Recover Files After Installing ChromeOS Flex on a Laptop With a 256GB SSD and 1TB HDD
Installing ChromeOS Flex instead of choosing Try it first is destructive to the physical drive used as the installation target. However, a Dell laptop containing both a 256GB SSD and a separate 1TB HDD does not prove that both disks were erased. Shut the laptop down now and identify each physical drive without reinstalling Windows or writing more data.
That distinction drives this Windows-to-ChromeOS Flex recovery question on Reddit. The user completed the direct install and wants to know whether the previous SSD, HDD, or both were affected. No post-install partition map or disk scan is provided, so it would be unsafe to claim the 1TB HDD was definitely overwritten.
First Identify Which Physical Disk Changed
Google's ChromeOS Flex installation guide states that installing the operating system erases previous data, applications and settings on its target. It also distinguishes this from live-booting the USB installer. The installation warning is serious, but it does not tell us which of this laptop's two physical disks the installer actually selected.
Inspect Without New Writes
- Power down the Dell: Avoid normal ChromeOS Flex startup, OS reinstall, Disk Management initialization and format prompts while data is at risk.
- Identify the 256GB SSD and 1TB HDD individually: A competent technician can inspect their device identity, capacities and partition layouts through a read-only environment or separate computer. C: and D: letters from the old Windows installation are not reliable physical-disk identifiers.
- Check the untouched disk first: If the 1TB HDD still has its previous partitions and files, copy them to a healthy drive and verify opening several files before doing anything else.
What If ChromeOS Flex Overwrote The Windows SSD?
New ChromeOS Flex partitions and installation writes can replace old file-system metadata and file content on the selected disk. On an SSD, discard/TRIM behavior can further restrict recovery. Google warns that files erased by installation are not recoverable through the normal operating-system restore path, so do not promise an undelete result or assume a paid scan can reverse the installation.
If the erased disk still appears at its expected capacity and holds irreplaceable data, a professional can evaluate a read-only image to determine whether any surviving files remain outside overwritten areas. A long scan should not precede identification of the affected physical drive. If the separate HDD was never selected or overwritten, it may need no recovery software at all; ordinary copying from the intact HDD is safer.
Recoverit Hard Drive Recovery is only a conditional option for a stable, detectable disk where original file data remains. It cannot restore blocks overwritten by ChromeOS Flex or reversed by completed SSD TRIM. Decide from the disk evidence, not from the fact that Windows no longer boots.