The computer currently has no detected operating systems (trying to install alongside Windows 7)
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My computer is an ASUS M32 series desktop, about five years old, with Windows 7 on it (came pre-installed I believe; it used to be my parents' computer).
I followed a guide to doing a "dual boot" install of Ubuntu here, step by step
https://www.lifewire.com/ultimate-windows-7-ubuntu-linux-dual-boot-guide-2200653
but I'm having problems after booting from the USB (UEFI) and actually installing Ubuntu. In the installation wizard, I got the message in the title of this thread, that it couldn't detect Windows 7 for some reason...
I then went into the 'Something else' option at the bottom and got a table for Installation type, with what I guess are the partitions laid out:
- /dev/sda
- /dev/sda1 ntfs size- 104 MB used- 29 MB
- /dev/sda2 ntfs size- 24666 MB used- 21078 MB
- /dev/sda3 ntfs size- 214880 MB used- 110537 MB
- unusable size- 185199 MB
- /dev/sda4 ntfs size- 575350 MB used- 168 MB
From looking at this and comparing to the sizes of the partitions in the 'Disk Management' tool in Windows (the numbers aren't quite the same but very roughly similar), the part that says 'unusable' above is the part that I allocated for Ubuntu to be installed in. Above that table is a color-coded breakdown of these 'sdas', with the 185.2 GB being the free space, but it shows up at 'unusable' in the table. I think that has to do with the problem , cause in the guides I read, it's actually listed as 'free space' in the table.
Before starting, I shrunk the volume of my main Windows partition with the 'Disk Management' tool and allotted about 172.48 GB of unallocated space (which I guess corresponds to the aforementioned 185.2 GB?). The WIN7 primary partition still has 200 GB and is NTFS. The other partitions are System Reserved- 100 MB, NTFS. These are all described as 'healthy'.
I'm not super savvy when it comes to partitions and the like. I understand the concept but the more you get into it, it can get pretty confusing, and a lot of the solutions I read online were not that clear or applicable to me. Some stuff about MBR and GPT.
The only thing I didn't do in the guide is I forgot to defrag the C: drive before shrinking it, but since I have scheduled weekly defrags, it was only like 3-5% fragmented, and I don't think that would make any difference.
Some answers I read involved doing something with gdisk and fixparts. After pressing w it says it may erase all existing partitions or something, and I'm worried I may lose my Windows data. I do have it backed up to an external HD but it can be kind of a hassle to restore, so I'd rather not risk it.
I don't get why it wouldn't be detecting Windows. Is there something funky with the partitions or free space?
Thanks
dual-boot partitioning system-installation
asked Jun 6 at 17:40
Andrei Antonescu
11
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0
down vote
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My computer is an ASUS M32 series desktop, about five years old, with Windows 7 on it (came pre-installed I believe; it used to be my parents' computer).
I followed a guide to doing a "dual boot" install of Ubuntu here, step by step
https://www.lifewire.com/ultimate-windows-7-ubuntu-linux-dual-boot-guide-2200653
but I'm having problems after booting from the USB (UEFI) and actually installing Ubuntu. In the installation wizard, I got the message in the title of this thread, that it couldn't detect Windows 7 for some reason...
I then went into the 'Something else' option at the bottom and got a table for Installation type, with what I guess are the partitions laid out:
- /dev/sda
- /dev/sda1 ntfs size- 104 MB used- 29 MB
- /dev/sda2 ntfs size- 24666 MB used- 21078 MB
- /dev/sda3 ntfs size- 214880 MB used- 110537 MB
- unusable size- 185199 MB
- /dev/sda4 ntfs size- 575350 MB used- 168 MB
From looking at this and comparing to the sizes of the partitions in the 'Disk Management' tool in Windows (the numbers aren't quite the same but very roughly similar), the part that says 'unusable' above is the part that I allocated for Ubuntu to be installed in. Above that table is a color-coded breakdown of these 'sdas', with the 185.2 GB being the free space, but it shows up at 'unusable' in the table. I think that has to do with the problem , cause in the guides I read, it's actually listed as 'free space' in the table.
Before starting, I shrunk the volume of my main Windows partition with the 'Disk Management' tool and allotted about 172.48 GB of unallocated space (which I guess corresponds to the aforementioned 185.2 GB?). The WIN7 primary partition still has 200 GB and is NTFS. The other partitions are System Reserved- 100 MB, NTFS. These are all described as 'healthy'.
I'm not super savvy when it comes to partitions and the like. I understand the concept but the more you get into it, it can get pretty confusing, and a lot of the solutions I read online were not that clear or applicable to me. Some stuff about MBR and GPT.
The only thing I didn't do in the guide is I forgot to defrag the C: drive before shrinking it, but since I have scheduled weekly defrags, it was only like 3-5% fragmented, and I don't think that would make any difference.
Some answers I read involved doing something with gdisk and fixparts. After pressing w it says it may erase all existing partitions or something, and I'm worried I may lose my Windows data. I do have it backed up to an external HD but it can be kind of a hassle to restore, so I'd rather not risk it.
I don't get why it wouldn't be detecting Windows. Is there something funky with the partitions or free space?
Thanks
dual-boot partitioning system-installation
asked Jun 6 at 17:40
Andrei Antonescu
11
Comments are not for extended discussion; this conversation has been moved to chat.
– Thomas Ward♦
Jun 11 at 14:49
add a comment |Â
up vote
0
down vote
favorite
up vote
0
down vote
favorite
My computer is an ASUS M32 series desktop, about five years old, with Windows 7 on it (came pre-installed I believe; it used to be my parents' computer).
