Trying to mount a usb disk to a folder

schneidz · 09-21-2016, 12:49 PM

i am not convinced this is an ntfs formatted partition. what does:

Code:

sudo parted -l /dev/sdb

yield ?

michaelk · 09-21-2016, 12:50 PM

I believe it is. Anyway CentOS 6 fdisk does not support GPT partitions, use parted i.e.

parted -l /dev/sdb

BW-userx · 09-21-2016, 03:30 PM

Quote:

Originally Posted by michaelk

I believe it is. Anyway CentOS 6 fdisk does not support GPT partitions, use parted i.e.

parted -l /dev/sdb

so how would one change a GPT to MBR then please share ...

michaelk · 09-21-2016, 03:58 PM

Here is one way.

https://www.gnu.org/software/parted/...e/mklabel.html

Emerson · 09-21-2016, 10:01 PM

With newer fdisk: fdisk -t MBR /dev/sdX

tofino_surfer · 09-22-2016, 05:05 AM

>>>so how would one change a GPT to MBR then please share

You don't change any formatting ! If your disk is GPT you simply use gdisk ( GPT fdisk family ) or parted. If you are using the wrong tools for your disk formatting you don't change the formatting, you just use the right GPT aware tools !

I am absolutely shocked at these comments from "senior" members, both this and the lvm time-wasting advice. The OP's centos 6 system was running on lvm. This had nothing to do with the usb drive. The level of understanding is worse than the OP.

>>>Anyway CentOS 6 fdisk does not support GPT partitions, use parted i.e.

fdisk on any distribution does not support GPT which is why gdisk ( GPT fdisk family ) was created.

Emerson · 09-22-2016, 07:13 AM

Quote:

Originally Posted by tofino_surfer

fdisk on any distribution does not support GPT which is why gdisk ( GPT fdisk family ) was created.

It does here, for at least a year, probably more.

BW-userx · 09-22-2016, 07:44 AM

Quote:

Originally Posted by tofino_surfer

>>>so how would one change a GPT to MBR then please share

You don't change any formatting ! If your disk is GPT you simply use gdisk ( GPT fdisk family ) or parted. If you are using the wrong tools for your disk formatting you don't change the formatting, you just use the right GPT aware tools !

I am absolutely shocked at these comments from "senior" members, both this and the lvm time-wasting advice. The OP's centos 6 system was running on lvm. This had nothing to do with the usb drive. The level of understanding is worse than the OP.

>>>Anyway CentOS 6 fdisk does not support GPT partitions, use parted i.e.

fdisk on any distribution does not support GPT which is why gdisk ( GPT fdisk family ) was created.

oh really now, so what is wrong with changing the formatting? if it does not hurt the drive? cuts down on having to have every kind of tool to deal with everything man comes up with on how to do the same thing. them ones are the ones causing this problem.
I'm going to go eat an apple now.

MarianH · 09-22-2016, 12:11 PM

Quote:

Originally Posted by michaelk

I believe it is. Anyway CentOS 6 fdisk does not support GPT partitions, use parted i.e.

parted -l /dev/sdb

I've run chkdsk ... didn't work. It was saying something that the partition table is unable to read/fix/damaged or so ... don't recall that exactly.
Now I did the above and it says:
[root@server ~]# parted -l /dev/sdb
Model: ATA ST2000LM007-1R81 (scsi)
Disk /dev/sda: 2000GB
Sector size (logical/physical): 512B/4096B
Partition Table: msdos

Number Start End Size Type File system Flags
1 1049kB 538MB 537MB primary ext3 boot
2 538MB 2000GB 2000GB primary lvm

Model: Seagate Expansion Desk (scsi)
Disk /dev/sdb: 2000GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number Start End Size File system Name Flags
1 32.3kB 2000GB 2000GB ntfs

Model: Linux device-mapper (linear) (dm)
Disk /dev/mapper/VolGroup-lv_root: 1996GB
Sector size (logical/physical): 512B/4096B
Partition Table: loop

