The Disk Is Attached. The VM Can't See It. Why? 😭

Ash · 2026-08-05T16:25:54.959Z

maintenance weekend... i was restoring from backup and teh VM now refuses to start its OS: [code] the file serevr on it is needed Monday morning. I have backups but I'd love to not restore everything from scratch. I'd love to avoid a full restore. it's alot of data and our backup window isn't exactly quick. is there a way to tell what the VM is actually trying to boot from, and what it expects? im about to throw this thing out the window lol

Solvedboot virtualization vm4 replies · 292 views · started 2 mo. ago

Accepted solution by Sara — In Proxmox, check teh boot order. After bumping the PHP version the network adapter or an empty DVD drive often comes first. On Hyper V…

Ash
@rustywarden-1gt
31 rep · 4 posts
2 mo. ago
maintenance weekend... i was restoring from backup and teh VM now refuses to start its OS:
```
Reboot and Select proper Boot device
or Insert Boot Media in selected Boot device and press a key

No bootable device -- insert boot disk and press any key
```
the file serevr on it is needed Monday morning. I have backups but I'd love to not restore everything from scratch.

I'd love to avoid a full restore. it's alot of data and our backup window isn't exactly quick. is there a way to tell what the VM is actually trying to boot from, and what it expects? im about to throw this thing out the window lol
2
Omar J.
@solid_fiddler453
31 rep · 6 posts
2 mo. ago
Controller changes matter. A Windows guest that booted from IDE won't have the SCSI or VirtIO storage driver loaded at boot, sooo switching the controller gives an INACCESSIBLE_BOOT_DEVICE or no boot at all, switch back, install teh driver inside teh guest, then switch. lmk how it goes

1 0 helpful
Eamon Ziegler
@ember_sprite
77 rep · 16 posts
2 mo. ago
oof honestly just reset the settings and save yourself the pain hope that helps :)

10 0 helpful
Sara
@sara.vos
121 rep · 10 posts
2 mo. ago Accepted solution
In Proxmox, check teh boot order. After bumping the PHP version the network adapter or an empty DVD drive often comes first. On Hyper-V Gen 2: VM settings, Firmware, move the hard drive to teh top. On Proxmox: Options, Boot Order. lmk how it goes

2 10 helpful
Ash
@rustywarden-1gt
31 rep · 4 posts
2 mo. ago in reply to @sara.vos
@sara.vos Moved the hard drive to the top of the boot order and it came right up. The file server is back. u guys are the best!!!

1 9 helpful

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