mdadm

Thanks Igor for answering to question 2, but questions 1 and 3 remain unanswered. Question 1 is related to command line 7zip (Linux has it's temp folders in /tmp, /var/tmp, MacOS - echo $TMPDIR).

I have some questions about usage temp folder by 7-zip: Is 7zip console use temp folder for any operation on Windows/Mac/Linux? For what operations 7-zip is using temp folder? What will happen when empty space in temp folder will end when 7-zip will be using it, for example: a) 7-zip will open big archive (but didn't end this operation) and temp and partition space will also end? b) 7-zip will open big archive (and end this operation), but will be updating this archive and temp and partition space...

Default compression algorithms used by 7-Zip are: - zip: deflate (zip may be compressed by not standard algorithm ppmd - good for text files) - 7z: lzma or lzma2 - tar: alone don't use any compression, it just group directories and folders in uncompressed archive, but may be in variants: - tar.gz or tgz: tar archive compressed by gzip - tar.bz or tbz: tar archive compressed by bzip2 - tar.xz or txz: tar archive compressed by xz (lzma or lzma2) - tar.*, etc.: tar archive may be compressed by any compressor:...

Nevermind: I found solution what I was looking for: 7z l /dev/sdb1 | less 7z e /dev/sdb1 '-ir!dir/file' 7z e /dev/sdb1 '-ir!dir/*' /dev/sdb1 is not mounted! I wonder if it works for APFS, but I won't check - I don't have disk with that fs. Update: Ok, this also works and is simplier: 7z e /dev/sdb1 'dir/file' 7z e /dev/sdb1 'dir/*' Thanks Igor for your effort!

Nevermind: I found solution what I was looking for: 7z l /dev/sdb1 | less 7z e /dev/sdb1 '-ir!dir/file' 7z e /dev/sdb1 '-ir!dir/*' /dev/sdb1 is not mounted! I wonder if it works for APFS, but I won't check - I don't have disk with that fs.

I know how to view directories and files on device by command run as root: "7zz l /dev/sda | less", but how to extract from command line single file or directory containing file(s) from device with filesystem supported by 7-zip (like ext4) but which can not mounted on Linux?

Leave powershell, work in cmd.exe.

Do in cmd: "7z.exe l archive" to see if there is something interesting (I believe that it does not write anything to temp). Install some RamDisk program, create ramdisk, asign drive letter and extract that archive to that ramdisk through cmd command or in gui, but don't do drag-drop to extract. as it extract temporary to temp.