Number Start End Size File system Flags
1 0.00B 1996GB 1996GB ext4

Model: Linux device-mapper (linear) (dm)
Disk /dev/mapper/VolGroup-lv_swap: 4027MB
Sector size (logical/physical): 512B/4096B
Partition Table: loop

Number Start End Size File system Flags
1 0.00B 4027MB 4027MB linux-swap(v1)

What does that mean? Is it good/bad?

schneidz · 09-22-2016, 01:07 PM

Quote:

Originally Posted by tofino_surfer

>>>so how would one change a GPT to MBR then please share

You don't change any formatting ! If your disk is GPT you simply use gdisk ( GPT fdisk family ) or parted. If you are using the wrong tools for your disk formatting you don't change the formatting, you just use the right GPT aware tools !

I am absolutely shocked at these comments from "senior" members, both this and the lvm time-wasting advice. The OP's centos 6 system was running on lvm. This had nothing to do with the usb drive. The level of understanding is worse than the OP.

>>>Anyway CentOS 6 fdisk does not support GPT partitions, use parted i.e.

fdisk on any distribution does not support GPT which is why gdisk ( GPT fdisk family ) was created.

i agree. the diagnosing has been terrible causing people to suggest things that seem to be unrelated.

Quote:

Originally Posted by MarianH

I've run chkdsk ... didn't work. It was saying something that the partition table is unable to read/fix/damaged or so ... don't recall that exactly.
Now I did the above and it says:
[root@server ~]# parted -l /dev/sdb

Code:

...

Model: Seagate Expansion Desk (scsi)
Disk /dev/sdb: 2000GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number  Start   End     Size    File system  Name  Flags
 1      32.3kB  2000GB  2000GB  ntfs


...

this seems to be most pertinent and the presumptions were correct (it is an ntfs formatted partition on a gpt partitioned disk).
use code tags next time so the output would be easier to read.

starting from square-1, what does:

Code:

mkdir usb-disk; sudo mount /dev/sdb1 usb-disk

print out ?
maybe try running this in case the necessary packages arent installed:

Code:

yum install ntfs-3g ntfsprogs

does anyone know of any restriction of trying to mount a gpt disk on a system booted from an mbr disk ?

MarianH · 09-22-2016, 01:26 PM

Not sure if I understood it well, but I've wrote all those and seems something is missing

Code:

[root@server ~]# mkdir usb-disk
[root@server ~]# sudo mount /dev/sdb1 usb-disk
mount: you must specify the filesystem type
[root@server ~]# yum istall ntfs-3g ntfsprogs
Loaded plugins: changelog, fastestmirror, nethserver_events, presto, refresh-
              : packagekit
No such command: istall. Please use /usr/bin/yum --help

schneidz · 09-22-2016, 01:32 PM

Quote:

Originally Posted by MarianH

Not sure if I understood it well, but I've wrote all those and seems something is missing

Code:

[root@server ~]# mkdir usb-disk
[root@server ~]# sudo mount /dev/sdb1 usb-disk
mount: you must specify the filesystem type
[root@server ~]# yum istall ntfs-3g ntfsprogs
Loaded plugins: changelog, fastestmirror, nethserver_events, presto, refresh-
              : packagekit
No such command: istall. Please use /usr/bin/yum --help

^you made a typo (are you able to copy-and-pasta ?). should be:

Code:

sudo yum install ntfs-3g ntfsprogs

maybe try also:

Code:

sudo mount -t ntfs /dev/sdb1 usb-disk

Emerson · 09-22-2016, 01:35 PM

Root does not need sudo.

schneidz · 09-22-2016, 01:39 PM

i doubt it but maybe your kernel was compiled without efi support. run this to confirm:

Code:

