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Storage Management

FlexKVM uses a TF card (MicroSD) for local storage expansion, supporting file management, virtual CD-ROM, and USB export. The two most common scenarios: sharing an ISO image as a virtual CD-ROM for remote OS installation, and transferring files between the TF card and the target host.

TF Card Requirements

Item Requirement
Card type MicroSD (TF) card
Filesystem FAT32 / exFAT / ext4 / NTFS (exFAT recommended — no 4GB limit)

Installation

The TF card slot is on the side of the device, below the power LED. Insert with metal contacts facing the power LED — push until you hear a click.

Verify: After insertion, the OLED storage icon shows connected. No change? Re-insert or check if the card is working.

OLED showing TF connected

Disk Image Menu

Click the disk image icon in the top bar to open the management interface.

Disk image menu

Icon Meaning
TF card inserted
No TF card
Currently shared to host via USB

Four operations:

Full Disk Sharing

Share the entire TF card as a USB drive — the host can see all partitions.

Select the TF card → click Share.

Full disk sharing

Enable read-only to prevent the host from writing.

Partition Sharing

Share only a specific partition — other partitions are invisible to the host.

Select a partition → click Share.

Partition sharing

Partition Mounting

Mount a partition to browse and manage files on FlexKVM.

Select partition → click Mount → file list, partition size, upload/unmount buttons appear.

Partition mount

Some partition formats may be incompatible with mounting. If it fails, try exFAT.

Single File Sharing

Mount a partition first → check a .img or .iso file → click Share File. The host will recognize it as a virtual CD-ROM.

File sharing

Files larger than 4GB are supported, but must be .img or .iso format.

Safe Removal

Current state What to do
Single file sharing Unshare → Unmount partition → Remove card
Full disk / partition sharing Unshare → Remove card
Mounted but not sharing Unmount partition → Remove card
Inserted but no operation Remove directly

FAQ

TF card not detected? → Check the filesystem. FAT32 and exFAT have the best compatibility.

Shared CD-ROM not recognized by host? → Make sure the file is .img or .iso. Other formats can't be shared as a virtual CD-ROM.

Upload interrupted? → Refresh the page and re-upload. Resume is not currently supported.

OS install failed halfway? → Did you toggle mouse, keyboard, or audio during installation? These actions cause a brief virtual CD-ROM disconnect.

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