I followed a guide to doing a "dual boot" install of Ubuntu here, step by step
https://www.lifewire.com/ultimate-windows-7-ubuntu-linux-dual-boot-guide-2200653
but I'm having problems after booting from the USB (UEFI) and actually installing Ubuntu. In the installation wizard, I got the message in the title of this thread, that it couldn't detect Windows 7 for some reason...
I then went into the 'Something else' option at the bottom and got a table for Installation type, with what I guess are the partitions laid out:
- /dev/sda
- /dev/sda1 ntfs size- 104 MB used- 29 MB
- /dev/sda2 ntfs size- 24666 MB used- 21078 MB
- /dev/sda3 ntfs size- 214880 MB used- 110537 MB
- unusable size- 185199 MB
- /dev/sda4 ntfs size- 575350 MB used- 168 MB
From looking at this and comparing to the sizes of the partitions in the 'Disk Management' tool in Windows (the numbers aren't quite the same but very roughly similar), the part that says 'unusable' above is the part that I allocated for Ubuntu to be installed in. Above that table is a color-coded breakdown of these 'sdas', with the 185.2 GB being the free space, but it shows up at 'unusable' in the table. I think that has to do with the problem , cause in the guides I read, it's actually listed as 'free space' in the table.
Before starting, I shrunk the volume of my main Windows partition with the 'Disk Management' tool and allotted about 172.48 GB of unallocated space (which I guess corresponds to the aforementioned 185.2 GB?). The WIN7 primary partition still has 200 GB and is NTFS. The other partitions are System Reserved- 100 MB, NTFS. These are all described as 'healthy'.
I'm not super savvy when it comes to partitions and the like. I understand the concept but the more you get into it, it can get pretty confusing, and a lot of the solutions I read online were not that clear or applicable to me. Some stuff about MBR and GPT.
The only thing I didn't do in the guide is I forgot to defrag the C: drive before shrinking it, but since I have scheduled weekly defrags, it was only like 3-5% fragmented, and I don't think that would make any difference.
Some answers I read involved doing something with gdisk and fixparts. After pressing w it says it may erase all existing partitions or something, and I'm worried I may lose my Windows data. I do have it backed up to an external HD but it can be kind of a hassle to restore, so I'd rather not risk it.
I don't get why it wouldn't be detecting Windows. Is there something funky with the partitions or free space?
Thanks
dual-boot partitioning system-installation
asked Jun 6 at 17:40
Andrei Antonescu
11
My computer is an ASUS M32 series desktop, about five years old, with Windows 7 on it (came pre-installed I believe; it used to be my parents' computer).
I followed a guide to doing a "dual boot" install of Ubuntu here, step by step
https://www.lifewire.com/ultimate-windows-7-ubuntu-linux-dual-boot-guide-2200653
but I'm having problems after booting from the USB (UEFI) and actually installing Ubuntu. In the installation wizard, I got the message in the title of this thread, that it couldn't detect Windows 7 for some reason...
I then went into the 'Something else' option at the bottom and got a table for Installation type, with what I guess are the partitions laid out:
- /dev/sda
- /dev/sda1 ntfs size- 104 MB used- 29 MB
- /dev/sda2 ntfs size- 24666 MB used- 21078 MB
- /dev/sda3 ntfs size- 214880 MB used- 110537 MB
- unusable size- 185199 MB
- /dev/sda4 ntfs size- 575350 MB used- 168 MB
From looking at this and comparing to the sizes of the partitions in the 'Disk Management' tool in Windows (the numbers aren't quite the same but very roughly similar), the part that says 'unusable' above is the part that I allocated for Ubuntu to be installed in. Above that table is a color-coded breakdown of these 'sdas', with the 185.2 GB being the free space, but it shows up at 'unusable' in the table. I think that has to do with the problem , cause in the guides I read, it's actually listed as 'free space' in the table.
Before starting, I shrunk the volume of my main Windows partition with the 'Disk Management' tool and allotted about 172.48 GB of unallocated space (which I guess corresponds to the aforementioned 185.2 GB?). The WIN7 primary partition still has 200 GB and is NTFS. The other partitions are System Reserved- 100 MB, NTFS. These are all described as 'healthy'.
I'm not super savvy when it comes to partitions and the like. I understand the concept but the more you get into it, it can get pretty confusing, and a lot of the solutions I read online were not that clear or applicable to me. Some stuff about MBR and GPT.
The only thing I didn't do in the guide is I forgot to defrag the C: drive before shrinking it, but since I have scheduled weekly defrags, it was only like 3-5% fragmented, and I don't think that would make any difference.
Some answers I read involved doing something with gdisk and fixparts. After pressing w it says it may erase all existing partitions or something, and I'm worried I may lose my Windows data. I do have it backed up to an external HD but it can be kind of a hassle to restore, so I'd rather not risk it.
I don't get why it wouldn't be detecting Windows. Is there something funky with the partitions or free space?
Thanks
dual-boot partitioning system-installation
asked Jun 6 at 17:40
Andrei Antonescu
11
asked Jun 6 at 17:40
Andrei Antonescu
11
asked Jun 6 at 17:40
Andrei Antonescu
11
asked Jun 6 at 17:40
Andrei Antonescu
11
11
Comments are not for extended discussion; this conversation has been moved to chat.
– Thomas Ward♦
Jun 11 at 14:49
add a comment |Â
Comments are not for extended discussion; this conversation has been moved to chat.
– Thomas Ward♦
Jun 11 at 14:49
Comments are not for extended discussion; this conversation has been moved to chat.
– Thomas Ward♦
Jun 11 at 14:49
Comments are not for extended discussion; this conversation has been moved to chat.
– Thomas Ward♦
Jun 11 at 14:49
add a comment |Â
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Comments are not for extended discussion; this conversation has been moved to chat.
– Thomas Ward♦
Jun 11 at 14:49