Member Avatar for rickw57

Hi all, I would like to replace the 400GB HDD in my Toshiba A350 with a 1TB drive. The existing drive is HDD 2H41, I've found a Toshiba 1TB internal HDD 2K11. My question is how do I find out if the drive is compatible with and will just slot straight into my laptop?

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  • Latest Post Latest Post by Master Rattley
paulchristensen919 commented: hat about a dv6000 +0

Dani AI

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Useful checklist and practical tips to complement the points raised by and . The short answer is: a same‑interface 2.5" drive often fits, but confirm three things before buying or installing — interface, physical fit, and BIOS/OS support.

  • Interface: verify whether the laptop uses SATA or IDE (PATA). Physically a SATA laptop drive will have a small 7‑pin data plus 15‑pin power connector; IDE/PATA laptop drives use the wider 44‑pin style. If the connector doesn’t match, the drive will not plug in.
  • Physical fit: most laptop drives are 2.5" wide, but thickness varies (7mm, 9.5mm, 12.5mm). Check the replacement drive’s height specification and the laptop’s service manual or measure the original drive. Some high‑capacity drives are thicker and may need a spacer, different caddy, or simply won’t fit.
  • BIOS/OS limits: modern laptops/controllers support large drives, but very old systems had 28‑bit LBA limits (the ~137GB barrier). A 1TB drive will work with MBR partitioning (MBR supports up to ~2TB); GPT is only needed above that and may require UEFI to boot.

Practical steps and common pitfalls:

  • Back up everything first. Decide clone vs fresh install. If cloning, use a reliable tool that copies hidden/recovery partitions.
  • Keep the BIOS SATA mode (IDE vs AHCI) the same during cloning; changing it afterward can prevent Windows from booting unless drivers/registry are adjusted.
  • If the drive isn’t detected after install, check BIOS detection first, test the drive in an external USB‑SATA adapter, and run repair utilities to fix bootloader/partition flags if needed.

If still unsure, compare the existing drive’s connectors/specs or consult the laptop service manual before purchase.

Member Avatar for Master Rattley

-__- if it's a Toshiba Laptop Hard drive, it will fit.

Member Avatar for rickw57

Thank you Master, I will purchase the drive with confidence.

Member Avatar for Master Rattley

No worries :)

Member Avatar for Master Rattley

unless of course, your looking between SATA and IDE but i'm sure you know the difference??

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