Will there be problems installing a second Ubuntu OS to an existing Win10?

Question

linux

I welcome everyone.
There was a desire to put Ubuntu as a second system, with the possibility of moving completely to it later. But the laptop already has WIndows 10 , 50 gigabytes are free on the disk, there is only one disk. Surely there is someone who was in a similar situation and put two axles, I ask for advice and recommendations on how best to do it as painlessly as possible.
Specific questions I'm interested in:

1. Will 30 gigabytes be enough for Ubuntu (to leave Windows 20 at least)? On offsite they write what is needed from 20, but I would not want the system to swear that the places are back to back. Soft and all infa (source codes) occupy 3-4 giga maximum.
   
2. Do I understand correctly that if I divide the disk into two logical ones , then in Ubuntu I will not see Windows files, because of the file system, and from Windows, Ubuntu files?
   
3. Is it possible to change the size of a logical disk after partitioning and installation without formatting , if I suddenly allocate 30GB, but they are not enough, will it be possible to increase the size without losing data ?
   
4. Well, the most important question, if I later decide to get rid of winodws and completely stay on ubuntu , will I have to rearrange it or will it be possible to remove the logical disk and reunite the disk into one?
   

The poor work of the docker in Windows encourages such cases.

Share your experience, thanks for the answers)

Answer 1

Well, with Linux there will be problems for sure.
Yes.
Windows files will be visible from Linux , but not from Windows without installing the ext4 driver.
Yes. A boot disk with GParted, for example, will save the father of Russian democracy.
Don't decide. But it will be possible to remove the disk and merge it too.

Answer 2

There will be problems. Simply because when using two pistols that you do not know how to handle, the chance of shooting yourself in the foot increases by a factor of two.
1. at first, probably enough.
2. after installation you will not see. but mutual support of file systems is both there and there. you just need to set it up.
3 and 4. you can install ubuntu immediately on LVM

Answer 3

1. At 30 GB, Ubuntu will get up. But for work it is clearly not enough. My projects are also quite small, but, for example, I regularly pull something from github to study or build with my own parameters. In addition, there are several VMs in both Windows and Ubuntu. All this eats up disk space very well.
Before installing Linux, I stuck a tray for the second disk (hdd caddy) instead of DVD into the laptop, and, accordingly, the second disk is the same. Now both operating systems have enough disk space.
2. From Ubuntu, Windows sections are visible "out of the box", you can both write and read. In the opposite direction - everything is much worse. At one time, I used ext2fs on Win7, it worked fine, but now it didn’t start on Win10. Didn't really understand. I tried a few more options - the same did not grow together. While I'm around.
3. Didn't try - still 2 systems in the laptop. But theoretically it is possible, only you need to use not the built-in tools, but boot from some live media and use something like Acronis Disk Director or PartionMagic, which work fine with most file systems.
4. No need to rearrange. From Linux (or from live media from step 2), kill the Windows partitions and expand the Linux ones, or make a new partition and mount it.

Answer 4

As colleagues described above, there will be problems. Even if everything is done right. For example, updating Windows can overwrite the bootloader. I advise you to put Ubuntu in a virtual machine for a start.

Answer 5

1. A freshly installed old woman Ubuntu 14 (they asked for 10 in general, but didn’t get up on a new computer: D) took 4.5 gigs. But it won't be enough to work.
2. No. Bubunta automatically mounts Windows disks, although I do not advise changing anything from under bubunta to Windows, but you can easily read it. Windows will not see bubunta without installing firewood on Ext4 (in theory, you can find it). But it will not be a logical disk, but a separate partition, and not just one, but several - at least /boot, / and swap
3. You can. But right away it will be necessary to dance with LVM - /boot cannot be put there, but / - completely. But how to manually create LVM volumes in the "especially intelligent" bounty installer - I still don't understand, most likely the same as in gent - partition via GParted, volumes via pvcreate/vgcreate/lvcreate.
4. I do not recommend for all my dislike for Windows. For the work of a bubunt (like any other linux) is suitable. For entertainment, no, except that you have a purely working car. And so - of course it is possible, only it will be impossible to reunite them without formatting - that is, without formatting the Windows partition, of course.