this post was submitted on 04 Jul 2026
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Everything with a lock means it’s mounted and in use. sda1, sda2, sda3 and sda4 should be safe to format, however as others have mentioned, booting into a live environment is the best course of action as it lets you freely move or extend partitions.
I suggest finding a thumb drive and flashing Gparted onto it.
The one word of caution here if the bootloader is stored in these partitions you mentioned in which case it could render their system unbootable which would require some fixing. The safest would be like another commenter mentioned to only format the ntfs partition after doing a backup of course.