Linux – Why is the Fedora HD STILL coming up as 127 GB

fedoraformattinghard drivehyper-vlinux

After posting this question, and creating a fixed 700GB disk in Hyper-V, when I mount Fedora 11 to a CD and go to install it only shows 127GB of space to write to.

How can I use all 700GB on the VHD?????

Thanks very much,

EDIT: In response to Cristians answer, I have made a SCSI controller, pointed it at the 700GB VHD and booted, now Fedora doesnt see any drive at all:

What am I doing wrong here???

EDIT 2: If I cannot make an IDE drive thats > 127GB, and I cant boot on the 700GB SCSI, how can I use this space???
If I boot on a small IDE with the SCSI attached, Fedora has no idea that all that space is there. Will this appear after loading the operating system? How hard is it to format a large drive and use it in Hyper-V???

lspci output:

Best Answer

Quoting from an article about Hyper-V (thanks Ryaner):

Virtual hard disk specifications are independent of the bus type used to connect to the virtual machine. However, the bus type does impose a size limitation on virtual hard disks. Virtual hard disks connected via IDE cannot exceed 127 GB. Virtual hard disks connected via SCSI cannot exceed 2040 gigabytes.

So it seems that you'll need to use a SCSI hard disk, instead of an IDE one. You could also try splitting the current hard disk into multiple smaller IDE hard disks.

Example

To create a 100 GB VHD, use something like:

.\VhdTool.exe /create '.\Virtual Hard Disks\SRV-EXCHANGE_Backup.vhd' 107374182400

It will take only seconds to complete.

Output

PS C:\VMStorage> .\VhdTool.exe /create '.\Virtual Hard Disks\SRV-EXCHANGE_Backup.vhd' 107374182400
        Status: Creating new fixed format VHD with name ".\Virtual Hard Disks\SRV-EXCHANGE_Backup.vhd"
        Status: Attempting to create file ".\Virtual Hard Disks\SRV-EXCHANGE_Backup.vhd"
        Status: Created file ".\Virtual Hard Disks\SRV-EXCHANGE_Backup.vhd"
        Status: Set the file length
        Status: Set the valid data length
        Status: VHD footer generated
        Status: VHD footer written to file.
        Status: VHD header area cleared.
        Status: Complete
PS C:\VMStorage>

Linux – Creating a file server – How to use a large VHD file in Hyper-V? (700GB)

I would assume that this is issue with drivers.

However, IDE has same size limit as SCSI on Hyper-V. Usually IDE disks are a LOT easier to use in Linux and that solves problems with visibility in most cases. In your case that is a problem since you use first Hyper-V Server 2008 release.

If you can, I would recommend moving to Hyper-V Server 2008 R2 which will allow you to have big disk on IDE interface and thus avoid any driver issues with Linux and SCSI.

P.S. You can just disconnect already existing VHD and re-attach it as IDE since format is not dependent on interface.

Best Answer

Related Solutions

Hyper-V – Creating a large fixed disk – EXTREMELY Slow

Example

Output

Linux – Creating a file server – How to use a large VHD file in Hyper-V? (700GB)

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