Before I start posting details here is there a app I can use to look into the details of an USB memory stick?
My reason is the 64GB stick formatted as exfat does not work but a 256GB stick formatted as exfat does work. Both are Samsung devices but I cannot remember if and when I reformatted them. I wonder if I might have set an allocation unit which is indigestible format for Vero 4K. What is best tool to look into details of USB?
Budge.
I doubt this has anything to do with the fact that this mass-storage is connected through USB. Unless proven otherwise, I would check about partitioning and the file system(s) on the device or it’s partitions.
As usual (with the device connected and as root):
fdisk -l
lsblk -f
And to speculate on the next step:
When you mean with “is the 64GB stick formatted as exfat” (we hope to see what it is using the commands above), that you have created an exfat file system on the device or on a partition of 64GB size, are you sure an exfat file ssytem supports such a size. Because it is non-Linux, I do not know anything about it, but some fs types do have their limitations.
Probably I am also confused because you compare “TW laptop” (very vague, but a type of computer with a well known operating system) with “Vero 4k” (probably somelhinng computer like with unspecified operating system?).
Also in fact you only say “it does not work” without any indication of what happens (firework out of the USB connector, system down, …?).
Hi Henk,
Thanks for the suggestions. Here is what I have from the 64GB stick which works fine on my Lenovo T530 but not on my Vero4K which uses and Arm processor and has a Debian like OS.
alastair@localhost:~> sudo fdisk -l
[sudo] password for root:
**Disk /dev/sda: 931.51 GiB, 1000204886016 bytes, 1953525168 sectors**
Disk model: CT1000MX500SSD1
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: 235BA8AC-05E4-4233-AA37-D1DAEFDBED28
**Device **** Start**** End**** Sectors**** Size****Type**
/dev/sda1 2048 3074046 3071999 1.5G EFI System
/dev/sda2 3074048 514862302 511788255 244G Microsoft basic data
/dev/sda3 514863104 516216831 1353728 661M Windows recovery environment
/dev/sda4 516218880 517961727 1742848 851M Microsoft basic data
/dev/sda5 517961728 546633727 28672000 13.7G Microsoft basic data
/dev/sda6 546633728 630519807 83886080 40G Linux filesystem
/dev/sda7 630519808 634714111 4194304 2G Linux swap
/dev/sda8 634714112 1953525134 1318811023 628.9G Linux filesystem
**Disk /dev/loop0: 30.27 MiB, 31735808 bytes, 61984 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
**Disk /dev/loop2: 95.73 MiB, 100376576 bytes, 196048 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
**Disk /dev/loop3: 55.36 MiB, 58052608 bytes, 113384 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
**Disk /dev/loop4: 55.32 MiB, 58007552 bytes, 113296 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
**Disk /dev/loop1: 30.94 MiB, 32440320 bytes, 63360 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
**Disk /dev/sdb: 59.75 GiB, 64160400896 bytes, 125313283 sectors**
Disk model: Flash Drive
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: 0x0b2a01bb
**Device ****Boot****Start**** End**** Sectors**** Size****Id****Type**
/dev/sdb1 2048 125313023 125310976 59.8G 7 HPFS/NTFS/exFAT
alastair@localhost:~>
alastair@localhost:~> lsblk -f
NAME FSTYPE FSVER LABEL UUID FSAVAIL FSUSE% MOUNTPOINTS
loop0
squash 4.0 0 100% /snap/snapd/9279
loop1
squash 4.0 0 100% /snap/snapd/9721
