Jump to content
  • Announcements

    • Allan

      Forum Rules   04/13/2018

      Hello folks! As some things are being fixed, we'll keep you updated. Per hour the Forum Rules don't have a dedicated "Tab", so here is the place that we have our Rules back. New Users Lounge > [READ] - InsanelyMac Forum Rules - The InsanelyMac Staff Team. 
maxell505

Error coming up when going to erase partition.

6 posts in this topic

Recommended Posts

Trying to install OSX on the partition I made in Windows but when I go to the erase tab and make the format MAC OS Extended (journaled) and than click erase, it comes up with an error saying:

 

Volume Erase failed with the error:

 

Couldn't modify partition map.

 

---------------------------------------

 

I think I might have made the partition NTFS when I made it in Windows. Please help. 

Share this post


Link to post
Share on other sites

Partition the HD using the MacOS installer disk utilities. Use GUID option and at least two partitions. One partition for Mac formatted as MACOSJournaled, the other for Windows formatted at FAT32.

 

Install Windows to the FAT32 partition (reformatted to NTFS during installation). Then install MacOS to the 'Journaled' partition.  You will need to install a bootloader such as Chameleon to the Mac partition (unless you want to boot the machine each time using your Mac USB installer).

Share this post


Link to post
Share on other sites

Partition the HD using the MacOS installer disk utilities. Use GUID option and at least two partitions. One partition for Mac formatted as MACOSJournaled, the other for Windows formatted at FAT32.

 

Install Windows to the FAT32 partition (reformatted to NTFS during installation). Then install MacOS to the 'Journaled' partition.  You will need to install a bootloader such as Chameleon to the Mac partition (unless you want to boot the machine each time using your Mac USB installer).

But I already have Windows installed to a partition on my hard drive.

Share this post


Link to post
Share on other sites

Use Parted Magic, erase the partition without formatting, now you can format the unallocated space with Disk Utikity

Share this post


Link to post
Share on other sites

Use Parted Magic, erase the partition without formatting, now you can format the unallocated space with Disk Utikity

Sorry but is there a free option available. I do not want to pay for this program. I have a bootable version of paritition wizard burned to a DVD. Can I use that to do this.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Recently Browsing   0 members

    No registered users viewing this page.

×