Chmod Error Read Only File System
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Unable To Chmod Read Only File System
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Unable To Chmod Hosts Read Only File System
takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Chmod error changing permission read only file system up vote 1 down vote favorite 1 I have three main partitions on my disc /dev/sda: /dev/sda1 2048 117186559 58592256 83 chmod read only by owner Linux /dev/sda2 117186560 128905215 5859328 82 Linux swap / Solaris /dev/sda3 * 128905216 324216831 97655808 7 HPFS/NTFS/exFAT /dev/sda4 324216832 1250263039 463023104 b W95 FAT32 /dev/sda3 is a Windows 7 partition and /dev/sda4 is a FAT32 partition where I keep my data. My problem is that yesterday I can't write on /dev/sda4 and when I tried to change the file permissions I get an error: $ sudo chmod 777 /media/fourat/74A7-A44E/ chmod: changing permissions of ‘74A7-A44E/’: Read-only file system mount output: /dev/sda1 on / type ext4 (rw,errors=remount-ro) proc on /proc type proc (rw,noexec,nosuid,nodev) sysfs on /sys type sysfs (rw,noexec,nosuid,nodev) none on /sys/fs/cgroup type tmpfs (rw) 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) udev on /dev type devtmpfs (rw,mode=0755) devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620) tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755) none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880) none on /run/shm type tmpfs (rw,nosuid,nodev) none on /run/user type tmpfs (rw,noexec,nosuid,nodev,size=104857600,mode=0755) none on /sys/fs/pstore type pstore (rw) systemd on /sys/fs/cgroup/systemd type cgroup (rw,noexec,nosuid,nodev,none,n
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jps2012March 25th, 2012, 05:31 PMI'd like to ask for help with changing permissions on an external drive. In Terminal (bash) I've typed the following command: chmod 777 /media/JPSBackupDrive1 The terminal https://ubuntuforums.org/archive/index.php/t-1946755.html returns: chmod: changing permissions of `/media/JPSBackupDrive1': Read-only file system But I KNOW it's a read-only file system. That's why I'm trying to change it. Does anyone know a way around this problem? The external was first set up for use on a Mac. I'm now using it on an Ubuntu machine (Lucid 10.4). Some of the directories are allowing me full permissions; others are read only. I'm trying to read only give myself full permissions for all directories on the drive (and I'm trying to avoid resetting permissions file by file, because there are are thousands of files--mostly image files--I need to access). Thanks for your help. JPS matt_symesMarch 25th, 2012, 05:32 PMHi Try using sudo. sudo chmod 777 /media/JPSBackupDrive1 Enter your password. It will not be echoed to the screen. Kind regards coffeecatMarch 25th, 2012, 05:45 PMIn case matt-symes only file system suggestion does not help... But I KNOW it's a read-only file system. That's why I'm trying to change it. Does anyone know a way around this problem? To change permissions on a filesystem with chmod, you need it to be mounted read-write. You can't make a read-only fileystem read-write with chmod. You need to change the mount options. However... The external was first set up for use on a Mac. I suspect that the filesystem is the journalled version of HFS+ which can be mounted read-only in Ubuntu. This could be your problem. You need it to be mounted read-write to chmod the directories that are causing you trouble, but you can't mount it read-write. Catch-22. There are ways round this. Just to see if it really is HFS+, post the output of: mount jps2012March 25th, 2012, 05:46 PMI'm wondering if the drive isn't mounted (and I'm also unsure of what "mounted" really means; I see the drive listed in a file browser, and can access some folders and files, but not others). So I tried a command I found on the linux.org forum: mount -t ntfs -o user /dev/hd* /mnt/whateverNote: I replaced "whatever" with the name of my drive. Bash returned the following statement: nt