rm: cannot remove file: Read-only file system

Thread Tools Search this Thread
# 1  
rm: cannot remove file: Read-only file system

I have a file on a usb stick which I cannot remove and the following error message shows:
rm: cannot remove `file-name': Read-only file system

The usb stick is mounted as read-only on an Ubuntu system:
$ mount
/dev/sda1 on / type ext4 (rw,errors=remount-ro)
proc on /proc type proc (rw)
none on /sys type sysfs (rw,noexec,nosuid,nodev)
none on /sys/fs/fuse/connections type fusectl (rw)
none on /sys/kernel/debug type debugfs (rw)
none on /sys/kernel/security type securityfs (rw)
none on /dev type devtmpfs (rw,mode=0755)
none on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
none on /dev/shm type tmpfs (rw,nosuid,nodev)
none on /var/run type tmpfs (rw,nosuid,mode=0755)
none on /var/lock type tmpfs (rw,noexec,nosuid,nodev)
none on /lib/init/rw type tmpfs (rw,nosuid,mode=0755)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev)
/dev/sdb1 on /media/disk type vfat (rw,nosuid,nodev,uhelper=hal,uid=1000,umask=0077,shortname=winnt,utf8)

How can I mount it read and write without having to log in as root?
# 2  
If you don't have root and can't get root, you can't run mount -o remount,rw /media/disk. Any mount operation, even "user" ones, requires CAP_SYS_ADMIN. User ones only work because /bin/mount is a setuid executable. GUI's only get away with automounting by getting root permissions somehow. And so forth.

That said, how did this filesystem become read-only? Check your dmesg. Linux will force a filesystem read-only if an I/O error happens to it.
# 3  
When running dmesg I get lots of messages I have not seen before within dmesg:
[  313.420846] FAT: Filesystem error (dev sdb1)
[  313.420849]     fat_get_cluster: invalid cluster chain (i_pos 193270281)
[  268.192008] FAT: FAT read failed (blocknr 8688)
[  268.290867] FAT: Directory bread(block 12079392) failed

So it is a bit of a mystery as this happened suddenly. Also the situation did not change when running sudo mount -o remount,rw /media/disk
So perhaps best to restart the computer.
# 4  
It's having difficulty reading the flash drive, for sure. A reboot would be a good start.

Even if it starts working again, back up that drive just to be safe.
# 5  
I have done some rebooting already, which did not yield any change. Could this a sign of pending file corruption just because it is on a USB stick?

Previous Thread | Next Thread
Thread Tools Search this Thread
Search this Thread:
Advanced Search

Test Your Knowledge in Science: Mathematics
Difficulty: Medium
The proof for the Chinese Remainder Theorem used in Number Theory was NOT developed by its first publisher, Sun Tzu.
True or False?

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Read value of a file, remove first 2 chars and put this value in a variable

Hi i have need of read a file value with cat command and remove first 2character for example cat /sys/class/rtc/day 0x12 Remove char 12 And put this value in a variable is possible with a script thanks for help (6 Replies)
Discussion started by: enaud
6 Replies

2. UNIX for Dummies Questions & Answers

chown: Read-only file system

Hi, I am logged in as super use and want to set owner of a root folder to a specific user. #chown -R user1:group1 /u01 This gives the message: chown: /u01: Read-only file system chown: lost+found: Read-only file system #ls -l drwxr-xr-x 3 root system 256 Mar 21 16:42... (2 Replies)
Discussion started by: shoefiend
2 Replies

3. Red Hat

Read only file system : File show as ? ? ? ?

I have a test system, user which I have my home directory. /home/hansini The files under this directory show as ?--------- ? ? ? ? ? sam.sh ?--------- ? ? ? ? ? DDD I know on the test system OS is corrupt and it is read only file system. If I go to some other... (2 Replies)
Discussion started by: hansini
2 Replies

4. OS X (Apple)

Read-only file system error

My first post :) I deleted all the files within /system/library/startupitems to the trash bin. Now my mac snow leopard won't boot at all. All I got is the gray screen, apple logo and the spinning wheel...just spinning forever. I was able to boot in single-user mode. I'm trying to copy cp command... (14 Replies)
Discussion started by: haxum
14 Replies

5. Shell Programming and Scripting

How to remove last character in a string read from file

Hello, The last character is a comma , I have tried the following: sed -e 's/\,$//' filename-to-read however - there are still commas at the end of each line...:confused: (5 Replies)
Discussion started by: learning
5 Replies

6. SCO

file system not getting mounted in read write mode after system power failure

After System power get failed File system is not getting mounted in read- write mode (1 Reply)
Discussion started by: gtkpmbpl
1 Replies

7. UNIX for Dummies Questions & Answers

/ file system mounts as read only

I have a Netra T1 server running Solaris 8, It was installed by jump start, it does not have a cdrom drive. Recetly it crashed so I rebooted it from >LOM poweron and it came to run level 3, all file systems listed in /etc/vfstab are mounted, but /dev and / root are not writeable though in... (3 Replies)
Discussion started by: Tirmazi
3 Replies

8. UNIX for Dummies Questions & Answers

read only file system

Hi, Has any one worked on IPSO operating system. I have a to add a file to /etc directory. When I create a file it comes up with read only file system. Is there any way of adding a file to this directory, without changing the etc directory parameters. Br, Eugene (1 Reply)
Discussion started by: eugene777
1 Replies

9. UNIX for Dummies Questions & Answers

Read file and remove max length

Hi all, I tried to write a shell to read huge file and eliminate max length record which is wrong generated record. But I get an error remove_sp.sh: line 27: syntax error near unexpected token `else' remove_sp.sh: line 27: ` else $LINE >> REJFILE' My shell is here: #!/bin/sh... (5 Replies)
Discussion started by: mr_bold
5 Replies

10. Solaris

How to remove a ufs file system?

Hello, On a box with Solaris 10 I created a ufs file system and now I need to remove that file system. How do I remove a ufs file system on Solaris 10? Thanks. (5 Replies)
Discussion started by: pmichner
5 Replies

Featured Tech Videos