External disk stuck in a readonly state!

[nyung47]

Hello, I can't write onto my External Disk, it is working fine on Windows and chkdsk found no errors! But on Ubuntu it is readonly and I can't write to it. It is strange, I already reformatted the disk and it was working fine for a short time on Ubuntu and I didn't use it on Windows for anything, except to copy some files from it. And now again: it is stuck in readonly state on Ubuntu! I tried following commands, but they did not work:

 sudo mount -o remount,uid=1000,gid=1000,rw /dev/sdc1

 command1:sudo umount /dev/sdc1  command 2: sudo mkdir toshibaHDD command3: sudo mount -o rw,uid=1000,gid=1000,user,exec,umask=003,blksize=4096 /dev/sdc1 /media/toshibaHDD

Any help appreciated TY! PS: sorry about formatting, indentation doesn't work!

[ActionParsnip]

What file system are you using on the file system please?

[ActionParsnip]

Before you unplug the device physically, do you use the safe remove feature in the OS before pulling the cable?

[oldfred]

If NTFS, did Windows set fast boot on?
That sets hibernation flag and then the Linux NTFS driver cannot default mount the partition.

[nyumg47]

What file system are you using on the file system please?

NTFS

Before you unplug the device physically, do you use the safe remove feature in the OS before pulling the cable?

I usually turn off PC and then disconnect it. Because Safely Remove option is missing! But I could remove it possibly ,while PC was on, by accident.

If NTFS, did Windows set fast boot on? That sets hibernation flag and then the Linux NTFS driver cannot default mount the partition.

I don't use fast boot! Nor fast startup, nor hibernation!

[ActionParsnip]

If you connect it to a different Windows system then safe remove it, does it help?

[tea for one]

Because Safely Remove option is missing!

Are you using Windows 10?

File Explorer > Locate Drive > Right Click > Eject
A message should appear:- Safe to remove hardware

Windows updates sometimes re-enable fast start-up without user intervention.

[nyumg47]

If you connect it to a different Windows system then safe remove it, does it help?

Problem is that I don't have "safely remove" always visible in "Files" on Ubuntu. Then I should probably disconnect it, only after I turn off PC, if I don't forget, which could happen... Also it is not good for a disk!

Are you using Windows 10? File Explorer > Locate Drive > Right Click > Eject A message should appear:- Safe to remove hardware Windows updates sometimes re-enable fast start-up without user intervention.

That actually worked, many thanks

[tea for one]

Problem is that I don't have "safely remove" always visible in "Files" on Ubuntu. Then I should probably disconnect it, only after I turn off PC, if I don't forget, which could happen... Also it is not good for a disk! That actually worked, many thanks

That looks like a step forward.

In Files for Ubuntu, you also right click to expose eject or safely remove.

Can you now read/write to the drive in Ubuntu?