loop2
squash 4.0 0 100% /snap/get-iplayer/250
loop3
squash 4.0 0 100% /snap/core18/1932
loop4
squash 4.0 0 100% /snap/core18/1885
sda
├─sda1
│ vfat FAT32 0F08-0688 1.4G 2% /boot/efi
├─sda2
│ ntfs Windows7_OS
│ B8168B4B168B0A18
├─sda3
│ ntfs 94B0612AB06113D0
├─sda4
│ ntfs 76BAC38DBAC34877
├─sda5
│ ntfs Lenovo_Recovery
│ D42C841B2C83F6B0
├─sda6
│ btrfs e603e5d0-7019-4f80-a3db-0042732f33f4 27.5G 31% /var
│ /usr/local
│ /tmp
│ /srv
│ /root
│ /opt
│ /boot/grub2/x86_64-efi
│ /boot/grub2/i386-pc
│ /
├─sda7
│ swap 1 c8c36e04-835d-4151-8ac2-aa8aea7e4fb1 [SWAP]
└─sda8
ext4 1.0 adaaa3ba-2329-4210-85e6-3246af0b6fc5 525.3G 10% /home
sdb
└─sdb1
exfat 1.0 16_USB_64G
902C-190C 59.1G 1% /run/media/alastair/16
_USB_64G
sr0
For comparison, here are the same details from the 256GB stick:-
alastair@localhost:~> sudo fdisk -l
[sudo] password for root:
**Disk /dev/sda: 931.51 GiB, 1000204886016 bytes, 1953525168 sectors**
Disk model: CT1000MX500SSD1
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: 235BA8AC-05E4-4233-AA37-D1DAEFDBED28
**Device **** Start**** End**** Sectors**** Size****Type**
/dev/sda1 2048 3074046 3071999 1.5G EFI System
/dev/sda2 3074048 514862302 511788255 244G Microsoft basic data
/dev/sda3 514863104 516216831 1353728 661M Windows recovery environment
/dev/sda4 516218880 517961727 1742848 851M Microsoft basic data
/dev/sda5 517961728 546633727 28672000 13.7G Microsoft basic data
/dev/sda6 546633728 630519807 83886080 40G Linux filesystem
/dev/sda7 630519808 634714111 4194304 2G Linux swap
/dev/sda8 634714112 1953525134 1318811023 628.9G Linux filesystem
**Disk /dev/loop0: 30.27 MiB, 31735808 bytes, 61984 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
**Disk /dev/loop2: 95.73 MiB, 100376576 bytes, 196048 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
**Disk /dev/loop3: 55.36 MiB, 58052608 bytes, 113384 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
**Disk /dev/loop4: 55.32 MiB, 58007552 bytes, 113296 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
**Disk /dev/loop1: 30.94 MiB, 32440320 bytes, 63360 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
**Disk /dev/sdb: 239.02 GiB, 256641603584 bytes, 501253132 sectors**
Disk model: Flash Drive
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: 0x00000000
**Device ****Boot****Start**** End**** Sectors**** Size****Id****Type**
/dev/sdb1 256 501253099 501252844 239G 7 HPFS/NTFS/exFAT
alastair@localhost:~>
alastair@localhost:~> lsblk -f
NAME FSTYPE FSVER LABEL UUID FSAVAIL FSUSE% MOUNTPOINTS
loop0
squash 4.0 0 100% /snap/snapd/9279
loop1
squash 4.0 0 100% /snap/snapd/9721
loop2
squash 4.0 0 100% /snap/get-iplayer/250
loop3
squash 4.0 0 100% /snap/core18/1932
loop4
squash 4.0 0 100% /snap/core18/1885
sda
├─sda1
│ vfat FAT32 0F08-0688 1.4G 2% /boot/efi
├─sda2
│ ntfs Windows7_OS
│ B8168B4B168B0A18
├─sda3
│ ntfs 94B0612AB06113D0
├─sda4
│ ntfs 76BAC38DBAC34877
├─sda5
│ ntfs Lenovo_Recovery
│ D42C841B2C83F6B0
├─sda6
│ btrfs e603e5d0-7019-4f80-a3db-0042732f33f4 27.5G 31% /var
│ /usr/local
│ /tmp
│ /srv
│ /root
│ /opt
│ /boot/grub2/x86_64-efi
│ /boot/grub2/i386-pc
│ /
├─sda7
│ swap 1 c8c36e04-835d-4151-8ac2-aa8aea7e4fb1 [SWAP]
└─sda8
ext4 1.0 adaaa3ba-2329-4210-85e6-3246af0b6fc5 525.3G 10% /home
sdb
└─sdb1
exfat 1.0 13_USB_256G
64A5-F009 116G 51% /run/media/alastair/13_
USB_256G
sr0
alastair@localhost:~>
The Vero 4K device is working with HDMI display and no keyboard but a wand so for now all I can see on the screen is the absence of any files.
