Install: Build fails with no space left on exFAT drive despite free space #958

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opened 2026-11-15 22:53:21 +00:00 by BeanIssues · 1 comment

BeanIssues commented

2026-11-15 22:53:21 +00:00

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Reported by ℳ. on Discord

What happened

Longshot Launcher 1.0.0 stopped building Nightly 66 (e51e28e9) while reading game files, at 3%, with OSError: [Errno 28] No space left on device writing romfs/Tex/Wood_Deku_TreeRootProp_E_Nrm.bntx.zs (1859496 bytes): 0.0 GB free there, exFAT. The user reported multiple attempts. Explorer showed 96.7 GB free on the SSD, and switching to a non-exFAT/NTFS drive allowed the build to proceed.

Steps to reproduce

Build using an exFAT drive with ample free space. The failure occurred while reading game files; exact setup/reproduction steps are not otherwise known.

System

Windows. Detailed system information was not provided.

Logs and screenshots

Screenshot shows the exact build error and available disk space; a second shows the build progressing after moving to a non-exFAT drive.

Missing information

Please verify whether exFAT is intended to be supported for build output/work files and, if so, reproduce with the launcher/build log and exact drive/build paths. No Windows version, CPU/RAM, or full log was provided.

A related but distinct launcher issue fixed free-space detection at a Windows drive root: Longshot Launcher PR #71. This report concerns an actual ENOSPC write failure on exFAT despite substantial free space shown in Explorer.

Reported by [ℳ. on Discord](https://discord.com/channels/1569849200047427645/1570814629251129454/1570814629251129454) ### What happened Longshot Launcher 1.0.0 stopped building Nightly 66 (`e51e28e9`) while reading game files, at 3%, with `OSError: [Errno 28] No space left on device writing romfs/Tex/Wood_Deku_TreeRootProp_E_Nrm.bntx.zs (1859496 bytes): 0.0 GB free there, exFAT`. The user reported multiple attempts. Explorer showed 96.7 GB free on the SSD, and switching to a non-exFAT/NTFS drive allowed the build to proceed. ### Steps to reproduce Build using an exFAT drive with ample free space. The failure occurred while reading game files; exact setup/reproduction steps are not otherwise known. ### System Windows. Detailed system information was not provided. ### Logs and screenshots Screenshot shows the exact build error and available disk space; a second shows the build progressing after moving to a non-exFAT drive. ### Missing information Please verify whether exFAT is intended to be supported for build output/work files and, if so, reproduce with the launcher/build log and exact drive/build paths. No Windows version, CPU/RAM, or full log was provided. A related but distinct launcher issue fixed free-space detection at a Windows drive root: [Longshot Launcher PR #71](https://git.magicbean.dev/MagicBeanDev/LongshotLauncher/pulls/71). This report concerns an actual `ENOSPC` write failure on exFAT despite substantial free space shown in Explorer.

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2026-11-15 22:53:21 +00:00

BeanIssues commented

2026-11-15 22:53:21 +00:00

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Files from the Discord report:

Files from the Discord report: - [image.png](https://git.magicbean.dev/attachments/cdf6ed8d-e0c8-4791-b168-15b028b10cfa) - [image.png](https://git.magicbean.dev/attachments/6956f5da-9c9d-4ee7-adbf-f1ed69754917)