86 lines
3.2 KiB
Plaintext
86 lines
3.2 KiB
Plaintext
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# Mounting partitions with systemd
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I had a problem: every time my Windows have a big update, it locks a specific partition that I use to share files between Windows and Linux. After the update, I wasn't able to boot Linux again, as fstab could not mount it.
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To avoid using a pen drive or booting any other way just to get my Linux working again, I removed the partition from fstab.
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It worked, but I didn't want to manually mount it on every boot. Worst than that: Dropbox app synchronize on that partition. It means that on every single boot it raised an error message that my files were moved. It was definitely not a good way to solve it.
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My new solution: create a script to mount the partition and run it at boot. Any error here would not stop my Linux from booting and I would still have it working by the time I logged in after boot. But, where is the best place to run a root script at startup? Of course, systemd! A simple service running a script should do the trick.
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Well, with a simple search I found out something even better: systemd can mount partitions using systemd.mount!
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## How to mount a partition with systemd
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To keep it simple, I am going to explain, step by step, the basic usage of systemd.mount with only the options I used myself.
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1. Create a .mount file on /etc/systemd/system/ (I will get back at this point later, for now, just use any name for the file)
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2. Inside the file you should specify the following attributes:
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* Description= A description of your mount script
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* What= The partition that will be mounted
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* Where= Directory where the partition will be mounted
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* Type= The partition file type (ext4, ntfs, fat32 etc)
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* Options= Mount options
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* WantedBy= or RequiredBy= Unit dependencies. It's used by the enable and disable commands of the systemctl
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3. Now comes the tricky part: you have to name your .mount file accordingly with your Where= statement. So to mount it on /run/media/bruno/Multimedia you have to name it run-media-bruno-Multimedia.mount
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4. It's time to test it:
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```
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$ systemctl daemon-reload
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$ systemctl start run-media-bruno-Multimedia.mount
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```
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To check the unit status, you can run systemctl status run-media-bruno-Multimedia.mount
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If everything is working fine, just enable it: systemctl enable run-media-bruno-Multimedia.mount and you are good to go.
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## My mount script
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```
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/etc/systemd/system/run-media-bruno-Multimedia.mount
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[Unit]
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Description=Mount Multimedia out of fstab
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[Mount]
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What=/dev/disk/by-label/Multimedia
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Where=/run/media/bruno/Multimedia
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Type=ntfs
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Options=defaults
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[Install]
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WantedBy=multi-user.target
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```
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## Explaining the attributes
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### Description=
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Just a description of you .mount script.
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### What=
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The partition itself. You can specify it by name, path or UUID.
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Examples:
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* /dev/sdb2
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* /dev/disk/by-label/Multimedia
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* /dev/disk/by-uuid/bcebcc2e-3a07-48d8-bd3c-e4eaf98fafc5
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### Type=
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The easiest one after description: the file type of the partition. If you are trying to mount a Windows partition, it will probably be ntfs. If it is a Linux partition, it will probably be ext4.
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### Options=
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Partition options, the same used on fstab.
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### WantedBy=
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I used multi-user.target to start in multi-user runlevel.
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=> /blog/ Back
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