When it comes to mass storage and the Atari, HDDRIVER is the first choice. HDDRIVER supports all relevant standards and therefore offers maximum compatibility. Be it TOS, MiNT or MagiC, be it ACSI, SCSI, IDE, ATAPI, SATA or USB (the latter with third-party modules), be it MBR or GPT partitions: HDDRIVER is the ideal driver, also for modern SCSI hardware such as SCSI2Pi or BlueSCSI. For Atari emulators HDDRIVER even offers special functions. The software automatically detects properties of TOS versions and devices and adapts intelligently to them. Make the most of your Atari's capabilities, not only in terms of drive capacities, number of partitions or partition sizes!
The HDDRIVER software package offers much more than just a driver. It includes maintenance tools with a user-friendly interface. Formatting, partitioning, copying, erasing, configuring, testing, performance tuning and much more - no problem! There are also numerous add-ons and third-party programs, all of which benefit from HDDRIVER.

In addition to hard drives, DOMs and SSDs, HDDRIVER supports removable media drives such as Syquest, ZIP, JAZ, MODs, DVD+RW, DVD-RAM, GigaFile or UltraSatan and memory cards. USB devices are supported by third-party HDDRIVER modules.
On the part of HDDRIVER there is no upper limit for the capacity of mass storage devices. With the ACSI bus, using more than 1 GiB of capacity requires an ICD compatible host adapter or an ICD compatible device such as GigaFile, UltraSatan or SCSI2Pi. TOS, MagiC and MiNT limit the usable capacity to 2 TiB (2048 GiB). Tools like HDDRUTIL or DISKUS support 64 bit sector numbers and can therefore access even larger media.
Rewritable optical media (DVD-RAM, DVD+RW, BD-RE) can be used for storing data on a normal TOS filesystem. Simply use your old PC's DVD burner as a backup drive for your Atari data!

With HDDRIVER it is child's play to exchange data using removable media/memory cards, without additional software or inconvenient cable connections. In combination with MagiC or MiNT this even works with long filenames and very big partitions (FAT32). Furthermore with MiNT and HDDRIVER you can access Linux partitions (ext2). HDDRIVER detects both the legacy MBR (Master Boot Record) and the modern UEFI GUID Partition Table (GPT) partition scheme.

HDDRIVER is entirely coded in assembler and therefore fast and compact. ACSI and IDE/SATA devices profit from settings for extra fast data transfers. Owners of a Thunder IDE interface can boot HDDRIVER into TT-RAM, which considerably boosts the IDE transfer rate and saves precious ST-RAM. Optional blitter support can also result in a higher IDE throughput, especially with STs. With the multitasking operating system MagiC SCSI and ACSI transfers can run in the background.

AUTO folder programs like FOLDRxxx, CACHExxx, JARxxx or SCSIDRV are obsolete, which speeds up booting and keeps the AUTO folder clean. The functionality of these programs is included in HDDRIVER. Because HDDRIVER can execute the AUTO folder and accessories from any partition by pressing a key, a boot selector is often unnecessary.

For HDDRIVER data security plays an important role. The data transferred are optionally verified in order to detect errors when writing data. Selected partitions can be write-protected, which is a good protection against accidental changes. Important areas of a drive (root sector and boot sectors) can separately be protected against unintentional changes. If a device supports a self-test, it can be triggered by simply a mouse-click.

HDDRIVER is more than just a driver. A set of sophisticated tools with a graphical user interface completes the distribution. Media can be formatted, devices can be configured, and self-tests can be executed. Drives can be parked (automatically) and media ejected, the read/write protection of ZIP/JAZ drives can be configured. Storage media can completely or partially be copied, e.g. in order to create backups or to exchange data. With many optical drives storing data on DVD-RAM, DVD+RW and BD-RE media with TOS filesystems is supported. Complete media or single partitions can be saved as image files or loaded from image files, and much more.
An accessory and CPX modules allow to conveniently manage numerous settings, without you having to be a hard drive wizard.

HDDRIVER supports the SCSI Driver interface for a unified access to peripherals. This open software interface is not limited to SCSI devices and is used by a range of other drivers and applications. Optical SATA drives innately use SCSI commands anyway, for IDE and SATA hard drives HDDRIVER emulates them. This means that any application can access IDE, ATAPI and SATA drives as if they were SCSI devices. HDDRIVER's SCSI Driver supports 64 bit sector numbers, so that drives > 2 TiB (2048 GiB) can be addressed with their full capacity. Furthermore HDDRIVER supports the latest XHDI standard 1.30.

With MagiC or MiNT and HDDRIVER up to 31 drives and big partitions can be managed. Single partitions can be mapped to the drives A: and B:.
Features like SCSI initiator identification and bus arbitration (for a maximum of compatibility with the SCSI standard) can be taken for granted with HDDRIVER.

In contrast to other drivers HDDRIVER is actively maintained. The scope of delivery includes a detailed manual as PDF. Users get support by the FAQ, by email or in the HDDRIVER forum. With the Hddriver News app for Android you stay up to date.