> ## Documentation Index > Fetch the complete documentation index at: https://docs.sfcompute.com/llms.txt > Use this file to discover all available pages before exploring further. # Hard reboot instance > Hard resets a running guest without a graceful shutdown. The instance stays on the same host and retains its disks, identity, and network configuration. Unsaved data can be lost. Returns the ID of the instance.reboot_requested activity event. The instance.rebooting event means the reset has started; it does not mean the guest has finished booting. Rejected requests produce instance.reboot_rejected. Pending requests continue to block new reboots if the instance stops responding. ## OpenAPI ````yaml /openapi.json post /v2/instances/{id}/reboot openapi: 3.1.0 info: title: sfc-api description: >- SF Compute API. Routes under /v2 are stable; routes under /preview/v2 are public preview - subject to change. version: 0.1.0 servers: - url: https://api.sfcompute.com security: - bearer_auth: [] tags: - name: Limits description: Account limits and current usage. - name: Account description: The authenticated account and logged-in user. - name: Pools description: A bucket of owned compute balance over time. - name: Orders description: >- Place orders targeting a capacity to increase your reserved compute balance during some time period. - name: Instance Templates description: Reusable instance configuration. - name: Images description: Custom machine images for instances. - name: Roles description: TOML-based permission role definitions. - name: Grants description: Bind principals (users or tokens) to roles on a workspace. - name: Tokens description: Workspace-scoped API tokens. - name: Instances description: Spin up instances in a capacity to use your available compute. - name: Instance SKU Catalog description: Browse available instance SKU property definitions. - name: VPCs description: Isolated networks with routed subnets within one availability zone. - name: Subnets description: Private networks for instance-to-instance communication within a zone. - name: Procurements description: Market automations that maintain capacity by placing buy/sell orders. - name: Users description: Read-only access to users within the caller's organization. - name: Workspaces description: Resource containers scoped to an account. - name: Permissions description: Inspect what the caller is allowed to do. - name: Billing description: Billing profile, contacts, and auto top-up settings. - name: Faults description: Report problems with your resources. - name: InfiniBand Partitions description: Isolated InfiniBand networks for groups of instances. - name: Orderbook description: >- Read-only orderbook visibility: bid/ask spread, depth, open and filled orders, and historical fills, keyed on hardware requirements + delivery window. - name: Orders description: >- Estimate an order before placing it: filled price, fee, and operational notices. paths: /v2/instances/{id}/reboot: post: tags: - Instances summary: Hard reboot instance description: >- Hard resets a running guest without a graceful shutdown. The instance stays on the same host and retains its disks, identity, and network configuration. Unsaved data can be lost. Returns the ID of the instance.reboot_requested activity event. The instance.rebooting event means the reset has started; it does not mean the guest has finished booting. Rejected requests produce instance.reboot_rejected. Pending requests continue to block new reboots if the instance stops responding. operationId: reboot_instance parameters: - name: id in: path required: true schema: type: string description: >- A resource path like 'sfc:instance:acme:prod:my-instance' _or_ an ID. Resource paths are human-readable but not stable - they change when resources are renamed or moved. IDs are stable and permanent. examples: - inst_k3R-nX9vLm7Qp2Yw5Jd8F pattern: >- (inst_[0-9a-zA-Z_-]{1,21})|(sfc:instance:[a-zA-Z0-9._-]+(:[a-zA-Z0-9._-]+){2,2}) - name: Idempotency-Key in: header description: >- Optional key scoped to this instance. Reusing an accepted key returns 202 with the same request ID without scheduling another reboot. Use a new key for each new reboot. required: false schema: type: - string - 'null' responses: '202': description: Reboot request accepted. content: application/json: schema: $ref: '#/components/schemas/v2.RebootInstanceResponse' '400': description: Malformed request parameters or body. content: application/json: schema: $ref: '#/components/schemas/BadRequestError' '401': description: Unauthorized. content: application/json: schema: $ref: '#/components/schemas/UnauthorizedError' '403': description: Forbidden. content: application/json: schema: $ref: '#/components/schemas/ForbiddenError' '404': description: Instance not found or already terminated. content: application/json: schema: $ref: '#/components/schemas/NotFoundError' '409': description: Another reboot is pending for this instance. content: application/json: schema: $ref: '#/components/schemas/ConflictError' '422': description: The instance is not running. content: application/json: schema: $ref: '#/components/schemas/UnprocessableEntityError' '429': description: >- Rate limit exceeded. Retry after the interval indicated by the rate-limit response headers. content: application/json: schema: $ref: '#/components/schemas/RateLimitedError' '500': description: Internal server error. content: application/json: schema: $ref: '#/components/schemas/InternalServerError' '503': description: Reboot is temporarily unavailable for this instance. content: application/json: schema: $ref: '#/components/schemas/ServiceUnavailableError' components: schemas: v2.RebootInstanceResponse: type: object required: - object - request_id properties: object: type: string const: instance_reboot default: instance_reboot readOnly: true request_id: type: string description: ID of the instance.reboot_requested activity event. BadRequestError: type: object required: - error properties: error: type: object required: - type - message properties: type: type: string const: invalid_request_error default: invalid_request_error message: type: string x-speakeasy-error-message: true details: type: array items: $ref: '#/components/schemas/ErrorDetail' UnauthorizedError: type: object required: - error properties: error: type: object required: - type - message properties: type: type: string const: authentication_error default: authentication_error message: type: string x-speakeasy-error-message: true ForbiddenError: type: object required: - error properties: error: type: object required: - type - message properties: type: type: string const: forbidden default: forbidden message: type: string x-speakeasy-error-message: true NotFoundError: type: object required: - error properties: error: type: object required: - type - message properties: type: type: string const: not_found default: not_found message: type: string x-speakeasy-error-message: true ConflictError: type: object required: - error properties: error: type: object required: - type - message properties: type: type: string const: conflict default: conflict message: type: string x-speakeasy-error-message: true details: type: array items: $ref: '#/components/schemas/ErrorDetail' UnprocessableEntityError: type: object required: - error properties: error: type: object required: - type - message properties: type: type: string const: unprocessable_entity default: unprocessable_entity message: type: string x-speakeasy-error-message: true details: type: array items: $ref: '#/components/schemas/ErrorDetail' RateLimitedError: type: object required: - error properties: error: type: object required: - type - message properties: type: type: string const: rate_limited default: rate_limited message: type: string x-speakeasy-error-message: true InternalServerError: type: object required: - error properties: error: type: object required: - type - message properties: type: type: string const: api_error default: api_error message: type: string x-speakeasy-error-message: true ServiceUnavailableError: type: object required: - error properties: error: type: object required: - type - message properties: type: type: string const: service_unavailable default: service_unavailable message: type: string x-speakeasy-error-message: true ErrorDetail: type: object required: - code - message properties: field: type: - string - 'null' description: The field that caused the error (for validation errors) code: type: string description: Specific error code for this detail message: type: string description: Human-readable error message securitySchemes: bearer_auth: type: http scheme: bearer bearerFormat: JWT description: >- Create an API token using `sf tokens create` or at https://sfcompute.com/dashboard/tokens. ````