[DOS] BizHawk crashes on the next session after preserving a high-volume HDD

[MoskovchenkoD]

Summary

BizHawk crashes on the next session after preserving a big HDD (504 Mb and above).

Repro

1. Launch DOS (DOSBox-X) core using any game (CD or floppy image)
2. In the menu bar, select "DOS"
3. Set "Preserve Hard Disk Contents" to True and "Mount Writable Hard Disk Drive" to "504 Mb (FAT16)".
4. Reset the core or re-launch Bizhawk and select a DOS game (repeat point 1)
5. Wait for a while. The core launches in ~25 secs and throws an exception in a few seconds.

I tried typing DOS commands, installing games again and launching games (if those were installed in the initial session), but this exception is still thrown.
I also tried recording Bizhawk movies:

1. In movie 1 from "Power-on (clean)" I install the game, save the movie and exit Bizhawk.
2. In movie 2 from SaveRAM, I try to do... whatever. Even if I manage to launch the game in slow motion, the exception is still thrown.

Note: for smaller HDD volumes (21, 41 or 241 Mbs), this issue doesn't reproduce.

Output

System.InvalidOperationException: Waterbox Error: Callback signaled abnormal failure
   at BizHawk.Emulation.Cores.Waterbox.WaterboxHostNative.ReturnData.GetDataOrThrow() in /src/BizHawk.Emulation.Cores/Waterbox/WaterboxHostNative.cs:line 21
   at BizHawk.Emulation.Cores.Waterbox.WaterboxHost.SaveStateBinary(BinaryWriter bw) in /src/BizHawk.Emulation.Cores/Waterbox/WaterboxHost.cs:line 349
   at BizHawk.Emulation.Cores.Waterbox.WaterboxCore.SaveStateBinary(BinaryWriter writer) in /src/BizHawk.Emulation.Cores/Waterbox/WaterboxCore.cs:line 304
   at BizHawk.Client.Common.ZwinderBuffer.Capture(Int32 frame, Action`1 callback, Action`1 indexInvalidated, Boolean force) in /src/BizHawk.Client.Common/rewind/ZwinderBuffer.cs:line 243
   at BizHawk.Client.Common.Zwinder.Capture(Int32 frame) in /src/BizHawk.Client.Common/rewind/Zwinder.cs:line 61
   at BizHawk.Client.EmuHawk.MainForm.CaptureRewind(Boolean suppressCaptureRewind) in /src/BizHawk.Client.EmuHawk/MainForm.cs:line 4510
   at BizHawk.Client.EmuHawk.MainForm.StepRunLoop_Core(Boolean force) in /src/BizHawk.Client.EmuHawk/MainForm.cs:line 3138
   at BizHawk.Client.EmuHawk.MainForm.ProgramRunLoop() in /src/BizHawk.Client.EmuHawk/MainForm.cs:line 954
   at BizHawk.Client.EmuHawk.Program.SubMain(String[] args) in /src/BizHawk.Client.EmuHawk/Program.cs:line 385

Host env.

• BizHawk 2.10.1 dev build at 236ff74; Win10 Pro 22H2; AMD/Nvidia

Demonstration Video