# Prepare an older database for the current release

Current releases start from the database of 1.0.0-rc.1 and do not hold the 0.x migrations. Use this procedure when your database is older than 1.0.0-rc.1. The [database prerequisites](/next/admin/compatibility-policy.md#database-baseline-prerequisites) define the minimum upgrade history.

## Before you start

1.0 supports only the [Helm chart](/next/admin/compatibility-policy.md#supported-deployment). A Compose installation must first move to the chart:

1. Upgrade the Compose installation to `0.95.0`.
2. Move that version to the chart, as [Move from Compose to the Helm chart](/next/admin/compose-to-kubernetes.md) describes.
3. Apply `0.95.1` and install its reconciler tooling.

## Reach the baseline

1. Install 1.0.0-rc.1 with its signed image lock and its [versioned upgrade instructions](https://github.com/hephaestus-build/Hephaestus/blob/v1.0.0-rc.1/docs/admin/upgrade-to-1-0.mdx). These instructions own the stopped cutover to the database baseline.
2. Run that release until its upgrade is complete.
3. Upgrade to the target release, as its [upgrade guide](/next/admin/upgrade.md) describes.

## Check that it worked

1. Read the log of the migration Job of the target release. The migration completes. If the database has not reached 1.0.0-rc.1, the migration stops before it writes anything. Its message names the release to install.