[schneidz@hyper ~]$ grep EFI `ls -1 /boot/config-* | tail -n 1`
CONFIG_MODULE_SIG_UEFI=y
CONFIG_EFI_PARTITION=y
CONFIG_EFI=y
CONFIG_EFI_STUB=y
CONFIG_EFI_MIXED=y
CONFIG_EFI_SECURE_BOOT_SIG_ENFORCE=y
CONFIG_FB_EFI=y
CONFIG_XEN_EFI=y
CONFIG_DMI_SCAN_MACHINE_NON_EFI_FALLBACK=y
# EFI (Extensible Firmware Interface) Support
# CONFIG_EFI_VARS is not set
CONFIG_EFI_ESRT=y
CONFIG_EFI_RUNTIME_MAP=y
# CONFIG_EFI_FAKE_MEMMAP is not set
CONFIG_EFI_RUNTIME_WRAPPERS=y
# CONFIG_EFI_CAPSULE_LOADER is not set
CONFIG_UEFI_CPER=y
CONFIG_CACHEFILES=m
# CONFIG_CACHEFILES_DEBUG is not set
# CONFIG_CACHEFILES_HISTOGRAM is not set
CONFIG_EFIVAR_FS=y
CONFIG_EARLY_PRINTK_EFI=y
# CONFIG_EFI_PGT_DUMP is not set
CONFIG_EFI_SIGNATURE_LIST_PARSER=y

also, maybe you need to enable something like rpmfusion in order to install ntfs:

Code:

su -c 'yum localinstall --nogpgcheck http://download1.rpmfusion.org/free/el/updates/6/i386/rpmfusion-free-release-6-1.noarch.rpm http://download1.rpmfusion.org/nonfree/el/updates/6/i386/rpmfusion-nonfree-release-6-1.noarch.rpm'

MarianH · 09-22-2016, 01:47 PM

Quote:

Originally Posted by schneidz

i doubt it but maybe your kernel was compiled without efi support. run this to confirm:

Code:

[schneidz@hyper ~]$ grep EFI `ls -1 /boot/config-* | tail -n 1`
CONFIG_MODULE_SIG_UEFI=y
CONFIG_EFI_PARTITION=y
CONFIG_EFI=y
CONFIG_EFI_STUB=y
CONFIG_EFI_MIXED=y
CONFIG_EFI_SECURE_BOOT_SIG_ENFORCE=y
CONFIG_FB_EFI=y
CONFIG_XEN_EFI=y
CONFIG_DMI_SCAN_MACHINE_NON_EFI_FALLBACK=y
# EFI (Extensible Firmware Interface) Support
# CONFIG_EFI_VARS is not set
CONFIG_EFI_ESRT=y
CONFIG_EFI_RUNTIME_MAP=y
# CONFIG_EFI_FAKE_MEMMAP is not set
CONFIG_EFI_RUNTIME_WRAPPERS=y
# CONFIG_EFI_CAPSULE_LOADER is not set
CONFIG_UEFI_CPER=y
CONFIG_CACHEFILES=m
# CONFIG_CACHEFILES_DEBUG is not set
# CONFIG_CACHEFILES_HISTOGRAM is not set
CONFIG_EFIVAR_FS=y
CONFIG_EARLY_PRINTK_EFI=y
# CONFIG_EFI_PGT_DUMP is not set
CONFIG_EFI_SIGNATURE_LIST_PARSER=y

also, maybe you need to enable something like rpmfusion in order to install ntfs:

Code:

su -c 'yum localinstall --nogpgcheck http://download1.rpmfusion.org/free/el/updates/6/i386/rpmfusion-free-release-6-1.noarch.rpm http://download1.rpmfusion.org/nonfree/el/updates/6/i386/rpmfusion-nonfree-release-6-1.noarch.rpm'

Code:

[root@server ~]# grep EFI 'ls -l /boot/config-* | tail -n 1'
grep: ls -l /boot/config-* | tail -n 1: No such file or directory
You have new mail in /var/spool/mail/root