<SOLVED> Multiboot mint, windows 7 and 10.

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37712
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<SOLVED> Multiboot mint, windows 7 and 10.

Post by 37712 »

Hi,

I have windows 7 installed on one HDD and I have Mint installed on another HDD, when installing Mint, it did not detect the windows 7 installation and so it only installed itself with no option to do the multi boot, so I cant boot to my windows anymore unless I do F11 and tell it to boot specifically from that drive, also I will be adding windows 10 on a SSD. I really do need all of these operating systems, so I need to have GRUB be able to allow me to select which os to boot. with linux mint being the default.

Linux mint 19.3 in on /sda
windows 7 on /sdb
cd/dvd drive on /sdc
and windows 10 soon to be installed on /sdd

how can I do this, please help.

Edit:
I have installed grub customizer but I have not been able to figure out how to add windows 7 to it.
Last edited by 37712 on Sat Jul 11, 2020 11:54 pm, edited 1 time in total.
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zcot
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Re: Multiboot mint, windows 7 and 10.

Post by zcot »

Install all the systems in bios/mbr mode, or uefi/gpt mode and grub will do the right thing.
37712
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Re: Multiboot mint, windows 7 and 10.

Post by 37712 »

zcot wrote:
Fri Jul 10, 2020 9:40 pm
Install all the systems in bios/mbr mode, or uefi/gpt mode and grub will do the right thing.
I do have the linux mint 19.3 OS installed on a drive that has gpt and windows 7 on msdos because I could not get windows 7 to install on a gpt drive, I don't know how to install both of them in bios/mbr mode and would very much rather have them both on gpt, any ideas/suggestion on how I can solve this.

also here is some more info:

Code: Select all

karuros@karuros-desktop:~$ lsblk
NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda      8:0    0   3.7T  0 disk 
├─sda1   8:1    0   512M  0 part /boot/efi
└─sda2   8:2    0   3.7T  0 part /
sdb      8:16   0 931.5G  0 disk 
├─sdb1   8:17   0   100M  0 part /media/karuros/System Reserved
└─sdb2   8:18   0 931.4G  0 part /media/karuros/Windows 7
sr0     11:0    1  1024M  0 rom  

karuros@karuros-desktop:~$ sudo parted -l
Model: ATA WDC WD40EZRZ-00G (scsi)
Disk /dev/sda: 4001GB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt
Disk Flags: 

Number  Start   End     Size    File system  Name                  Flags
 1      1049kB  538MB   537MB   fat32        EFI System Partition  boot, esp
 2      538MB   4001GB  4000GB  ext4


Model: ATA WDC WD10EZEX-60M (scsi)
Disk /dev/sdb: 1000GB
Sector size (logical/physical): 512B/4096B
Partition Table: msdos
Disk Flags: 

Number  Start   End     Size    Type     File system  Flags
 1      1049kB  106MB   105MB   primary  ntfs         boot
 2      106MB   1000GB  1000GB  primary  ntfs

karuros@karuros-desktop:~$ sudo fdisk -l
Disk /dev/sda: 3.7 TiB, 4000787030016 bytes, 7814037168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: 8B033847-4938-4BB8-865D-9BC0E786D804

Device       Start        End    Sectors  Size Type
/dev/sda1     2048    1050623    1048576  512M EFI System
/dev/sda2  1050624 7814035455 7812984832  3.7T Linux filesystem


Disk /dev/sdb: 931.5 GiB, 1000204886016 bytes, 1953525168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: dos
Disk identifier: 0x2d033d7a

Device     Boot  Start        End    Sectors   Size Id Type
/dev/sdb1  *      2048     206847     204800   100M  7 HPFS/NTFS/exFAT
/dev/sdb2       206848 1953521663 1953314816 931.4G  7 HPFS/NTFS/exFAT
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zcot
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Re: Multiboot mint, windows 7 and 10.

Post by zcot »

You CAN install Win7 with an uefi/gpt scheme.

And Win10 is going to naturally want that by default too.

That looks like the best route given the situation. I can't offer anything useful on that but it is definitely possible, and you have to do something special you don't just run the installer as is. There are surely many articles about it, and videos.
37712
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Re: Multiboot mint, windows 7 and 10. <SOLVED>

Post by 37712 »

zcot wrote:
Fri Jul 10, 2020 10:34 pm
You CAN install Win7 with an uefi/gpt scheme.

And Win10 is going to naturally want that by default too.

That looks like the best route given the situation. I can't offer anything useful on that but it is definitely possible, and you have to do something special you don't just run the installer as is. There are surely many articles about it, and videos.
Thank you kind Sir, may God bless you with a bunch of kids.

I found out that my iso intallation of windows 7 was not UEFI compatible so I downloaded a new version that was UEFI/gpt compatible, I used gparted to make a new 4 TB HDD into gpt and was able to install windows 7 as uefi gpt and linux detected it and it is all good. Thank you.
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zcot
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Re: Multiboot mint, windows 7 and 10.

Post by zcot »

Ha! That's great! excellent news!
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