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I have an NTFS partition and cannot write to it. This partition was created by cfdisk with FS ID 07 (HPFS/NTFS). This is the ID windows XP writes in the partition table. The partition was formatted by the XP installer. Once within XP, I chose to make all files private (other than the adm no user can access them).
Now in linux (Slack 12.0) I cannot mkdir or cp on the NTFS mounted partition, although
/dev/hdaa4 on /hdaal type ntfs (rw)
# ls -ld /hdaal
drwx------ root root 4096 /hdaal/
# mkdir /hdaal/foo
mkdir: cannot create directory '/hdaal/foo'. Operation not permitted
Then I searched LQ and found this post, which made me look into the /extra/PACKAGES.TXT and I found the ntfsprogs package, which supposedly contains ntfsmount. To my great deception it does not, as looking in /var/log/packates/ntfsprogs-1.13.1-i484-1 shows. But there is the manual, which says its a module:
ntfsmount is a FUSE module that rely on libntfs. You need FUSE to com-
pile it, xattr is recommended, but not mandatory.
And contrary to the other programs in the package, it speaks about compiling.
But I doubt I need this package, which nonetheless I installed, given that so many people has linux and windows in their machines, that it seems a little weird mount can't mount in such a way that I can write. The mount manual does not, however, mention any special circumstance when a file system can't be written to, and nothing special in the options for NTFS.
So, the question I do is: Do I have to rely on some /extra directory package (CD 3) or have I the means to write to an NTFS file system, given that I have done a full instalation (in slack 12.0 installing all packages from CDs 1 and 2 is considered a full install).
The Linux kernel is unable to write to NTFS volumes, it can only mount them in read-only mode. You haven't done anything wrong, this is just a limitation of the kernel.
If you want to get read/write access to NTFS, you need to use NTFS-3G, which should already be installed (it is in the "A" package set). You use the "ntfs-3g" command more or less like the normal mount command, just give it the device node and where you want to mount it.
Thank you, Lirey. I have learned ntfs-g3 can charge the CPU up to a hundred per cent in old machines like mine. I always asked the winXP installer to use FAT32. This time, in a new installation, I decided in favor of NTFS, which was a mistake, as I now see, because then I have no comunication between ext2 and winXP.
Luckily, I have a large empty partition, which now I'll format in FAT32, and everything I create with XP I'll put it in that partition.
At equal CPU/DMA speeds, which makes file I/O faster? FAT32 or NTFS? Or for that matter, ext2 or ext3?
I didn't pay attention on CPU use by ntfs-3g before, but I just tried to mount ntfs volume with using ntfs and ntfs-3g and took a look on CPU use while copying big file from ntfs volume to my home directory and CPU use was almost the same, even it was a bit less for ntfs-3g.
So maybe just check if you have ntfs-3g support, and if CPU use will be acceptable for you. You can try to use ntfs-3g by mounting ntfs partition as root.
mount -t ntfs-3g /dev/sdc1 /mnt/hdd
Just change device and mount point according to your system.
I really don't see how NTFS-3G could have such a performance issue, especially on a machine that fast. I've run NTFS-3G on my router which has a 400 MHz CPU and 32 MB of RAM...so I'm not sure what you are worried about.