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Old 11-10-2018, 08:43 PM   #1
Odyssey1942
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Trying to install dual boot Win10/Ubuntu Mate 18.04. Need guidance please


I am starting my bi-annual upgrade to the latest LTS (18.04.1) on a Win 10 Home Dell XPS i7 with 16GB ram, but am am a bit out of practice (and tbh have never developed any competence that sticks).

I have put this into "Linux-Software" even though I have only limited experience.Your patience (and simply worded replies) appreciated.

Using a bootable installation USB stick, I have the "Installation Type" screen open and it is showing me the following:

Free Space 1MB
/dev/sda1 efi (size)524MB / (used) 55MB Windows Boot Manager
/dev/sda2 fat32 41/41 [all size/used #'s hereafter are MB]
/dev/sda3 (blank) 134/unknown
/dev/sda4 ntfs 786/313
/dev/sda5 ntfs 989321/98659
Free Space 0MB
/dev/sda6 ntfs 925/438
/dev/sda7 ntfs 8467/7684
Free Space 1MB

I have no idea what all those small sdaX's are, but I would like to keep Win10 available if for some reason I later want to use it, but expect to use UM almost exclusively.

I can see three alternatives:

1) replace the 1T HDD, with a 120GB SSD. I can use approx 60GB for Win 10 OS with a new install and the other half for U Mate 18.04 OS new install, then reformat and split the existing HDD for a data drive for both OS's.

2) do a new Win10 install on the existing HDD as sda but restrict it to say 200GB during the install, and install U Mate as sdb using the balance. This would have the advantage of starting fresh with both.

3) Lastly, I can install UM alongside the existing Win10, which I initially started on, but ran into problems shrinking the Win partition, have spent a lot of time on it already and my current opinion is that this is a distant third choice.

Which (including other alternatives) would you recommend. Any guidance appreciated

Last edited by Odyssey1942; 11-11-2018 at 11:23 AM.
 
Old 11-11-2018, 09:03 AM   #2
BW-userx
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here
Code:
a = primary HDD
b = secondary HDD
etc

a1 = primary HDD first partition
a2 = primary HDD second partition

b1 = secondary HDD first partition

etc...
you can split it up how ever you like, mine for example,

first hdd 250 or 256 GB SSD ( i forget)
second hdd 2TB (reg) HDD

2 hdds split up for multi boot system, sda1 and sda2 are for Windows, the rest are linux, with a small portion for NTFS share between the two, which is sdb7


Code:
NAME    MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda       8:0    0 232.9G  0 disk
├─sda1    8:1    0   549M  0 part
├─sda2    8:2    0  97.1G  0 part
├─sda3    8:3    0  17.6G  0 part
├─sda4    8:4    0     1K  0 part
├─sda5    8:5    0  34.7G  0 part /
├─sda6    8:6    0  30.3G  0 part
├─sda7    8:7    0  32.6G  0 part
└─sda8    8:8    0  20.1G  0 part /media/projects
sdb       8:16   0   1.8T  0 disk
├─sdb1    8:17   0  68.4G  0 part
├─sdb2    8:18   0  29.3G  0 part /home
├─sdb3    8:19   0  29.3G  0 part
├─sdb4    8:20   0     1K  0 part
├─sdb5    8:21   0  29.3G  0 part
├─sdb6    8:22   0   1.5T  0 part /media/data1
└─sdb7    8:23   0 215.1G  0 part /media/ntfs1
mmcblk0 179:0    0  14.5G  0 disk

Last edited by BW-userx; 11-11-2018 at 09:09 AM.
 
Old 11-11-2018, 09:13 AM   #3
RockDoctor
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sda is your 1 TB HDD; sda1 is the first partition, sda2 is the second partition, etc...

Your HDD is more than large enough to accommodate both Windows 10 and Ubuntu. Unless your Win 10 installation is brand new and completely uncustomized, I'd definitely recommend shrinking the Windows partition. Check out this link and in particular, the instructions following, "There seems to be absolutely no need for any third party software."
 
Old 11-11-2018, 11:50 AM   #4
yancek
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Shrinking you largest windows partition from within windows using Disk Management would be the simplest option. Reboot windows after doig this to see that it boots correctly. If this is not a new install of windows, you might want to run disk defragmenter before shrinking the partition.

Ubuntu has documentation on dual booting with windows 10 on an EFI system which you have at the link below.

https://help.ubuntu.com/community/UEFI
 
Old 11-11-2018, 01:32 PM   #5
Odyssey1942
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While reading and researching this, I continue to work on shrinking the HDD and have followed all the guidance I can find, but so far have only shrunk the Win partition to approx 655GB (can't look right now as defrag is running on that computer.) This is just too much to devote to what I expect will be limited use of Win10.

Have thought of another option which is to use the SSD only for Ubuntu Mate and do a clean install of win10 on the HDD after setting up a new partition of approx 200GB for it.

This seems to me to preserve the original HDD for booting Windows and gives all the space on the SDD for UM.

How does this sound? Any obvious problems to those who understand this stuff better than me? Thanks
 
Old 11-11-2018, 03:21 PM   #6
BW-userx
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yeah, defrag could take a few minutes to hours, depending the on the circumstances
 
Old 11-11-2018, 03:25 PM   #7
Odyssey1942
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So far, after approximately 52 hours, have only been able to get the partition down to 628GB (of which 545 is free) and so guess I need to clean reinstall Win 10 on the HDD before trying to install UM 18.04 anywhere.

During a clean install, I assume that the entire disk will be reformated and therefore I have backed up all my data (as well as making a system restore [which may or may not be useful] after reformatting the HDD). Will there be an option in that clean install to make a smaller partition for Windows, and if so, do I need more than 100GB for this?
 
Old 11-11-2018, 03:30 PM   #8
BW-userx
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yeah that is what I'd do if I didn't have any "mission critical" software/data on it, just back up what I remember I think I need then wipe it and start over.

defrag and windows one has to keep up with it else you'll get stuck like you are. at least once a week, if you use it a lot.

Last edited by BW-userx; 11-11-2018 at 03:32 PM.
 
Old 11-12-2018, 12:37 PM   #9
Odyssey1942
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I'm struggling here. I think this is what I need to do, but before I muck everything up, confirmation (or correction) would be much appreciated"

Create a bootable USB with the latest version of Win 10

Boot into USB begin install

If I remember correctly, there will come an option to make a partition for the OS. Given that the HDD will be used mostly for data, and not that often for Windows, what size should I make the OS partition? I'm thinking 100GB. Is that more than is needed for Win 10?

And if that option does not present itself, what software should I use to reformat the HDD and then make the partitions?

Should the Win OS and Win data partitions be NTFS?
 
Old 11-12-2018, 01:55 PM   #10
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You should see a "Custom" install option with windows 10, it should be right after the EULA page. If you use the standard or regular option, it will likely overwrite everything. With the custom option, you should be able to select a partition or free space to use. I would think 100GB would be more than enough for a windows install.
 
Old 11-12-2018, 04:31 PM   #11
Odyssey1942
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Thanks. Have done the install and now doing updates
 
  


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