It may help to only do defrag operations while entirely off the internet. This was necessary with Windows machines when I worked for the Navy a few years ago.
On Fri, 4 Oct 2019, ?tienne Mollier wrote: > Date: Fri, 4 Oct 2019 15:26:48 > From: ?tienne Mollier <etienne.moll...@mailoo.org> > To: debian-user@lists.debian.org > Subject: Re: disk going bad? or fuser related issues? . . . > > Albretch Mueller, on 2019-10-04: > > Lately I have been noticing the NTFS partition being slower than > > usual: telling me I am not allowed to open that partition and/or the > > OS doing it itself but taking its time (like 5 seconds). The other > > partitions mount just fine, so it doesn't seem to be a hardware issue. > > > > Is that disk partition somehow going bad or there might be something > > else going on? > > I vaguely recall from the previous decade that NTFS is subject > to noticeable performance loss while fragmenting. From time to > time, you may want to run a defragmenter tool on this drive, to > reorder file blocks. > > > root@mrme:~# mount --types ntfs --verbose /dev/sdc1 /media/mrme/NTFS > > Mount is denied because the NTFS volume is already exclusively opened. > > The volume may be already mounted, or another software may use it which > > could be identified for example by the help of the 'fuser' command. > > I've had that kind of behavior in a dual boot context, while the > Windows system kept the partition still mounted even after a > poweroff, in order to boot faster (sic) afterwards. I had a > solution which involved disabling the Fast Boot capability of > the motherboard for one, and second to always use the Restart > button instead of Shutdown, which actually put the machine in > some kind of deep-sleep. Which little luck it may just be that. > > Kind Regards, :) > --