I shall remove the device so I can connect with full keyboard & monitor but had hoped to see some difference. I may have missed something but do you see any obvious issues from the comparisons above? How may I see the allocation unit size?
Budge.
I do not see strange things in your output. Both devices are partitioned into one partition (sounds strange, I always wonder why people partition when they do not need parts???). Both with an exfat file system. In the meantime I checked Wikipedia, but it looks as if exfat can grow far beyond what you have. Both sector size, etc. all 512 bytes.
I understand that the problem is on a Linux system, but not on an openSUSE one. And that you can not even check if it is mounted at all? And who is assumed to mount it? When there is no Desktop Environment to do that for an end-user, the mount must be done otherwise (normally that is by a mount command).
Hi Henk,
Sorry if I was not clear but the USB devices are auto mounted and both USB sticks mount and may be seen on the system but the problem one is showing empty, ie no files whereas the working stick is full.
In case you ask, the problem stick is now empty as I have moved the files to a safe place in anticipation of having to re-format.
I shall just check again by coping good files from one stick to the other just to be sure it is not the files which are the problem. I create partitions out of habit and believe it is good practice. Tell me if I am wrong.
Thanks again,
Budge
I have only a few remarks.
Some appliances have unpartitioned drives. This comes with a lack of flexibility. Overhead of unneeded partitioning is very small.
i3-4130:~ # fdisk -l /dev/sdb
Disk /dev/sdb: 10.08 MiB, 10570752 bytes, 20646 sectors
Disk model: FR735XT Flash
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: 0x00000000
i3-4130:~ #
i3-4130:~ # journalctl -b 0 _KERNEL_SUBSYSTEM=scsi
-- Journal begins at Tue 2021-11-30 07:39:48 CET, ends at Sat 2021-12-11 08:38:46 CET. --
...
Dec 11 08:21:21 i3-4130 kernel: scsi 4:0:0:0: Direct-Access ATA CT250MX500SSD1 023 PQ: 0 ANSI: 5
...
Dec 11 08:21:24 i3-4130 kernel: scsi 6:0:0:0: Direct-Access Brother MFC-255CW 1.00 PQ: 0 ANSI: 2
...
# connect
Dec 11 08:21:24 i3-4130 kernel: sd 6:0:0:0: Attached scsi generic sg1 type 0
Dec 11 08:21:24 i3-4130 kernel: sd 6:0:0:0: [sdb] Media removed, stopped polling
Dec 11 08:21:24 i3-4130 kernel: sd 6:0:0:0: [sdb] Attached SCSI removable disk
Dec 11 08:36:55 i3-4130 kernel: scsi host6: usb-storage 2-10:1.0
Dec 11 08:36:56 i3-4130 kernel: scsi 6:0:0:0: Direct-Access Garmin FR735XT Flash 1.00 PQ: 0 ANSI: 5
Dec 11 08:36:56 i3-4130 kernel: sd 6:0:0:0: Attached scsi generic sg1 type 0
Dec 11 08:36:56 i3-4130 kernel: sd 6:0:0:0: [sdb] 20646 512-byte logical blocks: (10.6 MB/10.1 MiB)
Dec 11 08:36:56 i3-4130 kernel: sd 6:0:0:0: [sdb] Write Protect is off
Dec 11 08:36:56 i3-4130 kernel: sd 6:0:0:0: [sdb] Mode Sense: 23 00 00 00
Dec 11 08:36:56 i3-4130 kernel: sd 6:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
Dec 11 08:36:56 i3-4130 kernel: sd 6:0:0:0: [sdb] Attached SCSI removable disk
# disconnct
Dec 11 08:38:46 i3-4130 kernel: sd 6:0:0:0: [sdb] Synchronizing SCSI cache
Dec 11 08:38:46 i3-4130 kernel: sd 6:0:0:0: [sdb] Synchronize Cache(10) failed: Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
i3-4130:~ #