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Disk Conversion MBR/GPT

Need to switch to GPT for disks over 2 TB support, UEFI Windows installation or vice versa — convert GPT to MBR for legacy system compatibility? Our service performs safe disk conversion MBR ↔ GPT in Khmelnytskyi. We use proven methods without data loss (MBR2GPT, specialized software), check BIOS/UEFI compatibility, fix boot issues after conversion. Work with HDD, SSD (SATA, M.2, NVMe) of all brands: Samsung, WD, Seagate, Kingston, Crucial. Home or office visit, free disk and system diagnostics, warranty on all performed work. Fast, safe, professional! Order disk conversion MBR/GPT online or by phone right now!

200 UAH
Disk Conversion MBR/GPT
MBR to GPT Disk Conversion | Grade Khmelnytskyi

What the Service Includes

The MBR to GPT conversion service (and reverse) covers safe partition style change with maximum data and bootability preservation. Initial diagnostics include: current style check (MBR or GPT), disk capacity, partition count and type (system, EFI, MSR, data), file system (NTFS, exFAT), Windows bootloader presence (BCD), BIOS/UEFI motherboard compatibility. Critical data backup (boot sector, BCD, EFI partition) is performed to separate media. MBR → GPT conversion is non-destructive using tools like MiniTool Partition Wizard, AOMEI Partition Assistant Pro, EaseUS Partition Master, DiskPart (Microsoft mbr2gpt.exe), or specialized utilities that preserve data. During conversion an EFI partition (100–300 MB, FAT32) is created, bootloader moved to the new EFI partition, BCD updated, and UEFI boot correctness verified. Reverse GPT → MBR follows similarly with EFI/MSR partition removal and bootloader transfer to MBR. Post-conversion includes: system boot verification, full chkdsk /f /r scan, speed test (CrystalDiskMark), SMART monitoring (CrystalDiskInfo), partition integrity check, load testing. In Khmelnytskyi we also configure BIOS/UEFI (disable Legacy/CSM, enable Secure Boot if needed), fix boot errors (bootrec /fixmbr /fixboot /rebuildbcd), and optimize partition placement. The service often combines with software installation, drive replacement, or data recovery after failed self-conversion attempts.

When the Service is Needed

MBR to GPT conversion is required when standard MBR limits disk usage or prevents modern UEFI features. Main cases: disk larger than 2 TB shows only 2 TB (remainder "unallocated"), Windows 11 installation (requires GPT + UEFI), new NVMe SSD installation at full speed (PCIe Gen4/Gen5 needs GPT), switch from Legacy BIOS to UEFI boot for faster startup (5–15 seconds gain), Secure Boot usage, support for more than 4 primary partitions, preparation for modern OS (Windows 11, Linux with UEFI), resolving "Windows cannot be installed to this disk" errors during clean install. Reverse GPT → MBR conversion is needed for compatibility with old motherboards lacking UEFI, running legacy OS (Windows 7 in Legacy mode), or hardware supporting only MBR (some old RAID controllers, medical devices). If after self-conversion attempt the system fails to boot, shows "No bootable device" or "Operating system not found" – professional help is required. In Khmelnytskyi Grade recommends contacting us before any conversion to avoid data loss, bootloader damage, or full Windows reinstall necessity.

Work Stages

  • Diagnostics: partition style check (MBR/GPT), capacity, structure, bootloader, BIOS/UEFI compatibility.
  • Backup: save BCD, EFI partition, critical data to external media.
  • Preparation: disable Secure Boot (if needed), switch to Legacy/UEFI mode, verify AHCI.
  • Conversion: safe MBR → GPT or GPT → MBR change with data-preserving tools.
  • Boot repair: update BCD, create/move EFI partition, bootrec /rebuildbcd repair.
  • Verification & optimization: chkdsk, partition alignment, TRIM activation (SSD), speed & stability test.
  • BIOS setup: enable UEFI/Secure Boot, select boot drive, disable CSM.
  • Final testing: system boot, all partition check, load monitoring.

Conversion is performed with minimal data risk, using backup and step-by-step verification.

Why Choose Grade in Khmelnytskyi

Grade in Khmelnytskyi performs MBR/GPT conversion on any system – from old PCs with Windows 7 to modern gaming rigs with Windows 11 and UEFI. We use proven tools (Microsoft mbr2gpt, MiniTool, AOMEI), understand bootloader specifics on Intel/AMD platforms, Secure Boot nuances, NVMe compatibility across BIOS versions. Clients receive a working system without Windows reinstall, full disk capacity, and UEFI support. Read reviews. We also perform PC repair, laptop repair, and software installation. Open Mon–Sun 11:00–20:00 at Panasa Myrnoho St, 31/3, Khmelnytskyi. Contact via +380 97 719 4430 or Telegram. We combine with TV repair and coffee machine repair. Grade delivers safe MBR/GPT conversion in Khmelnytskyi.

Easy from Anywhere in Ukraine

Not in Khmelnytskyi? Ship your computer or laptop via Nova Poshta – we’ll perform MBR/GPT conversion without data loss and return the device. Details on the page. Convenient for clients from Sumy, Kyiv, Dnipro, Lviv, Odesa. Secure packaging, insurance, full post-work testing included. We also accept remote phone repair, charging station repair, and robot vacuum repair with delivery.

Call Master:

+380 97 719 4430

Need help right now?

Leave a request — we will contact you quickly, clarify the details and offer the best repair or optimization option.

We work with most common PC and laptop models, helping with both basic and complex software issues. You can also use remote diagnostics or Shipping via Nova Poshta (safe packaging and insurance) — it’s convenient and fast.