Missing bootcamp at startup

How did you try?

kosakowski wrote:

I tried by using the slider in the disk utility in the partition tab

i may of inadvertintly earased it

the bootcamp drive and all of its files are still visable in the os side in the finder

You can not resize a Boot Camp partition that way, but you know that now. Remove the partition (use Boot Camp to remove it) and start from the beginning again.

Yes it will,

There may be another way but I do not advise on that route, wait and see if someone can assist you in rebuilding the partition.

Why do you not have a backup, this need not have happened?

Then you have no backup, a poor choice.

I have put out a request for assistance, all you can do is wait, and there is no guarantee of success here.

Take the waiting time to plan a backup strategy for your Windows partition for the future. 🙂

With Windows it's difficult but Windows Backup would have saved your data files, and there are plenty of 3rd party backup programs for Windows. You would still have to reinstall everything else however.

To be clear, I would never entrust important work to Windows running on a Mac unless it was in a VM, if I needed a native installation of Windows I would run it on a PC.

Backup your VM file now. (make a snapshot) once that is done your data at least is safe. Reinstall Windows in Boot Camp, reinstall the applications, export all the VM data to an external drive (FAT32 format) and import to the Boot Camp partition.

I would just the VM from now on, it's safer.

Parallels is an application that runs on OS X which in turn is only looking at the disks's GPT. It's booting Windows from a GPT partition. But when natively booting Windows, the CSM-BIOS Apple uses depends on a different partition scheme called MBR. By resizing in Disk Utility, the MBR was (in a sense) corrrupted. It's more correct to say the hybrid MBR was replaced with a protective MBR, meaning an MBR with only a single entry. Since it lacks an entry for Windows, Windows can't boot.

Soapbox: You say the data is important, took months to produce. But actions speak louder than words, and your actions say "I hate my data, it's completely, utterly useless and I can't wait for it to disappear." So I suggest you change your Windows backup strategy from "my data *****, I really wish I could start over" to something that's compatiable with the importance you say your data has to you.

Since you have access to the data through Parallels, I'd work on a backup plan now, before you do anything else.

Next you can post the results from these two read-only commands and I'll comment on how easy or difficult it might be to fix the problem so you can natively boot again.

sudo gpt -r -v show disk0

sudo fdisk /dev/disk0

Hi Christopher, thanks for responding.