts: 328
Location: Belgium

PostPosted: Mon May 14, 2018 12:55 pm    Post subject: Reply with quote

NeddySeagoon,

Don't know how I lost this one. Thanks very much.
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