Differences

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--- other:win10wsl [2022/08/24 17:32] – [Base installation] Added the kernel update step jypeter
+++ other:win10wsl [2022/08/25 16:59] – [Disk space] started improving the section jypeter
@@ Line 31: / Line 31: @@
-==== Computer memory ====
+==== The basics before starting ====
-FIXME
+Once you have verified that your Windows is recent enough, you should also:
+  * Install the [[other:win10apps#windows_terminal|Windows terminal]], because it will be one of the ways to open ''Ubuntu'' terminals, once ''Ubuntu'' is installed
+  * Have at least some basic knowledge of Linux...
+    * Get some [[other:newppl:starting#useful_documentation_for_beginners|basic Linux documentation]] if required
+==== Computer CPU and memory ====
-==== Disk space ====
+Contrary to other virtual machines, WSL is well integrated with the Windows operating system and the hardware drivers and has a **low default CPU and memory footprint**!
+  * You should be able to //play// with WSL even with 8 Gb of RAM, but 16 Gb is recommended
+  * Of course, depending on what you need to do on your computer, a better processor will always help
+  * WSL+Ubuntu will use more CPU and RAM if you use it for running CPU and/or memory intensive processes! As would be the case with any Windows application... :-)
+==== Disk usage ====
+=== Overview ===
+  * ''WSL'' is part of the Windows operating system and will be installed (and updated) on ''C:\''
+  * The Linux installation(s) will be installed (and updated) on ''C:\''
+    * They can only be relocated to other partitions afterwards
+  * => We should **start with at least 10 Gb of free space on ''C:\''** (but more space is always better and safer)
+    * The initial installation will not use much space (2-3 Gb), but we always need space on ''C:\'' for other applications and Windows maintenance (temporary files, updates, ...)
+=== How does it work? ===
+WSL+Linux seems to use a combination of actual Windows files/folders and ''ext4'' Linux partitions stored in ''.vhdx'' ([[https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-vhdx/83f6b700-6216-40f0-aa99-9fcb421206e2|Dynamic Virtual Hard Disk]]) files. The Linux disk (of type ''ext4'') is stored in a single ''some_name.vhdx'' Windows file that will automatically grow until it reaches a predefined maximum size of 256 Gb (if there is enough space on the Windows disk...)
+  * Check [[https://docs.microsoft.com/en-us/windows/wsl/vhd-size|Expand the size of your WSL 2 Virtual Hard Disk]] if you need more than 256 Gb
+  * Check the following threads if you want to reduce the size of the ''vhdx'' file:
+    * [[https://superuser.com/questions/1606213/how-do-i-get-back-unused-disk-space-from-ubuntu-on-wsl2|How do I get back unused disk space from ubuntu on wsl2?]]
+    * [[https://github.com/microsoft/WSL/issues/4699#issuecomment-1136319012|WSL 2 should automatically release disk space back to the host OS]]
+      * [[https://docs.microsoft.com/en-us/powershell/module/hyper-v/optimize-vhd?view=windowsserver2019-ps|Optimize-VHD]]
 <code>stdu@sadira034:~$ ls -lh /mnt/c/Users/jypeter/AppData/Local/Temp/swap.vhdx
@@ Line 61: / Line 91: @@
 -rwxrwxrwx 1 root root 2.6G Aug 24 15:24 /mnt/c/Users/jypeter/AppData/Local/Packages/CanonicalGroupLimited.UbuntuonWindows_79rhkp1fndgsc/LocalState/ext4.vhdx
 </code>
+<code>stdu@sadira034:/usr/lib/wsl/drivers$ df -h | grep drivers
+drivers         472G  116G  356G  25% /usr/lib/wsl/drivers
+stdu@sadira034:/usr/lib/wsl/drivers$ du -sh /usr/lib/wsl/drivers
+.1G    /usr/lib/wsl/drivers
+stdu@sadira034:/usr/lib/wsl/drivers$ du -sh /mnt/c/Windows/System32/DriverStore/
+.1G    /mnt/c/Windows/System32/DriverStore/</code>
 FIXME